/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:11:57,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:11:57,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:11:57,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:11:57,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:11:57,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:11:57,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:11:57,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:11:57,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:11:57,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:11:57,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:11:57,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:11:57,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:11:57,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:11:57,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:11:57,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:11:57,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:11:57,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:11:57,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:11:57,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:11:57,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:11:57,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:11:57,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:11:57,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:11:57,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:11:57,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:11:57,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:11:57,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:11:57,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:11:57,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:11:57,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:11:57,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:11:57,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:11:57,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:11:57,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:11:57,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:11:57,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:11:57,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:11:57,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:11:57,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:11:57,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:11:57,176 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 05:11:57,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:11:57,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:11:57,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:11:57,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:11:57,222 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:11:57,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:11:57,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:11:57,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:11:57,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:11:57,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:11:57,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:11:57,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:11:57,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:11:57,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:11:57,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:11:57,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:11:57,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:11:57,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:11:57,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:11:57,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:11:57,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:11:57,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:11:57,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:11:57,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:11:57,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:11:57,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:11:57,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:11:57,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:11:57,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:11:57,228 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:11:57,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:11:57,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:11:57,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:11:57,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:11:57,574 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:11:57,575 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2020-10-14 05:11:57,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c418791/07048871919f44ee9b90e04d6830e9bc/FLAG046dd901b [2020-10-14 05:11:58,136 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:11:58,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_10.c [2020-10-14 05:11:58,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c418791/07048871919f44ee9b90e04d6830e9bc/FLAG046dd901b [2020-10-14 05:11:58,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c418791/07048871919f44ee9b90e04d6830e9bc [2020-10-14 05:11:58,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:11:58,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:11:58,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:11:58,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:11:58,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:11:58,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:11:58" (1/1) ... [2020-10-14 05:11:58,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58, skipping insertion in model container [2020-10-14 05:11:58,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:11:58" (1/1) ... [2020-10-14 05:11:58,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:11:58,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:11:58,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:11:58,766 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:11:58,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:11:58,811 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:11:58,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58 WrapperNode [2020-10-14 05:11:58,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:11:58,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:11:58,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:11:58,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:11:58,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58" (1/1) ... [2020-10-14 05:11:58,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58" (1/1) ... [2020-10-14 05:11:58,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58" (1/1) ... [2020-10-14 05:11:58,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58" (1/1) ... [2020-10-14 05:11:58,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58" (1/1) ... [2020-10-14 05:11:58,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58" (1/1) ... [2020-10-14 05:11:58,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58" (1/1) ... [2020-10-14 05:11:58,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:11:58,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:11:58,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:11:58,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:11:58,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58" (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 05:11:59,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:11:59,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:11:59,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:11:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:11:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:11:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:11:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:11:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:11:59,311 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:11:59,311 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:11:59,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:11:59 BoogieIcfgContainer [2020-10-14 05:11:59,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:11:59,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:11:59,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:11:59,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:11:59,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:11:58" (1/3) ... [2020-10-14 05:11:59,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a98be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:11:59, skipping insertion in model container [2020-10-14 05:11:59,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:58" (2/3) ... [2020-10-14 05:11:59,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a98be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:11:59, skipping