/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/locks/test_locks_12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:43:13,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:43:13,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:43:13,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:43:13,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:43:13,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:43:13,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:43:13,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:43:13,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:43:13,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:43:13,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:43:13,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:43:13,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:43:13,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:43:13,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:43:13,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:43:13,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:43:13,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:43:13,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:43:13,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:43:13,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:43:13,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:43:13,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:43:13,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:43:13,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:43:13,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:43:13,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:43:13,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:43:13,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:43:13,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:43:13,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:43:13,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:43:13,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:43:13,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:43:13,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:43:13,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:43:13,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:43:13,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:43:13,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:43:13,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:43:13,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:43:13,342 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 [2020-10-14 23:43:13,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:43:13,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:43:13,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:43:13,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:43:13,366 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:43:13,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:43:13,367 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:43:13,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:43:13,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:43:13,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:43:13,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:43:13,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:43:13,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:43:13,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:43:13,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:43:13,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:43:13,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:43:13,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:43:13,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:43:13,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:43:13,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:43:13,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:43:13,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:43:13,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:43:13,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:43:13,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:43:13,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:43:13,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:43:13,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:43:13,371 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:43:13,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:43:13,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:43:13,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:43:13,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:43:13,709 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:43:13,710 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_12.c [2020-10-14 23:43:13,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f34145077/4267acefc36742758099f57d13777c0a/FLAGb1f5765ab [2020-10-14 23:43:14,296 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:43:14,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_12.c [2020-10-14 23:43:14,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f34145077/4267acefc36742758099f57d13777c0a/FLAGb1f5765ab [2020-10-14 23:43:14,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f34145077/4267acefc36742758099f57d13777c0a [2020-10-14 23:43:14,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:43:14,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:43:14,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:43:14,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:43:14,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:43:14,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:14" (1/1) ... [2020-10-14 23:43:14,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fa97df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:14, skipping insertion in model container [2020-10-14 23:43:14,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:14" (1/1) ... [2020-10-14 23:43:14,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:43:14,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:43:15,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:43:15,058 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:43:15,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:43:15,098 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:43:15,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:15 WrapperNode [2020-10-14 23:43:15,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:43:15,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:43:15,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:43:15,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:43:15,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:15" (1/1) ... [2020-10-14 23:43:15,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:15" (1/1) ... [2020-10-14 23:43:15,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:15" (1/1) ... [2020-10-14 23:43:15,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:15" (1/1) ... [2020-10-14 23:43:15,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:15" (1/1) ... [2020-10-14 23:43:15,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:15" (1/1) ... [2020-10-14 23:43:15,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:15" (1/1) ... [2020-10-14 23:43:15,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:43:15,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:43:15,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:43:15,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:43:15,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:15" (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 [2020-10-14 23:43:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:43:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:43:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:43:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:43:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:43:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:43:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:43:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:43:15,659 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:43:15,659 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:43:15,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:15 BoogieIcfgContainer [2020-10-14 23:43:15,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:43:15,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:43:15,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:43:15,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:43:15,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:43:14" (1/3) ... [2020-10-14 23:43:15,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dcb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:15, skipping insertion in model container [2020-10-14 23:43:15,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:15" (2/3) ... [2020-10-14 23:43:15,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dcb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:15, skipping insertion in model container [2020-10-14 23:43:15,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:15" (3/3) ... [2020-10-14 23:43:15,675 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2020-10-14 23:43:15,690 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:43:15,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:43:15,743 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:43:15,774 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:43:15,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:43:15,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:43:15,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:43:15,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:43:15,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:43:15,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:43:15,776 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:43:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-14 23:43:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:43:15,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:15,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:15,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:15,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:15,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1339057171, now seen corresponding path program 1 times [2020-10-14 23:43:15,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:15,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129676578] [2020-10-14 23:43:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:16,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:16,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:43:16,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 23:43:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:16,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:43:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 23:43:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:16,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:16,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:43:16,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:16,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:16,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:16,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129676578] [2020-10-14 23:43:16,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:16,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:16,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143447020] [2020-10-14 23:43:16,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:16,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:16,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:16,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:16,421 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-10-14 23:43:16,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:16,484 INFO L93 Difference]: Finished difference Result 99 states and 174 transitions. [2020-10-14 23:43:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:16,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 23:43:16,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:16,501 INFO L225 Difference]: With dead ends: 99 [2020-10-14 23:43:16,501 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 23:43:16,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 23:43:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 58. [2020-10-14 23:43:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 23:43:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 105 transitions. [2020-10-14 23:43:16,559 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 105 transitions. Word has length 22 [2020-10-14 23:43:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:16,560 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 105 transitions. [2020-10-14 23:43:16,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 105 transitions. [2020-10-14 23:43:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:43:16,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:16,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:16,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:43:16,562 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:16,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1676046447, now seen corresponding path program 1 times [2020-10-14 23:43:16,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:16,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049777042] [2020-10-14 23:43:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:16,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:16,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:16,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:43:16,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 23:43:16,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:16,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:43:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:16,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:16,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:16,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:16,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:16,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:16,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:43:16,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:16,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:43:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:16,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049777042] [2020-10-14 23:43:16,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:16,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:16,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678262335] [2020-10-14 23:43:16,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:16,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:16,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:16,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:16,712 INFO L87 Difference]: Start difference. First operand 58 states and 105 transitions. Second operand 3 states. [2020-10-14 23:43:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:16,771 INFO L93 Difference]: Finished difference Result 137 states and 252 transitions. [2020-10-14 23:43:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:16,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 23:43:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:16,775 INFO L225 Difference]: With dead ends: 137 [2020-10-14 23:43:16,775 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 23:43:16,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 23:43:16,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-14 23:43:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 23:43:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 149 transitions. [2020-10-14 23:43:16,791 