insertion in model container [2020-10-14 05:11:59,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:11:59" (3/3) ... [2020-10-14 05:11:59,328 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-10-14 05:11:59,343 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:11:59,351 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:11:59,371 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:11:59,415 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:11:59,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:11:59,418 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:11:59,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:11:59,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:11:59,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:11:59,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:11:59,419 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:11:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-14 05:11:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:11:59,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:59,457 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] [2020-10-14 05:11:59,457 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:59,464 INFO L82 PathProgramCache]: Analyzing trace with hash -917347053, now seen corresponding path program 1 times [2020-10-14 05:11:59,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:59,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250017059] [2020-10-14 05:11:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:59,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:59,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:11:59,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 05:11:59,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:59,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:11:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:11:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:11:59,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:11:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:59,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:59,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:59,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:11:59,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:11:59,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:59,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:59,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:59,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:59,916 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 05:11:59,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250017059] [2020-10-14 05:11:59,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:11:59,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:11:59,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072605840] [2020-10-14 05:11:59,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:11:59,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:59,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:11:59,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:11:59,943 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-14 05:12:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:00,034 INFO L93 Difference]: Finished difference Result 87 states and 150 transitions. [2020-10-14 05:12:00,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:00,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-14 05:12:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:00,050 INFO L225 Difference]: With dead ends: 87 [2020-10-14 05:12:00,050 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 05:12:00,054 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 05:12:00,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 05:12:00,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50. [2020-10-14 05:12:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 05:12:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 89 transitions. [2020-10-14 05:12:00,103 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 89 transitions. Word has length 20 [2020-10-14 05:12:00,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:00,104 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 89 transitions. [2020-10-14 05:12:00,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 89 transitions. [2020-10-14 05:12:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:12:00,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:00,106 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] [2020-10-14 05:12:00,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:12:00,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:00,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1504153067, now seen corresponding path program 1 times [2020-10-14 05:12:00,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:00,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526881779] [2020-10-14 05:12:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:12:00,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:00,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 05:12:00,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:00,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:00,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:00,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:12:00,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:12:00,278 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 05:12:00,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526881779] [2020-10-14 05:12:00,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:00,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:00,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417048328] [2020-10-14 05:12:00,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:00,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:00,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:00,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:00,287 INFO L87 Difference]: Start difference. First operand 50 states and 89 transitions. Second operand 3 states. [2020-10-14 05:12:00,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:00,329 INFO L93 Difference]: Finished difference Result 117 states and 212 transitions. [2020-10-14 05:12:00,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:00,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-14 05:12:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:00,332 INFO L225 Difference]: With dead ends: 117 [2020-10-14 05:12:00,332 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 05:12:00,333 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 05:12:00,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 05:12:00,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-14 05:12:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 05:12:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 125 transitions. [2020-10-14 05:12:00,346 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 125 transitions. Word has length 20 [2020-10-14 05:12:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:00,347 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 125 transitions. [2020-10-14 05:12:00,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:00,347 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 125 transitions. [2020-10-14 05:12:00,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:12:00,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:00,348 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] [2020-10-14 05:12:00,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:12:00,349 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:00,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:00,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1627225809, now seen corresponding path program 1 times [2020-10-14 05:12:00,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:00,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893407512] [2020-10-14 05:12:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:12:00,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 05:12:00,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 05:12:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:00,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:00,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:12:00,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:00,525 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 05:12:00,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893407512] [2020-10-14 05:12:00,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:00,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:00,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824039286] [2020-10-14 05:12:00,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:00,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:00,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:00,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:00,529 INFO L87 Difference]: Start difference. First operand 70 states and 125 transitions. Second operand 3 states. [2020-10-14 05:12:00,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:00,564 INFO L93 Difference]: Finished difference Result 133 states and 239 transitions. [2020-10-14 05:12:00,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:00,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 05:12:00,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:00,567 INFO L225 Difference]: With dead ends: 133 [2020-10-14 05:12:00,568 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 05:12:00,568 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 05:12:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 05:12:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 93. [2020-10-14 05:12:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 05:12:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 167 transitions. [2020-10-14 05:12:00,586 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 167 transitions. Word has length 21 [2020-10-14 05:12:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:00,587 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 167 transitions. [2020-10-14 05:12:00,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 167 transitions. [2020-10-14 05:12:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:12:00,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:00,592 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] [2020-10-14 05:12:00,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:12:00,593 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:00,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1040419795, now seen corresponding path program 1 times [2020-10-14 05:12:00,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:00,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467908899] [2020-10-14 05:12:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:12:00,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:00,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 05:12:00,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:00,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:00,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:00,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:00,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:12:00,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:00,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:00,801 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 05:12:00,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467908899] [2020-10-14 05:12:00,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:00,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:00,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982305539] [2020-10-14 05:12:00,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:00,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:00,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:00,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:00,807 INFO L87 Difference]: Start difference. First operand 93 states and 167 transitions. Second operand 3 states. [2020-10-14 05:12:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:00,833 INFO L93 Difference]: Finished difference Result 221 states and 401 transitions. [2020-10-14 05:12:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:00,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 05:12:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:00,836 INFO L225 Difference]: With dead ends: 221 [2020-10-14 05:12:00,836 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 05:12:00,837 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 05:12:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 05:12:00,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-10-14 05:12:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 05:12:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 234 transitions. [2020-10-14 05:12:00,850 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 234 transitions. Word has length 21 [2020-10-14 05:12:00,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:00,850 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 234 transitions. [2020-10-14 05:12:00,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 234 transitions. [2020-10-14 05:12:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:12:00,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:00,852 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 05:12:00,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:12:00,852 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1095393752, now seen corresponding path program 1 times [2020-10-14 05:12:00,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:00,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798713747] [2020-10-14 05:12:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:12:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:00,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 05:12:00,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:00,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:01,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:01,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:12:01,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:01,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:01,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:01,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,013 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 05:12:01,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798713747] [2020-10-14 05:12:01,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:01,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:01,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366589124] [2020-10-14 05:12:01,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:01,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:01,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:01,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,017 INFO L87 Difference]: Start difference. First operand 131 states and 234 transitions. Second operand 3 states. [2020-10-14 05:12:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:01,043 INFO L93 Difference]: Finished difference Result 247 states and 444 transitions. [2020-10-14 05:12:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:01,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 05:12:01,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:01,050 INFO L225 Difference]: With dead ends: 247 [2020-10-14 05:12:01,051 INFO L226 Difference]: Without dead ends: 245 [2020-10-14 05:12:01,051 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 05:12:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-14 05:12:01,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 179. [2020-10-14 05:12:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 05:12:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 318 transitions. [2020-10-14 05:12:01,090 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 318 transitions. Word has length 22 [2020-10-14 05:12:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:01,091 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 318 transitions. [2020-10-14 05:12:01,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 318 transitions. [2020-10-14 05:12:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:12:01,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:01,097 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 05:12:01,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:12:01,097 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:01,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:01,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1682199766, now seen corresponding path program 1 times [2020-10-14 05:12:01,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:01,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426705772] [2020-10-14 05:12:01,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:12:01,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 05:12:01,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:01,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:01,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:12:01,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:01,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:12:01,337 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 05:12:01,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426705772] [2020-10-14 05:12:01,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:01,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:01,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997982142] [2020-10-14 