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 149 transitions. Word has length 22 [2020-10-14 23:43:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:16,792 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 149 transitions. [2020-10-14 23:43:16,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 149 transitions. [2020-10-14 23:43:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:43:16,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:16,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:16,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:43:16,794 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:16,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1439113391, now seen corresponding path program 1 times [2020-10-14 23:43:16,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:16,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912682271] [2020-10-14 23:43:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:16,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:16,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:43:16,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 23:43:16,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:16,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:43:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:16,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:16,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:16,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:16,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:43:16,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:16,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:16,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912682271] [2020-10-14 23:43:16,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:16,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:16,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487952795] [2020-10-14 23:43:16,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:16,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:16,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:16,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:16,984 INFO L87 Difference]: Start difference. First operand 82 states and 149 transitions. Second operand 3 states. [2020-10-14 23:43:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:17,034 INFO L93 Difference]: Finished difference Result 126 states and 225 transitions. [2020-10-14 23:43:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:17,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 23:43:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:17,037 INFO L225 Difference]: With dead ends: 126 [2020-10-14 23:43:17,037 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 23:43:17,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 23:43:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-14 23:43:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 23:43:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 151 transitions. [2020-10-14 23:43:17,051 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 151 transitions. Word has length 23 [2020-10-14 23:43:17,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:17,052 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 151 transitions. [2020-10-14 23:43:17,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 151 transitions. [2020-10-14 23:43:17,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:43:17,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:17,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:17,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:43:17,054 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:17,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:17,055 INFO L82 PathProgramCache]: Analyzing trace with hash 418045037, now seen corresponding path program 1 times [2020-10-14 23:43:17,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:17,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067257634] [2020-10-14 23:43:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:43:17,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 23:43:17,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:43:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:17,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:17,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:17,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:17,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067257634] [2020-10-14 23:43:17,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:17,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:17,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518632711] [2020-10-14 23:43:17,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:17,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:17,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:17,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,142 INFO L87 Difference]: Start difference. First operand 85 states and 151 transitions. Second operand 3 states. [2020-10-14 23:43:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:17,166 INFO L93 Difference]: Finished difference Result 160 states and 288 transitions. [2020-10-14 23:43:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:17,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 23:43:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:17,169 INFO L225 Difference]: With dead ends: 160 [2020-10-14 23:43:17,169 INFO L226 Difference]: Without dead ends: 158 [2020-10-14 23:43:17,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-14 23:43:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 112. [2020-10-14 23:43:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 23:43:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 200 transitions. [2020-10-14 23:43:17,182 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 200 transitions. Word has length 23 [2020-10-14 23:43:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:17,182 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 200 transitions. [2020-10-14 23:43:17,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:17,182 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 200 transitions. [2020-10-14 23:43:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:43:17,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:17,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:17,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:43:17,184 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:17,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:17,185 INFO L82 PathProgramCache]: Analyzing trace with hash -861818641, now seen corresponding path program 1 times [2020-10-14 23:43:17,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:17,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095566651] [2020-10-14 23:43:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:43:17,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:43:17,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:43:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:17,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:17,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:17,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:17,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095566651] [2020-10-14 23:43:17,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:17,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:17,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946843854] [2020-10-14 23:43:17,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:17,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:17,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:17,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,259 INFO L87 Difference]: Start difference. First operand 112 states and 200 transitions. Second operand 3 states. [2020-10-14 23:43:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:17,278 INFO L93 Difference]: Finished difference Result 264 states and 478 transitions. [2020-10-14 23:43:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:17,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 23:43:17,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:17,280 INFO L225 Difference]: With dead ends: 264 [2020-10-14 23:43:17,281 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 23:43:17,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 23:43:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-10-14 23:43:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 23:43:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 282 transitions. [2020-10-14 23:43:17,296 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 282 transitions. Word has length 23 [2020-10-14 23:43:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:17,296 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 282 transitions. [2020-10-14 23:43:17,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 282 transitions. [2020-10-14 23:43:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:43:17,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:17,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:17,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:43:17,299 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:17,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:17,299 INFO L82 PathProgramCache]: Analyzing trace with hash 74707332, now seen corresponding path program 1 times [2020-10-14 23:43:17,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:17,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644744602] [2020-10-14 23:43:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:43:17,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 23:43:17,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:43:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:17,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:17,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:17,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:17,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644744602] [2020-10-14 23:43:17,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:17,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:17,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42456967] [2020-10-14 23:43:17,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:17,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:17,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:17,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,403 INFO L87 Difference]: Start difference. First operand 158 states and 282 transitions. Second operand 3 states. [2020-10-14 23:43:17,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:17,422 INFO L93 Difference]: Finished difference Result 298 states and 538 transitions. [2020-10-14 23:43:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:17,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 23:43:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:17,425 INFO L225 Difference]: With dead ends: 298 [2020-10-14 23:43:17,425 INFO L226 Difference]: Without dead ends: 296 [2020-10-14 23:43:17,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-14 23:43:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 214. [2020-10-14 23:43:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-14 23:43:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 380 transitions. [2020-10-14 23:43:17,440 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 380 transitions. Word has length 24 [2020-10-14 23:43:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:17,440 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 380 transitions. [2020-10-14 23:43:17,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 380 transitions. [2020-10-14 23:43:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:43:17,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:17,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:17,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:43:17,443 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:17,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1205156346, now seen corresponding path program 1 times [2020-10-14 23:43:17,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:17,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507415724] [2020-10-14 23:43:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:43:17,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:17,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 23:43:17,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:43:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:17,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:17,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:17,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507415724] [2020-10-14 23:43:17,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:17,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:17,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901961832] [2020-10-14 23:43:17,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:17,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:17,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:17,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,550 INFO L87 Difference]: Start difference. First operand 214 states and 380 transitions. Second operand 3 states. [2020-10-14 23:43:17,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:17,573 INFO L93 Difference]: Finished difference Result 510 states and 914 transitions. [2020-10-14 23:43:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:17,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 23:43:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:17,576 INFO L225 Difference]: With dead ends: 510 [2020-10-14 23:43:17,576 INFO L226 Difference]: Without dead ends: 304 [2020-10-14 23:43:17,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-14 23:43:17,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2020-10-14 23:43:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-14 23:43:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 534 transitions. [2020-10-14 23:43:17,594 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 534 transitions. Word has length 24 [2020-10-14 23:43:17,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:17,594 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 534 transitions. [2020-10-14 23:43:17,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:17,594 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 534 transitions. [2020-10-14 23:43:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:43:17,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:17,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:17,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:43:17,597 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:17,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:17,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1978826590, now seen corresponding path program 1 times [2020-10-14 23:43:17,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:17,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589532021] [2020-10-14 23:43:17,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:43:17,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:17,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 23:43:17,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:17,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:43:17,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:17,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:17,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:17,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:17,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589532021] [2020-10-14 23:43:17,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:17,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:17,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639082241] [2020-10-14 