05:12:01,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:01,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:01,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:01,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,342 INFO L87 Difference]: Start difference. First operand 179 states and 318 transitions. Second operand 3 states. [2020-10-14 05:12:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:01,372 INFO L93 Difference]: Finished difference Result 270 states and 475 transitions. [2020-10-14 05:12:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:01,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 05:12:01,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:01,375 INFO L225 Difference]: With dead ends: 270 [2020-10-14 05:12:01,382 INFO L226 Difference]: Without dead ends: 184 [2020-10-14 05:12:01,384 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 05:12:01,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-14 05:12:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2020-10-14 05:12:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-14 05:12:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 316 transitions. [2020-10-14 05:12:01,410 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 316 transitions. Word has length 22 [2020-10-14 05:12:01,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:01,413 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 316 transitions. [2020-10-14 05:12:01,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:01,414 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 316 transitions. [2020-10-14 05:12:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:12:01,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:01,416 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 05:12:01,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:12:01,418 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:01,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1332903852, now seen corresponding path program 1 times [2020-10-14 05:12:01,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:01,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236707095] [2020-10-14 05:12:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:12:01,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:01,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 05:12:01,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:01,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:01,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:01,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:01,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:01,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,551 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 05:12:01,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236707095] [2020-10-14 05:12:01,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:01,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:01,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727759291] [2020-10-14 05:12:01,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:01,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:01,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:01,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,555 INFO L87 Difference]: Start difference. First operand 182 states and 316 transitions. Second operand 3 states. [2020-10-14 05:12:01,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:01,574 INFO L93 Difference]: Finished difference Result 430 states and 754 transitions. [2020-10-14 05:12:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:01,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 05:12:01,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:01,576 INFO L225 Difference]: With dead ends: 430 [2020-10-14 05:12:01,576 INFO L226 Difference]: Without dead ends: 256 [2020-10-14 05:12:01,578 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 05:12:01,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-14 05:12:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2020-10-14 05:12:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-14 05:12:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 438 transitions. [2020-10-14 05:12:01,590 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 438 transitions. Word has length 22 [2020-10-14 05:12:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:01,590 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 438 transitions. [2020-10-14 05:12:01,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:01,591 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 438 transitions. [2020-10-14 05:12:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:12:01,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:01,592 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 05:12:01,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:12:01,593 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:01,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:01,593 INFO L82 PathProgramCache]: Analyzing trace with hash -618322236, now seen corresponding path program 1 times [2020-10-14 05:12:01,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:01,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311867526] [2020-10-14 05:12:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:12:01,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:01,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 05:12:01,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:01,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:01,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:01,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:01,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:01,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:01,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,704 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 05:12:01,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311867526] [2020-10-14 05:12:01,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:01,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:01,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95903904] [2020-10-14 05:12:01,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:01,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:01,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:01,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,707 INFO L87 Difference]: Start difference. First operand 254 states and 438 transitions. Second operand 3 states. [2020-10-14 05:12:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:01,727 INFO L93 Difference]: Finished difference Result 470 states and 820 transitions. [2020-10-14 05:12:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:01,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 05:12:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:01,731 INFO L225 Difference]: With dead ends: 470 [2020-10-14 05:12:01,731 INFO L226 Difference]: Without dead ends: 468 [2020-10-14 05:12:01,732 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 05:12:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-10-14 05:12:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 354. [2020-10-14 05:12:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-14 05:12:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 602 transitions. [2020-10-14 05:12:01,745 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 602 transitions. Word has length 23 [2020-10-14 05:12:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:01,746 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 602 transitions. [2020-10-14 05:12:01,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 602 transitions. [2020-10-14 05:12:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:12:01,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:01,748 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 05:12:01,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:12:01,748 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:01,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1205128250, now seen corresponding path program 1 times [2020-10-14 05:12:01,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:01,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831111646] [2020-10-14 05:12:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:12:01,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 05:12:01,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:01,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:01,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:01,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:01,887 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 05:12:01,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831111646] [2020-10-14 05:12:01,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:01,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:01,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841852221] [2020-10-14 05:12:01,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:01,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:01,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:01,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,890 INFO L87 Difference]: Start difference. First operand 354 states and 602 transitions. Second operand 3 states. [2020-10-14 05:12:01,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:01,920 INFO L93 Difference]: Finished difference Result 528 states and 894 transitions. [2020-10-14 05:12:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:01,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 05:12:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:01,924 INFO L225 Difference]: With dead ends: 528 [2020-10-14 05:12:01,924 INFO L226 Difference]: Without dead ends: 358 [2020-10-14 05:12:01,926 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 05:12:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-14 05:12:01,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-10-14 05:12:01,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-14 05:12:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 594 transitions. [2020-10-14 05:12:01,943 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 594 transitions. Word has length 23 [2020-10-14 05:12:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:01,944 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 594 transitions. [2020-10-14 05:12:01,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 594 transitions. [2020-10-14 05:12:01,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:12:01,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:01,946 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 05:12:01,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:12:01,947 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:01,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:01,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1809975368, now seen corresponding path program 1 times [2020-10-14 05:12:01,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:01,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603308256] [2020-10-14 05:12:01,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:12:02,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:02,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 05:12:02,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:02,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:02,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:02,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:02,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,053 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 05:12:02,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603308256] [2020-10-14 05:12:02,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:02,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:02,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449282593] [2020-10-14 05:12:02,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:02,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:02,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:02,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,057 INFO L87 Difference]: Start difference. First operand 356 states and 594 transitions. Second operand 3 states. [2020-10-14 05:12:02,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:02,087 INFO L93 Difference]: Finished difference Result 840 states and 1412 transitions. [2020-10-14 05:12:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:02,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 05:12:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:02,101 INFO L225 Difference]: With dead ends: 840 [2020-10-14 05:12:02,102 INFO L226 Difference]: Without dead ends: 494 [2020-10-14 05:12:02,103 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 05:12:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-14 05:12:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 492. [2020-10-14 05:12:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-14 05:12:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 814 transitions. [2020-10-14 05:12:02,127 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 814 transitions. Word has length 23 [2020-10-14 05:12:02,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:02,127 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 814 transitions. [2020-10-14 05:12:02,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 814 transitions. [2020-10-14 05:12:02,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:12:02,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:02,130 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 05:12:02,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:12:02,130 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:02,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1285993213, now seen corresponding path program 1 times [2020-10-14 05:12:02,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:02,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043110637] [2020-10-14 05:12:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:12:02,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 05:12:02,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:02,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:02,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:02,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:02,258 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 05:12:02,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043110637] [2020-10-14 05:12:02,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:02,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:02,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362109967] [2020-10-14 05:12:02,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:02,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:02,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:02,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,260 INFO L87 Difference]: Start difference. First operand 492 states and 814 transitions. Second operand 3 states. [2020-10-14 05:12:02,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:02,295 INFO L93 Difference]: Finished difference Result 896 states and 1504 transitions. [2020-10-14 05:12:02,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:02,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 05:12:02,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:02,301 INFO L225 Difference]: With dead ends: 896 [2020-10-14 05:12:02,302 INFO L226 Difference]: Without dead ends: 894 [2020-10-14 05:12:02,302 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 05:12:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-14 05:12:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 700. [2020-10-14 05:12:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-10-14 05:12:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1134 transitions. [2020-10-14 05:12:02,327 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1134 transitions. Word has length 24 [2020-10-14 05:12:02,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:02,328 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 1134 transitions. [2020-10-14 05:12:02,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1134 transitions. [2020-10-14 05:12:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:12:02,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:02,330 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 05:12:02,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:12:02,330 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:02,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:02,331 INFO L82 PathProgramCache]: Analyzing trace with hash 699187199, now seen corresponding path program 1 times [2020-10-14 05:12:02,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:02,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103021694] [2020-10-14 05:12:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:12:02,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:02,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 05:12:02,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:02,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:02,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:02,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:02,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,449 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 05:12:02,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103021694] [2020-10-14 