23:43:17,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:17,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:17,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:17,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,777 INFO L87 Difference]: Start difference. First operand 302 states and 534 transitions. Second operand 3 states. [2020-10-14 23:43:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:17,798 INFO L93 Difference]: Finished difference Result 456 states and 804 transitions. [2020-10-14 23:43:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:17,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 23:43:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:17,801 INFO L225 Difference]: With dead ends: 456 [2020-10-14 23:43:17,801 INFO L226 Difference]: Without dead ends: 310 [2020-10-14 23:43:17,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-14 23:43:17,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2020-10-14 23:43:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-14 23:43:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 538 transitions. [2020-10-14 23:43:17,815 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 538 transitions. Word has length 25 [2020-10-14 23:43:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:17,816 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 538 transitions. [2020-10-14 23:43:17,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:17,816 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 538 transitions. [2020-10-14 23:43:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:43:17,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:17,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:17,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:43:17,818 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:17,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:17,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1295072352, now seen corresponding path program 1 times [2020-10-14 23:43:17,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:17,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256937394] [2020-10-14 23:43:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:43:17,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:17,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 23:43:17,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:43:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:17,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:17,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:43:17,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:17,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256937394] [2020-10-14 23:43:17,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:17,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:17,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779391238] [2020-10-14 23:43:17,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:17,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:17,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:17,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,910 INFO L87 Difference]: Start difference. First operand 308 states and 538 transitions. Second operand 3 states. [2020-10-14 23:43:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:17,934 INFO L93 Difference]: Finished difference Result 572 states and 1012 transitions. [2020-10-14 23:43:17,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:17,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 23:43:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:17,938 INFO L225 Difference]: With dead ends: 572 [2020-10-14 23:43:17,938 INFO L226 Difference]: Without dead ends: 570 [2020-10-14 23:43:17,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-10-14 23:43:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 424. [2020-10-14 23:43:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-14 23:43:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 730 transitions. [2020-10-14 23:43:17,954 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 730 transitions. Word has length 25 [2020-10-14 23:43:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:17,954 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 730 transitions. [2020-10-14 23:43:17,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 730 transitions. [2020-10-14 23:43:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:43:17,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:17,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:17,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:43:17,956 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:17,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:17,957 INFO L82 PathProgramCache]: Analyzing trace with hash 15208674, now seen corresponding path program 1 times [2020-10-14 23:43:17,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:17,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163974776] [2020-10-14 23:43:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:43:18,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 23:43:18,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:43:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:18,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:18,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:18,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163974776] [2020-10-14 23:43:18,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:18,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:18,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082140866] [2020-10-14 23:43:18,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:18,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:18,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:18,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,035 INFO L87 Difference]: Start difference. First operand 424 states and 730 transitions. Second operand 3 states. [2020-10-14 23:43:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:18,059 INFO L93 Difference]: Finished difference Result 1004 states and 1740 transitions. [2020-10-14 23:43:18,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:18,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 23:43:18,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:18,063 INFO L225 Difference]: With dead ends: 1004 [2020-10-14 23:43:18,063 INFO L226 Difference]: Without dead ends: 594 [2020-10-14 23:43:18,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-14 23:43:18,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 592. [2020-10-14 23:43:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-14 23:43:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1014 transitions. [2020-10-14 23:43:18,083 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1014 transitions. Word has length 25 [2020-10-14 23:43:18,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:18,083 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 1014 transitions. [2020-10-14 23:43:18,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1014 transitions. [2020-10-14 23:43:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:43:18,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:18,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:18,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:43:18,086 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:18,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1492751003, now seen corresponding path program 1 times [2020-10-14 23:43:18,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:18,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777723904] [2020-10-14 23:43:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:43:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 23:43:18,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:43:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:18,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:18,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:18,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:18,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:18,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777723904] [2020-10-14 23:43:18,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:18,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:18,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269352046] [2020-10-14 23:43:18,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:18,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:18,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:18,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,232 INFO L87 Difference]: Start difference. First operand 592 states and 1014 transitions. Second operand 3 states. [2020-10-14 23:43:18,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:18,281 INFO L93 Difference]: Finished difference Result 888 states and 1516 transitions. [2020-10-14 23:43:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:18,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:43:18,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:18,285 INFO L225 Difference]: With dead ends: 888 [2020-10-14 23:43:18,285 INFO L226 Difference]: Without dead ends: 602 [2020-10-14 23:43:18,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-10-14 23:43:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-10-14 23:43:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-14 23:43:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1014 transitions. [2020-10-14 23:43:18,303 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1014 transitions. Word has length 26 [2020-10-14 23:43:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:18,304 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 1014 transitions. [2020-10-14 23:43:18,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1014 transitions. [2020-10-14 23:43:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:43:18,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:18,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:18,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:43:18,306 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:18,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:18,306 INFO L82 PathProgramCache]: Analyzing trace with hash 471682649, now seen corresponding path program 1 times [2020-10-14 23:43:18,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:18,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957243355] [2020-10-14 23:43:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:43:18,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 23:43:18,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:43:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:18,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:18,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:18,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:18,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957243355] [2020-10-14 23:43:18,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:18,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:18,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815851874] [2020-10-14 23:43:18,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:18,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:18,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:18,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,393 INFO L87 Difference]: Start difference. First operand 600 states and 1014 transitions. Second operand 3 states. [2020-10-14 23:43:18,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:18,419 INFO L93 Difference]: Finished difference Result 1100 states and 1888 transitions. [2020-10-14 23:43:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:18,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:43:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:18,429 INFO L225 Difference]: With dead ends: 1100 [2020-10-14 23:43:18,429 INFO L226 Difference]: Without dead ends: 1098 [2020-10-14 23:43:18,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2020-10-14 23:43:18,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 840. [2020-10-14 23:43:18,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-10-14 23:43:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1390 transitions. [2020-10-14 23:43:18,463 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1390 transitions. Word has length 26 [2020-10-14 23:43:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:18,463 INFO L479 AbstractCegarLoop]: Abstraction has 840 states and 1390 transitions. [2020-10-14 23:43:18,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1390 transitions. [2020-10-14 23:43:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:43:18,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:18,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:18,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:43:18,467 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:18,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:18,467 INFO L82 PathProgramCache]: Analyzing trace with hash -808181029, now seen corresponding path program 1 times [2020-10-14 23:43:18,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:18,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915366290] [2020-10-14 23:43:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:43:18,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 23:43:18,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:43:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:18,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:18,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:18,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:18,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:18,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:18,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:18,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915366290] [2020-10-14 23:43:18,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:18,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:18,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137535101] [2020-10-14 23:43:18,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:18,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:18,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:18,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,570 INFO L87 Difference]: Start difference. First operand 840 states and 1390 transitions. Second operand 3 states. [2020-10-14 23:43:18,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:18,611 INFO L93 Difference]: Finished difference Result 1980 states and 3296 transitions. [2020-10-14 23:43:18,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:18,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:43:18,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:18,621 INFO L225 Difference]: With dead ends: 1980 [2020-10-14 23:43:18,621 INFO L226 Difference]: Without dead ends: 1162 [2020-10-14 23:43:18,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-10-14 23:43:18,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1160. [2020-10-14 23:43:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2020-10-14 23:43:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1910 transitions. [2020-10-14 23:43:18,666 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1910 transitions. Word has length 26 [2020-10-14 23:43:18,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:18,667 INFO L479 AbstractCegarLoop]: Abstraction has 1160 states and 1910 transitions. [2020-10-14 23:43:18,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:18,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1910 transitions. [2020-10-14 