05:12:02,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:02,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:02,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320660788] [2020-10-14 05:12:02,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:02,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:02,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:02,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,452 INFO L87 Difference]: Start difference. First operand 700 states and 1134 transitions. Second operand 3 states. [2020-10-14 05:12:02,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:02,484 INFO L93 Difference]: Finished difference Result 1648 states and 2688 transitions. [2020-10-14 05:12:02,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:02,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 05:12:02,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:02,490 INFO L225 Difference]: With dead ends: 1648 [2020-10-14 05:12:02,490 INFO L226 Difference]: Without dead ends: 958 [2020-10-14 05:12:02,492 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 05:12:02,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-10-14 05:12:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 956. [2020-10-14 05:12:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2020-10-14 05:12:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1534 transitions. [2020-10-14 05:12:02,525 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1534 transitions. Word has length 24 [2020-10-14 05:12:02,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:02,526 INFO L479 AbstractCegarLoop]: Abstraction has 956 states and 1534 transitions. [2020-10-14 05:12:02,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:02,526 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1534 transitions. [2020-10-14 05:12:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:02,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:02,528 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] [2020-10-14 05:12:02,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:12:02,528 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:02,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:02,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1211298683, now seen corresponding path program 1 times [2020-10-14 05:12:02,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:02,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28219822] [2020-10-14 05:12:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:02,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:12:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 05:12:02,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:12:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:02,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:02,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:02,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:02,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:02,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:02,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,698 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 05:12:02,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28219822] [2020-10-14 05:12:02,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:02,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:02,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753277398] [2020-10-14 05:12:02,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:02,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:02,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:02,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,700 INFO L87 Difference]: Start difference. First operand 956 states and 1534 transitions. Second operand 3 states. [2020-10-14 05:12:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:02,732 INFO L93 Difference]: Finished difference Result 1712 states and 2784 transitions. [2020-10-14 05:12:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:02,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:02,742 INFO L225 Difference]: With dead ends: 1712 [2020-10-14 05:12:02,742 INFO L226 Difference]: Without dead ends: 1710 [2020-10-14 05:12:02,744 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 05:12:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2020-10-14 05:12:02,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1388. [2020-10-14 05:12:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1388 states. [2020-10-14 05:12:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 2174 transitions. [2020-10-14 05:12:02,788 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 2174 transitions. Word has length 25 [2020-10-14 05:12:02,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:02,788 INFO L479 AbstractCegarLoop]: Abstraction has 1388 states and 2174 transitions. [2020-10-14 05:12:02,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:02,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 2174 transitions. [2020-10-14 05:12:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:02,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:02,791 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 05:12:02,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:12:02,791 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:02,792 INFO L82 PathProgramCache]: Analyzing trace with hash 624492669, now seen corresponding path program 1 times [2020-10-14 05:12:02,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:02,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870460392] [2020-10-14 05:12:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:02,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:12:02,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 05:12:02,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:12:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:02,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:02,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,949 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 05:12:02,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870460392] [2020-10-14 05:12:02,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:02,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:02,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523007910] [2020-10-14 05:12:02,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:02,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:02,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:02,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,952 INFO L87 Difference]: Start difference. First operand 1388 states and 2174 transitions. Second operand 3 states. [2020-10-14 05:12:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:02,998 INFO L93 Difference]: Finished difference Result 3248 states and 5120 transitions. [2020-10-14 05:12:02,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:02,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:03,010 INFO L225 Difference]: With dead ends: 3248 [2020-10-14 05:12:03,010 INFO L226 Difference]: Without dead ends: 1870 [2020-10-14 05:12:03,013 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 05:12:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2020-10-14 05:12:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1868. [2020-10-14 05:12:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1868 states. [2020-10-14 05:12:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2894 transitions. [2020-10-14 05:12:03,076 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2894 transitions. Word has length 25 [2020-10-14 05:12:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:03,077 INFO L479 AbstractCegarLoop]: Abstraction has 1868 states and 2894 transitions. [2020-10-14 05:12:03,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2894 transitions. [2020-10-14 05:12:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:12:03,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:03,080 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 05:12:03,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:12:03,081 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:03,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:03,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1104231406, now seen corresponding path program 1 times [2020-10-14 05:12:03,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:03,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268655955] [2020-10-14 05:12:03,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:03,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:03,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:03,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:12:03,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 