23:43:18,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:43:18,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:18,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:18,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:43:18,671 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:18,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:18,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1737474327, now seen corresponding path program 1 times [2020-10-14 23:43:18,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:18,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166502573] [2020-10-14 23:43:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:43:18,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 23:43:18,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:43:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:18,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:18,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:18,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:18,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166502573] [2020-10-14 23:43:18,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:18,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:18,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080594976] [2020-10-14 23:43:18,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:18,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:18,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:18,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,809 INFO L87 Difference]: Start difference. First operand 1160 states and 1910 transitions. Second operand 3 states. [2020-10-14 23:43:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:18,841 INFO L93 Difference]: Finished difference Result 1740 states and 2856 transitions. [2020-10-14 23:43:18,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:18,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:43:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:18,849 INFO L225 Difference]: With dead ends: 1740 [2020-10-14 23:43:18,849 INFO L226 Difference]: Without dead ends: 1178 [2020-10-14 23:43:18,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2020-10-14 23:43:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1176. [2020-10-14 23:43:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2020-10-14 23:43:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1910 transitions. [2020-10-14 23:43:18,901 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1910 transitions. Word has length 27 [2020-10-14 23:43:18,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:18,901 INFO L479 AbstractCegarLoop]: Abstraction has 1176 states and 1910 transitions. [2020-10-14 23:43:18,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:18,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1910 transitions. [2020-10-14 23:43:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:43:18,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:18,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:18,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:43:18,904 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:18,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:18,904 INFO L82 PathProgramCache]: Analyzing trace with hash 716405973, now seen corresponding path program 1 times [2020-10-14 23:43:18,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:18,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763606958] [2020-10-14 23:43:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:43:18,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 23:43:18,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:43:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:18,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:18,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:18,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:18,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:18,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:18,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:18,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763606958] [2020-10-14 23:43:18,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:18,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:18,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846330539] [2020-10-14 23:43:18,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:18,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:18,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:18,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:18,984 INFO L87 Difference]: Start difference. First operand 1176 states and 1910 transitions. Second operand 3 states. [2020-10-14 23:43:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:19,012 INFO L93 Difference]: Finished difference Result 1740 states and 2808 transitions. [2020-10-14 23:43:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:19,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:43:19,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:19,020 INFO L225 Difference]: With dead ends: 1740 [2020-10-14 23:43:19,021 INFO L226 Difference]: Without dead ends: 1178 [2020-10-14 23:43:19,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:19,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2020-10-14 23:43:19,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1176. [2020-10-14 23:43:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2020-10-14 23:43:19,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1878 transitions. [2020-10-14 23:43:19,058 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1878 transitions. Word has length 27 [2020-10-14 23:43:19,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:19,058 INFO L479 AbstractCegarLoop]: Abstraction has 1176 states and 1878 transitions. [2020-10-14 23:43:19,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1878 transitions. [2020-10-14 23:43:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:43:19,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:19,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:19,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:43:19,061 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:19,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:19,062 INFO L82 PathProgramCache]: Analyzing trace with hash -972537769, now seen corresponding path program 1 times [2020-10-14 23:43:19,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:19,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852948844] [2020-10-14 23:43:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:19,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:19,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:43:19,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:43:19,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:19,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:43:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:19,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:19,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:19,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:19,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:19,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:19,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:19,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:19,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:19,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852948844] [2020-10-14 23:43:19,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:19,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:19,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572963687] [2020-10-14 23:43:19,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:19,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:19,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:19,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:19,119 INFO L87 Difference]: Start difference. First operand 1176 states and 1878 transitions. Second operand 3 states. [2020-10-14 23:43:19,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:19,153 INFO L93 Difference]: Finished difference Result 2124 states and 3464 transitions. [2020-10-14 23:43:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:19,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:43:19,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:19,165 INFO L225 Difference]: With dead ends: 2124 [2020-10-14 23:43:19,165 INFO L226 Difference]: Without dead ends: 2122 [2020-10-14 23:43:19,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:19,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2020-10-14 23:43:19,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1672. [2020-10-14 23:43:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1672 states. [2020-10-14 23:43:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2598 transitions. [2020-10-14 23:43:19,217 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2598 transitions. Word has length 27 [2020-10-14 23:43:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:19,218 INFO L479 AbstractCegarLoop]: Abstraction has 1672 states and 2598 transitions. [2020-10-14 23:43:19,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2598 transitions. [2020-10-14 23:43:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:43:19,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:19,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:19,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:43:19,221 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:19,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:19,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2042565849, now seen corresponding path program 1 times [2020-10-14 23:43:19,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:19,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325472080] [2020-10-14 23:43:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:19,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:19,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:19,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:43:19,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:19,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:43:19,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:19,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:43:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:19,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:19,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:19,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:19,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:19,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:19,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:19,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325472080] [2020-10-14 23:43:19,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:19,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:19,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140031596] [2020-10-14 23:43:19,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:19,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:19,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:19,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:19,280 INFO L87 Difference]: Start difference. First operand 1672 states and 2598 transitions. Second operand 3 states. [2020-10-14 23:43:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:19,334 INFO L93 Difference]: Finished difference Result 3916 states and 6120 transitions. [2020-10-14 23:43:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:19,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:43:19,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:19,347 INFO L225 Difference]: With dead ends: 3916 [2020-10-14 23:43:19,348 INFO L226 Difference]: Without dead ends: 2282 [2020-10-14 23:43:19,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-10-14 23:43:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2280. [2020-10-14 23:43:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2020-10-14 23:43:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3526 transitions. [2020-10-14 23:43:19,424 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3526 transitions. Word has length 27 [2020-10-14 23:43:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:19,425 INFO L479 AbstractCegarLoop]: Abstraction has 2280 states and 3526 transitions. [2020-10-14 23:43:19,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3526 transitions. [2020-10-14 23:43:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:43:19,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:19,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:19,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:43:19,430 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:19,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:19,431 INFO L82 PathProgramCache]: Analyzing trace with hash -83685330, now seen corresponding path program 1 times [2020-10-14 23:43:19,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:19,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331169752] [2020-10-14 23:43:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:19,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:19,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:19,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:43:19,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:19,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 23:43:19,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:19,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:19,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:19,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:43:19,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:19,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:19,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:19,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:19,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:19,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:19,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:19,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:43:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:19,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331169752] [2020-10-14 23:43:19,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:19,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:19,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919495898] [2020-10-14 23:43:19,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:19,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:19,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:19,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:19,535 INFO L87 Difference]: Start difference. First operand 2280 states and 3526 transitions. Second operand 3 states. [2020-10-14 23:43:19,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:19,634 INFO L93 Difference]: Finished difference Result 4076 states and 6440 transitions. [2020-10-14 23:43:19,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:19,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 23:43:19,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:19,662 INFO L225 Difference]: With dead ends: 4076 [2020-10-14 23:43:19,662 INFO L226 Difference]: Without dead ends: 4074 [2020-10-14 23:43:19,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2020-10-14 23:43:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 3304. [2020-10-14 23:43:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3304 states. [2020-10-14 23:43:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 4966 transitions. [2020-10-14 23:43:19,780 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 4966 transitions. Word has length 28 [2020-10-14 23:43:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:19,780 INFO L479 AbstractCegarLoop]: Abstraction has 3304 states and 4966 transitions. [2020-10-14 23:43:19,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 4966 transitions. [2020-10-14 23:43:19,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:43:19,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:19,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:19,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:43:19,787 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:19,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1363549008, now seen corresponding path program 1 times [2020-10-14 23:43:19,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:19,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818021562] [2020-10-14 23:43:19,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:19,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:19,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:19,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:43:19,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:19,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 23:43:19,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:19,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:43:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:19,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:19,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:19,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:19,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:19,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:19,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:19,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:19,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:19,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:19,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:19,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818021562] [2020-10-14 23:43:19,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:19,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:19,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952221659] [2020-10-14 23:43:19,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:19,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:19,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:19,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:19,872 INFO L87 Difference]: Start difference. First operand 3304 states and 4966 transitions. Second operand 3 states. [2020-10-14 23:43:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:19,956 INFO L93 Difference]: Finished difference Result 7724 states and 11688 transitions. [2020-10-14 23:43:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:19,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 23:43:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:19,977 INFO L225 Difference]: With dead ends: 7724 [2020-10-14 23:43:19,978 INFO L226 Difference]: Without dead ends: 4458 [2020-10-14 23:43:19,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:19,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2020-10-14 23:43:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 4456. [2020-10-14 23:43:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4456 states. [2020-10-14 23:43:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6662 transitions. [2020-10-14 23:43:20,115 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6662 transitions. Word has length 28 [2020-10-14 23:43:20,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:20,115 INFO L479 AbstractCegarLoop]: Abstraction has 4456 states and 6662 transitions. [2020-10-14 23:43:20,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6662 transitions. [2020-10-14 23:43:20,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:43:20,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:20,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:20,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:43:20,123 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:20,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:20,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1700936844, now seen corresponding path program 1 times [2020-10-14 23:43:20,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:20,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508579897] [2020-10-14 23:43:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:20,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:20,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:20,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:43:20,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:20,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 23:43:20,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:20,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:43:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:20,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:20,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:20,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:20,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:20,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:20,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:20,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:20,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:20,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:20,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508579897] [2020-10-14 23:43:20,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:20,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:20,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668390006] [2020-10-14 23:43:20,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:20,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:20,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:20,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:20,247 INFO L87 Difference]: Start difference. First operand 4456 states and 6662 transitions. Second operand 3 states. [2020-10-14 23:43:20,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:20,361 INFO L93 Difference]: Finished difference Result 6732 states and 10056 transitions. [2020-10-14 23:43:20,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:20,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 23:43:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:20,384 INFO L225 Difference]: With dead ends: 6732 [2020-10-14 23:43:20,385 INFO L226 Difference]: Without dead ends: 4554 [2020-10-14 23:43:20,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2020-10-14 23:43:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 4552. [2020-10-14 23:43:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4552 states. [2020-10-14 23:43:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6726 transitions. [2020-10-14 23:43:20,513 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6726 transitions. Word has length 29 [2020-10-14 23:43:20,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:20,513 INFO L479 AbstractCegarLoop]: Abstraction has 4552 states and 6726 transitions. [2020-10-14 23:43:20,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:20,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6726 transitions. [2020-10-14 23:43:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:43:20,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:20,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:20,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:43:20,520 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:20,521 INFO L82 PathProgramCache]: Analyzing trace with hash 679868490, now seen corresponding path program 1 times [2020-10-14 23:43:20,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:20,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550287786] [2020-10-14 23:43:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:20,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:20,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:43:20,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 23:43:20,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:20,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 23:43:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:20,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:20,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:20,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:20,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:20,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:20,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:20,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:20,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:20,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550287786] [2020-10-14 23:43:20,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:20,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:20,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527463] [2020-10-14 23:43:20,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:20,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:20,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:20,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:20,606 INFO L87 Difference]: Start difference. First operand 4552 states and 6726 transitions. Second operand 3 states. [2020-10-14 23:43:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:20,742 INFO L93 Difference]: Finished difference Result 13260 states and 19400 transitions. [2020-10-14 23:43:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:20,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 23:43:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:20,765 INFO L225 Difference]: With dead ends: 13260 [2020-10-14 23:43:20,766 INFO L226 Difference]: Without dead ends: 8842 [2020-10-14 23:43:20,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2020-10-14 23:43:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 8840. [2020-10-14 23:43:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8840 states. [2020-10-14 23:43:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8840 states to 8840 states and 12678 transitions. [2020-10-14 23:43:21,060 INFO L78 Accepts]: Start accepts. Automaton has 8840 states and 12678 transitions. Word has length 29 [2020-10-14 23:43:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:21,061 INFO L479 AbstractCegarLoop]: Abstraction has 8840 states and 12678 transitions. [2020-10-14 23:43:21,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand 8840 states and 12678 transitions. [2020-10-14 23:43:21,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:43:21,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:21,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:21,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:43:21,071 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:21,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:21,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1959732168, now seen corresponding path program 1 times [2020-10-14 23:43:21,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:21,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582462283] [2020-10-14 23:43:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:21,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:21,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:21,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:21,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:43:21,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:21,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:43:21,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:21,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 23:43:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:21,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:21,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:21,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:21,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:21,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:21,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:21,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:21,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582462283] [2020-10-14 23:43:21,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:21,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:21,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610022578] [2020-10-14 23:43:21,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:21,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:21,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:21,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:21,175 INFO L87 Difference]: Start difference. First operand 8840 states and 12678 transitions. Second operand 3 states. [2020-10-14 23:43:21,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:21,297 INFO L93 Difference]: Finished difference Result 10124 states and 14984 transitions. [2020-10-14 23:43:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:21,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 23:43:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:21,320 INFO L225 Difference]: With dead ends: 10124 [2020-10-14 23:43:21,321 INFO L226 Difference]: Without dead ends: 10122 [2020-10-14 23:43:21,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10122 states. [2020-10-14 23:43:21,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10122 to 8840. [2020-10-14 23:43:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8840 states. [2020-10-14 23:43:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8840 states to 8840 states and 12550 transitions. [2020-10-14 23:43:21,560 INFO L78 Accepts]: Start accepts. Automaton has 8840 states and 12550 transitions. Word has length 29 [2020-10-14 23:43:21,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:21,561 INFO L479 AbstractCegarLoop]: Abstraction has 8840 states and 12550 transitions. [2020-10-14 23:43:21,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:21,561 INFO L276 IsEmpty]: Start isEmpty. Operand 8840 states and 12550 transitions. [2020-10-14 23:43:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:43:21,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:21,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:21,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:43:21,573 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:21,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:21,574 INFO L82 PathProgramCache]: Analyzing trace with hash -398698171, now seen corresponding path program 1 times [2020-10-14 23:43:21,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:21,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224235939] [2020-10-14 23:43:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:21,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:21,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:21,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:21,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:43:21,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:21,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 23:43:21,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:21,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:43:21,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:21,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:21,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:21,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:21,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:21,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:21,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:21,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:21,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224235939] [2020-10-14 23:43:21,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:21,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:21,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998291035] [2020-10-14 