05:12:03,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:03,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:03,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:03,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:12:03,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:03,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:03,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:03,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:03,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:03,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:03,373 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 05:12:03,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268655955] [2020-10-14 05:12:03,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:03,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:03,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284824351] [2020-10-14 05:12:03,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:03,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:03,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:03,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:03,375 INFO L87 Difference]: Start difference. First operand 1868 states and 2894 transitions. Second operand 3 states. [2020-10-14 05:12:03,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:03,426 INFO L93 Difference]: Finished difference Result 3280 states and 5136 transitions. [2020-10-14 05:12:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:03,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 05:12:03,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:03,445 INFO L225 Difference]: With dead ends: 3280 [2020-10-14 05:12:03,445 INFO L226 Difference]: Without dead ends: 3278 [2020-10-14 05:12:03,447 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 05:12:03,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3278 states. [2020-10-14 05:12:03,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 2764. [2020-10-14 05:12:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2020-10-14 05:12:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4174 transitions. [2020-10-14 05:12:03,533 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4174 transitions. Word has length 26 [2020-10-14 05:12:03,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:03,533 INFO L479 AbstractCegarLoop]: Abstraction has 2764 states and 4174 transitions. [2020-10-14 05:12:03,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:03,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4174 transitions. [2020-10-14 05:12:03,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:12:03,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:03,539 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 05:12:03,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:12:03,539 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:03,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1691037420, now seen corresponding path program 1 times [2020-10-14 05:12:03,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:03,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166815948] [2020-10-14 05:12:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:03,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:03,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:12:03,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 05:12:03,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:03,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:12:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:03,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:03,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:03,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:03,786 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 05:12:03,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166815948] [2020-10-14 05:12:03,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:03,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:03,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416258557] [2020-10-14 05:12:03,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:03,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:03,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:03,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:03,788 INFO L87 Difference]: Start difference. First operand 2764 states and 4174 transitions. Second operand 3 states. [2020-10-14 05:12:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:03,863 INFO L93 Difference]: Finished difference Result 6416 states and 9744 transitions. [2020-10-14 05:12:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:03,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 05:12:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:03,882 INFO L225 Difference]: With dead ends: 6416 [2020-10-14 05:12:03,883 INFO L226 Difference]: Without dead ends: 3662 [2020-10-14 05:12:03,888 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 05:12:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2020-10-14 05:12:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3660. [2020-10-14 05:12:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3660 states. [2020-10-14 05:12:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5454 transitions. [2020-10-14 05:12:04,016 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5454 transitions. Word has length 26 [2020-10-14 05:12:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:04,017 INFO L479 AbstractCegarLoop]: Abstraction has 3660 states and 5454 transitions. [2020-10-14 05:12:04,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5454 transitions. [2020-10-14 05:12:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:04,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:04,022 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 05:12:04,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:12:04,022 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:04,023 INFO L82 PathProgramCache]: Analyzing trace with hash 128780208, now seen corresponding path program 1 times [2020-10-14 05:12:04,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:04,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151522973] [2020-10-14 05:12:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:04,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:12:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-14 05:12:04,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:04,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:04,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:04,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:04,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:04,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:04,493 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 05:12:04,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151522973] [2020-10-14 05:12:04,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:04,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:04,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361003451] [2020-10-14 05:12:04,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:04,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:04,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:04,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:04,496 INFO L87 Difference]: Start difference. First operand 3660 states and 5454 transitions. Second operand 3 states. [2020-10-14 05:12:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:04,557 INFO L93 Difference]: Finished difference Result 5460 states and 8088 transitions. [2020-10-14 05:12:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:04,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:04,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:04,575 INFO L225 Difference]: With dead ends: 5460 [2020-10-14 05:12:04,575 INFO L226 Difference]: Without dead ends: 3666 [2020-10-14 05:12:04,579 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 05:12:04,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2020-10-14 05:12:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3664. [2020-10-14 05:12:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3664 states. [2020-10-14 05:12:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 5334 transitions. [2020-10-14 05:12:04,719 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 5334 transitions. Word has length 27 [2020-10-14 05:12:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:04,719 INFO L479 AbstractCegarLoop]: Abstraction has 3664 states and 5334 transitions. [2020-10-14 05:12:04,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 5334 transitions. [2020-10-14 05:12:04,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:04,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:04,725 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 