23:43:21,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:21,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:21,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:21,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:21,747 INFO L87 Difference]: Start difference. First operand 8840 states and 12550 transitions. Second operand 3 states. [2020-10-14 23:43:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:21,854 INFO L93 Difference]: Finished difference Result 13132 states and 18504 transitions. [2020-10-14 23:43:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:21,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:43:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:21,874 INFO L225 Difference]: With dead ends: 13132 [2020-10-14 23:43:21,874 INFO L226 Difference]: Without dead ends: 8842 [2020-10-14 23:43:21,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2020-10-14 23:43:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 8840. [2020-10-14 23:43:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8840 states. [2020-10-14 23:43:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8840 states to 8840 states and 12294 transitions. [2020-10-14 23:43:22,089 INFO L78 Accepts]: Start accepts. Automaton has 8840 states and 12294 transitions. Word has length 30 [2020-10-14 23:43:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:22,090 INFO L479 AbstractCegarLoop]: Abstraction has 8840 states and 12294 transitions. [2020-10-14 23:43:22,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 8840 states and 12294 transitions. [2020-10-14 23:43:22,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:43:22,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:22,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:22,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:43:22,102 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:22,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1902124419, now seen corresponding path program 1 times [2020-10-14 23:43:22,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:22,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158010948] [2020-10-14 23:43:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:22,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:22,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:22,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:43:22,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:43:22,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:22,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:43:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:22,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:22,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:22,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:22,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:22,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:43:22,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:22,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:22,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:22,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158010948] [2020-10-14 23:43:22,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:22,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:22,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941421437] [2020-10-14 23:43:22,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:22,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:22,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:22,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:22,152 INFO L87 Difference]: Start difference. First operand 8840 states and 12294 transitions. Second operand 3 states. [2020-10-14 23:43:22,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:22,306 INFO L93 Difference]: Finished difference Result 15244 states and 21640 transitions. [2020-10-14 23:43:22,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:22,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:43:22,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:22,340 INFO L225 Difference]: With dead ends: 15244 [2020-10-14 23:43:22,340 INFO L226 Difference]: Without dead ends: 15242 [2020-10-14 23:43:22,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15242 states. [2020-10-14 23:43:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15242 to 13192. [2020-10-14 23:43:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13192 states. [2020-10-14 23:43:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13192 states to 13192 states and 17798 transitions. [2020-10-14 23:43:22,707 INFO L78 Accepts]: Start accepts. Automaton has 13192 states and 17798 transitions. Word has length 30 [2020-10-14 23:43:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:22,708 INFO L479 AbstractCegarLoop]: Abstraction has 13192 states and 17798 transitions. [2020-10-14 23:43:22,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 13192 states and 17798 transitions. [2020-10-14 23:43:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:43:22,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:22,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:22,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:43:22,728 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:22,728 INFO L82 PathProgramCache]: Analyzing trace with hash 622260741, now seen corresponding path program 1 times [2020-10-14 23:43:22,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:22,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295850255] [2020-10-14 23:43:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:22,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:22,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:43:22,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:43:22,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:22,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:43:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:22,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:22,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:22,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:22,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:22,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:22,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:22,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:22,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:22,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295850255] [2020-10-14 23:43:22,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:22,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:22,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116185022] [2020-10-14 23:43:22,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:22,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:22,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:22,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:22,780 INFO L87 Difference]: Start difference. First operand 13192 states and 17798 transitions. Second operand 3 states. [2020-10-14 23:43:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:22,980 INFO L93 Difference]: Finished difference Result 30348 states and 41096 transitions. [2020-10-14 23:43:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:22,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:43:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:23,024 INFO L225 Difference]: With dead ends: 30348 [2020-10-14 23:43:23,025 INFO L226 Difference]: Without dead ends: 17290 [2020-10-14 23:43:23,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17290 states. [2020-10-14 23:43:23,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17290 to 17288. [2020-10-14 23:43:23,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17288 states. [2020-10-14 23:43:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17288 states to 17288 states and 23046 transitions. [2020-10-14 23:43:23,901 INFO L78 Accepts]: Start accepts. Automaton has 17288 states and 23046 transitions. Word has length 30 [2020-10-14 23:43:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:23,901 INFO L479 AbstractCegarLoop]: Abstraction has 17288 states and 23046 transitions. [2020-10-14 23:43:23,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 17288 states and 23046 transitions. [2020-10-14 23:43:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:43:23,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:23,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:23,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:43:23,922 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:23,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1163469695, now seen corresponding path program 1 times [2020-10-14 23:43:23,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:23,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133923733] [2020-10-14 23:43:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:23,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:23,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:43:23,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:43:23,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:23,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:43:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:23,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:23,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:23,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:23,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:23,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:23,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:23,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:23,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:23,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133923733] [2020-10-14 23:43:23,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:23,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:23,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633520805] [2020-10-14 23:43:23,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:23,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:23,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:23,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:23,994 INFO L87 Difference]: Start difference. First operand 17288 states and 23046 transitions. Second operand 3 states. [2020-10-14 23:43:24,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:24,268 INFO L93 Difference]: Finished difference Result 29324 states and 39688 transitions. [2020-10-14 23:43:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:24,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 23:43:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:24,334 INFO L225 Difference]: With dead ends: 29324 [2020-10-14 23:43:24,335 INFO L226 Difference]: Without dead ends: 29322 [2020-10-14 23:43:24,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29322 states. [2020-10-14 23:43:24,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29322 to 26248. [2020-10-14 23:43:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26248 states. [2020-10-14 23:43:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26248 states to 26248 states and 34054 transitions. [2020-10-14 23:43:24,934 INFO L78 Accepts]: Start accepts. Automaton has 26248 states and 34054 transitions. Word has length 31 [2020-10-14 23:43:24,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:24,934 INFO L479 AbstractCegarLoop]: Abstraction has 26248 states and 34054 transitions. [2020-10-14 23:43:24,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 26248 states and 34054 transitions. [2020-10-14 23:43:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:43:24,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:24,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:24,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:43:24,985 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:24,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:24,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1851633923, now seen corresponding path program 1 times [2020-10-14 23:43:24,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:24,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871119356] [2020-10-14 23:43:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:25,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:25,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:25,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:43:25,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:25,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:43:25,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:25,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:43:25,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:25,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:25,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:25,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:25,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:25,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:25,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:25,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:25,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:25,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:25,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:25,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:25,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:43:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:25,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871119356] [2020-10-14 23:43:25,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:25,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:25,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981958459] [2020-10-14 23:43:25,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:25,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:25,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:25,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:25,067 INFO L87 Difference]: Start difference. First operand 26248 states and 34054 transitions. Second operand 3 states. [2020-10-14 23:43:25,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:25,737 INFO L93 Difference]: Finished difference Result 60044 states and 78088 transitions. [2020-10-14 23:43:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:25,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 23:43:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:25,820 INFO L225 Difference]: With dead ends: 60044 [2020-10-14 23:43:25,820 INFO L226 Difference]: Without dead ends: 33930 [2020-10-14 23:43:25,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:25,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33930 states. [2020-10-14 23:43:26,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33930 to 33928. [2020-10-14 23:43:26,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33928 states. [2020-10-14 23:43:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33928 states to 33928 states and 43270 transitions. [2020-10-14 23:43:26,491 INFO L78 Accepts]: Start accepts. Automaton has 33928 states and 43270 transitions. Word has length 31 [2020-10-14 23:43:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:26,492 INFO L479 AbstractCegarLoop]: Abstraction has 33928 states and 43270 transitions. [2020-10-14 23:43:26,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 33928 states and 43270 transitions. [2020-10-14 23:43:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:43:26,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:26,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:26,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:43:26,528 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:26,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:26,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1707606376, now seen corresponding path program 1 times [2020-10-14 23:43:26,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:26,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767593927] [2020-10-14 23:43:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:26,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:43:26,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 23:43:26,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:26,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:43:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:26,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:26,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:26,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:26,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:26,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:26,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:26,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:26,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:26,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:43:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:26,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767593927] [2020-10-14 23:43:26,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:26,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:26,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957338114] [2020-10-14 23:43:26,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:26,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:26,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:26,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:26,680 INFO L87 Difference]: Start difference. First operand 33928 states and 43270 transitions. Second operand 3 states. [2020-10-14 23:43:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:27,249 INFO L93 Difference]: Finished difference Result 50956 states and 64776 transitions. [2020-10-14 23:43:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:27,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 23:43:27,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:27,324 INFO L225 Difference]: With dead ends: 50956 [2020-10-14 23:43:27,324 INFO L226 Difference]: Without dead ends: 34314 [2020-10-14 23:43:27,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:27,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34314 states. [2020-10-14 23:43:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34314 to 34312. [2020-10-14 23:43:28,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34312 states. [2020-10-14 23:43:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34312 states to 34312 states and 43014 transitions. [2020-10-14 23:43:28,987 INFO L78 Accepts]: Start accepts. Automaton has 34312 states and 43014 transitions. Word has length 32 [2020-10-14 23:43:28,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:28,988 INFO L479 AbstractCegarLoop]: Abstraction has 34312 states and 43014 transitions. [2020-10-14 23:43:28,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:28,988 INFO L276 IsEmpty]: Start isEmpty. Operand 34312 states and 43014 transitions. [2020-10-14 23:43:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:43:29,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:29,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:29,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:43:29,036 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:29,038 INFO L82 PathProgramCache]: Analyzing trace with hash 999013018, now seen corresponding path program 1 times [2020-10-14 23:43:29,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:29,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440811927] [2020-10-14 23:43:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:29,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:29,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:29,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:29,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:43:29,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:29,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:43:29,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:29,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:43:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:29,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:29,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:29,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:29,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:29,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:29,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:29,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:29,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:29,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440811927] [2020-10-14 23:43:29,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:29,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:29,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90544853] [2020-10-14 23:43:29,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:29,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:29,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:29,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:29,106 INFO L87 Difference]: Start difference. First operand 34312 states and 43014 transitions. Second operand 3 states. [2020-10-14 23:43:29,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:29,461 INFO L93 Difference]: Finished difference Result 51468 states and 64264 transitions. [2020-10-14 23:43:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:29,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 23:43:29,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:29,510 INFO L225 Difference]: With dead ends: 51468 [2020-10-14 23:43:29,511 INFO L226 Difference]: Without dead ends: 34826 [2020-10-14 23:43:29,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34826 states. [2020-10-14 23:43:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34826 to 34824. [2020-10-14 23:43:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34824 states. [2020-10-14 23:43:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34824 states to 34824 states and 43014 transitions. [2020-10-14 23:43:30,401 INFO L78 Accepts]: Start accepts. Automaton has 34824 states and 43014 transitions. Word has length 32 [2020-10-14 23:43:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:30,402 INFO L479 AbstractCegarLoop]: Abstraction has 34824 states and 43014 transitions. [2020-10-14 23:43:30,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 34824 states and 43014 transitions. [2020-10-14 23:43:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:43:30,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:30,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:30,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:43:30,426 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:30,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:30,427 INFO L82 PathProgramCache]: Analyzing trace with hash -22055336, now seen corresponding path program 1 times [2020-10-14 23:43:30,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:30,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728304673] [2020-10-14 23:43:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:30,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:30,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:43:30,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:43:30,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:30,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:43:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:30,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:30,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:30,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:30,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:30,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:30,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:43:30,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:30,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:30,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728304673] [2020-10-14 23:43:30,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:30,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:30,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822423745] [2020-10-14 23:43:30,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:30,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:30,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:30,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:30,475 INFO L87 Difference]: Start difference. First operand 34824 states and 43014 transitions. Second operand 3 states. [2020-10-14 23:43:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:30,949 INFO L93 Difference]: Finished difference Result 57356 states and 71176 transitions. [2020-10-14 23:43:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:30,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 23:43:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:31,030 INFO L225 Difference]: With dead ends: 57356 [2020-10-14 23:43:31,030 INFO L226 Difference]: Without dead ends: 57354 [2020-10-14 23:43:31,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57354 states. [2020-10-14 23:43:31,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57354 to 53256. [2020-10-14 23:43:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53256 states. [2020-10-14 23:43:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53256 states to 53256 states and 64006 transitions. [2020-10-14 23:43:32,011 INFO L78 Accepts]: Start accepts. Automaton has 53256 states and 64006 transitions. Word has length 32 [2020-10-14 23:43:32,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:32,012 INFO L479 AbstractCegarLoop]: Abstraction has 53256 states and 64006 transitions. [2020-10-14 23:43:32,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 53256 states and 64006 transitions. [2020-10-14 23:43:32,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:43:32,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:32,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:32,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:43:32,063 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:32,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1301919014, now seen corresponding path program 1 times [2020-10-14 23:43:32,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:32,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206364032] [2020-10-14 23:43:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:32,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:32,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:32,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:43:32,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:32,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:43:32,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:32,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:43:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:32,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:32,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:32,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:32,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:32,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:32,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:32,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:32,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:32,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206364032] [2020-10-14 23:43:32,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:32,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:32,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666927166] [2020-10-14 23:43:32,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:32,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:32,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:32,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:32,111 INFO L87 Difference]: Start difference. First operand 53256 states and 64006 transitions. Second operand 3 states. [2020-10-14 23:43:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:32,625 INFO L93 Difference]: Finished difference Result 119820 states and 142856 transitions. [2020-10-14 23:43:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:32,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 23:43:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:32,696 INFO L225 Difference]: With dead ends: 119820 [2020-10-14 23:43:32,697 INFO L226 Difference]: Without dead ends: 67594 [2020-10-14 23:43:32,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67594 states. [2020-10-14 23:43:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 67592. [2020-10-14 23:43:33,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67592 states. [2020-10-14 23:43:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67592 states to 67592 states and 78854 transitions. [2020-10-14 23:43:33,963 INFO L78 Accepts]: Start accepts. Automaton has 67592 states and 78854 transitions. Word has length 32 [2020-10-14 23:43:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:33,963 INFO L479 AbstractCegarLoop]: Abstraction has 67592 states and 78854 transitions. [2020-10-14 23:43:33,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:33,963 INFO L276 IsEmpty]: Start isEmpty. Operand 67592 states and 78854 transitions. [2020-10-14 23:43:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:43:34,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:34,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:34,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:43:34,010 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:34,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:34,010 INFO L82 PathProgramCache]: Analyzing trace with hash -683499274, now seen corresponding path program 1 times [2020-10-14 23:43:34,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:34,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882632637] [2020-10-14 23:43:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:34,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:34,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:34,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:34,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:43:34,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 23:43:34,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:34,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:43:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:34,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:34,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:34,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:34,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:34,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:34,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:34,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:34,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:34,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:34,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:34,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:34,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882632637] [2020-10-14 23:43:34,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:34,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:34,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700809516] [2020-10-14 23:43:34,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:34,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:34,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:34,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:34,079 INFO L87 Difference]: Start difference. First operand 67592 states and 78854 transitions. Second operand 3 states. [2020-10-14 23:43:34,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:34,897 INFO L93 Difference]: Finished difference Result 101388 states and 117768 transitions. [2020-10-14 23:43:34,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:34,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 23:43:34,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:34,966 INFO L225 Difference]: With dead ends: 101388 [2020-10-14 23:43:34,966 INFO L226 Difference]: Without dead ends: 68618 [2020-10-14 23:43:35,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68618 states. [2020-10-14 23:43:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68618 to 68616. [2020-10-14 23:43:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68616 states. [2020-10-14 23:43:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68616 states to 68616 states and 78854 transitions. [2020-10-14 23:43:37,587 INFO L78 Accepts]: Start accepts. Automaton has 68616 states and 78854 transitions. Word has length 33 [2020-10-14 23:43:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:37,587 INFO L479 AbstractCegarLoop]: Abstraction has 68616 states and 78854 transitions. [2020-10-14 23:43:37,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 68616 states and 78854 transitions. [2020-10-14 23:43:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:43:37,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:37,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:37,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:43:37,623 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:37,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1704567628, now seen corresponding path program 1 times [2020-10-14 23:43:37,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:37,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758523972] [2020-10-14 23:43:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:37,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:37,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:43:37,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:37,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:43:37,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:37,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:43:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:43:37,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:37,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:37,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:37,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:37,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:37,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:43:37,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:37,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:37,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758523972] [2020-10-14 23:43:37,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:37,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:37,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421915275] [2020-10-14 23:43:37,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:37,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:37,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:37,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:37,672 INFO L87 Difference]: Start difference. First operand 68616 states and 78854 transitions. Second operand 3 states. [2020-10-14 23:43:38,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:38,366 INFO L93 Difference]: Finished difference Result 110602 states and 125959 transitions. [2020-10-14 23:43:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:38,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 23:43:38,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:38,497 INFO L225 Difference]: With dead ends: 110602 [2020-10-14 23:43:38,498 INFO L226 Difference]: Without dead ends: 110600 [2020-10-14 23:43:38,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:38,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110600 states. [2020-10-14 23:43:39,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110600 to 106504. [2020-10-14 23:43:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106504 states. [2020-10-14 23:43:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106504 states to 106504 states and 119814 transitions. [2020-10-14 23:43:39,983 INFO L78 Accepts]: Start accepts. Automaton has 106504 states and 119814 transitions. Word has length 33 [2020-10-14 23:43:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:39,983 INFO L479 AbstractCegarLoop]: Abstraction has 106504 states and 119814 transitions. [2020-10-14 23:43:39,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:39,984 INFO L276 IsEmpty]: Start isEmpty. Operand 106504 states and 119814 transitions. [2020-10-14 23:43:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:43:40,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:40,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:40,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:43:40,054 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1310535990, now seen corresponding path program 1 times [2020-10-14 23:43:40,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:40,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928850607] [2020-10-14 23:43:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:40,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:40,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:40,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:43:40,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:43:40,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:40,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:43:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:43:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:40,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:40,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:40,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:40,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:40,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:40,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:40,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:40,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:40,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928850607] [2020-10-14 23:43:40,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:40,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:40,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586847270] [2020-10-14 23:43:40,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:40,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:40,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:40,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:40,115 INFO L87 Difference]: Start difference. First operand 106504 states and 119814 transitions. Second operand 3 states. [2020-10-14 23:43:41,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:41,586 INFO L93 Difference]: Finished difference Result 237576 states and 263174 transitions. [2020-10-14 23:43:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:41,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 23:43:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:41,587 INFO L225 Difference]: With dead ends: 237576 [2020-10-14 23:43:41,587 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:43:41,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:41,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:43:41,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:43:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:43:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:43:41,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-10-14 23:43:41,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:41,718 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:43:41,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:43:41,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:43:41,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:43:41,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:43:41,765 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 23:43:41,765 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:43:41,765 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:43:41,765 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:43:41,765 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:43:41,765 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:43:41,765 INFO L268 CegarLoopResult]: For program point L126-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,766 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 191) no Hoare annotation was computed. [2020-10-14 23:43:41,766 INFO L268 CegarLoopResult]: For program point L151-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,766 INFO L268 CegarLoopResult]: For program point L176-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,766 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-10-14 23:43:41,766 INFO L268 CegarLoopResult]: For program point L152(line 152) no Hoare annotation was computed. [2020-10-14 23:43:41,766 INFO L268 CegarLoopResult]: For program point L177(line 177) no Hoare annotation was computed. [2020-10-14 23:43:41,766 INFO L268 CegarLoopResult]: For program point L136-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,766 INFO L268 CegarLoopResult]: For program point L161-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,766 INFO L268 CegarLoopResult]: For program point L120-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,767 INFO L268 CegarLoopResult]: For program point L112-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,767 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 191) no Hoare annotation was computed. [2020-10-14 23:43:41,767 INFO L268 CegarLoopResult]: For program point L137(line 137) no Hoare annotation was computed. [2020-10-14 23:43:41,767 INFO L268 CegarLoopResult]: For program point L104-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,767 INFO L268 CegarLoopResult]: For program point L162(line 162) no Hoare annotation was computed. [2020-10-14 23:43:41,767 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2020-10-14 23:43:41,767 INFO L268 CegarLoopResult]: For program point L96-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,767 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 191) the Hoare annotation is: true [2020-10-14 23:43:41,768 INFO L271 CegarLoopResult]: At program point L187(lines 5 191) the Hoare annotation is: true [2020-10-14 23:43:41,768 INFO L268 CegarLoopResult]: For program point L88-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,768 INFO L268 CegarLoopResult]: For program point L146-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,768 INFO L268 CegarLoopResult]: For program point L47(lines 47 49) no Hoare annotation was computed. [2020-10-14 23:43:41,768 INFO L268 CegarLoopResult]: For program point L80-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,768 INFO L268 CegarLoopResult]: For program point L171-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,768 INFO L268 CegarLoopResult]: For program point L147(line 147) no Hoare annotation was computed. [2020-10-14 23:43:41,768 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-10-14 23:43:41,768 INFO L268 CegarLoopResult]: For program point L131-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,769 INFO L268 CegarLoopResult]: For program point L156-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,769 INFO L271 CegarLoopResult]: At program point L181-1(lines 45 186) the Hoare annotation is: true [2020-10-14 23:43:41,769 INFO L268 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-10-14 23:43:41,769 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-10-14 23:43:41,769 INFO L268 CegarLoopResult]: For program point L182(line 182) no Hoare annotation was computed. [2020-10-14 23:43:41,769 INFO L264 CegarLoopResult]: At program point L182-1(lines 5 191) the Hoare annotation is: false [2020-10-14 23:43:41,769 INFO L268 CegarLoopResult]: For program point L116-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,769 INFO L268 CegarLoopResult]: For program point L141-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,770 INFO L268 CegarLoopResult]: For program point L108-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,770 INFO L268 CegarLoopResult]: For program point L166-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,770 INFO L268 CegarLoopResult]: For program point L100-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,770 INFO L268 CegarLoopResult]: For program point L92-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,770 INFO L268 CegarLoopResult]: For program point L84-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,770 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-10-14 23:43:41,770 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-10-14 23:43:41,770 INFO L268 CegarLoopResult]: For program point L76-2(lines 45 186) no Hoare annotation was computed. [2020-10-14 23:43:41,771 INFO L268 CegarLoopResult]: For program point L167(line 167) no Hoare annotation was computed. [2020-10-14 23:43:41,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:43:41 BoogieIcfgContainer [2020-10-14 23:43:41,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:43:41,786 INFO L168 Benchmark]: Toolchain (without parser) took 27060.56 ms. Allocated memory was 147.3 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 101.9 MB in the beginning and 821.0 MB in the end (delta: -719.1 MB). Peak memory consumption was 964.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:43:41,787 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 23:43:41,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.08 ms. Allocated memory is still 147.3 MB. Free memory was 101.5 MB in the beginning and 90.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:43:41,788 INFO L168 Benchmark]: Boogie Preprocessor took 143.29 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 90.4 MB in the beginning and 180.4 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:43:41,788 INFO L168 Benchmark]: RCFGBuilder took 422.11 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 158.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:43:41,789 INFO L168 Benchmark]: TraceAbstraction took 26117.77 ms. Allocated memory was 202.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 158.7 MB in the beginning and 821.0 MB in the end (delta: -662.3 MB). Peak memory consumption was 965.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:43:41,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 372.08 ms. Allocated memory is still 147.3 MB. Free memory was 101.5 MB in the beginning and 90.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.29 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 90.4 MB in the beginning and 180.4 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.11 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 158.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26117.77 ms. Allocated memory was 202.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 158.7 MB in the beginning and 821.0 MB in the end (delta: -662.3 MB). Peak memory consumption was 965.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 189]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.9s, OverallIterations: 34, TraceHistogramMax: 1, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3404 SDtfs, 1676 SDslu, 2337 SDs, 0 SdLazy, 181 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106504occurred in iteration=33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 16420 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 4106 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 944 NumberOfCodeBlocks, 944 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 910 ConstructedInterpolants, 0 QuantifiedInterpolants, 50512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...