05:12:04,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:12:04,725 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:04,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1865364498, now seen corresponding path program 1 times [2020-10-14 05:12:04,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:04,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77002844] [2020-10-14 05:12:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:04,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:12:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 05:12:04,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:04,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:04,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:04,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:04,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:04,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:04,948 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 05:12:04,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77002844] [2020-10-14 05:12:04,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:04,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:04,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617257440] [2020-10-14 05:12:04,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:04,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:04,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:04,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:04,950 INFO L87 Difference]: Start difference. First operand 3664 states and 5334 transitions. Second operand 3 states. [2020-10-14 05:12:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:05,019 INFO L93 Difference]: Finished difference Result 5468 states and 7912 transitions. [2020-10-14 05:12:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:05,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:05,040 INFO L225 Difference]: With dead ends: 5468 [2020-10-14 05:12:05,040 INFO L226 Difference]: Without dead ends: 3674 [2020-10-14 05:12:05,045 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 05:12:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2020-10-14 05:12:05,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3672. [2020-10-14 05:12:05,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-10-14 05:12:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 5222 transitions. [2020-10-14 05:12:05,147 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 5222 transitions. Word has length 27 [2020-10-14 05:12:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:05,148 INFO L479 AbstractCegarLoop]: Abstraction has 3672 states and 5222 transitions. [2020-10-14 05:12:05,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 5222 transitions. [2020-10-14 05:12:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:05,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:05,153 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 05:12:05,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:12:05,153 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:05,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:05,153 INFO L82 PathProgramCache]: Analyzing trace with hash 841254896, now seen corresponding path program 1 times [2020-10-14 05:12:05,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:05,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161692031] [2020-10-14 05:12:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:05,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:12:05,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 05:12:05,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:05,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:05,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:05,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:05,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:05,302 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 05:12:05,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161692031] [2020-10-14 05:12:05,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:05,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:05,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138807620] [2020-10-14 05:12:05,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:05,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:05,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:05,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:05,304 INFO L87 Difference]: Start difference. First operand 3672 states and 5222 transitions. Second operand 3 states. [2020-10-14 05:12:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:05,412 INFO L93 Difference]: Finished difference Result 5484 states and 7752 transitions. [2020-10-14 05:12:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:05,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:05,431 INFO L225 Difference]: With dead ends: 5484 [2020-10-14 05:12:05,432 INFO L226 Difference]: Without dead ends: 3690 [2020-10-14 05:12:05,437 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 05:12:05,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2020-10-14 05:12:05,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3688. [2020-10-14 05:12:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3688 states. [2020-10-14 05:12:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 5126 transitions. [2020-10-14 05:12:05,572 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 5126 transitions. Word has length 27 [2020-10-14 05:12:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:05,572 INFO L479 AbstractCegarLoop]: Abstraction has 3688 states and 5126 transitions. [2020-10-14 05:12:05,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:05,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 5126 transitions. [2020-10-14 05:12:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:05,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:05,580 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 05:12:05,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:12:05,580 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:05,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:05,581 INFO L82 PathProgramCache]: Analyzing trace with hash -179813458, now seen corresponding path program 1 times [2020-10-14 05:12:05,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:05,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358518224] [2020-10-14 05:12:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:05,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:05,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 05:12:05,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:12:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:05,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:05,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:05,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:05,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:05,689 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 05:12:05,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358518224] [2020-10-14 05:12:05,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:05,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:05,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11325773] [2020-10-14 05:12:05,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:05,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:05,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:05,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:05,692 INFO L87 Difference]: Start difference. First operand 3688 states and 5126 transitions. Second operand 3 states. [2020-10-14 05:12:05,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:05,754 INFO L93 Difference]: Finished difference Result 5580 states and 7752 transitions. [2020-10-14 05:12:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:05,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:05,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:05,763 INFO L225 Difference]: With dead ends: 5580 [2020-10-14 05:12:05,764 INFO L226 Difference]: Without dead ends: 3786 [2020-10-14 05:12:05,768 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 05:12:05,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2020-10-14 05:12:05,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3784. [2020-10-14 05:12:05,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3784 states. [2020-10-14 05:12:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5190 transitions. [2020-10-14 05:12:05,865 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5190 transitions. Word has length 27 [2020-10-14 05:12:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:05,865 INFO L479 AbstractCegarLoop]: Abstraction has 3784 states and 5190 transitions. [2020-10-14 05:12:05,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5190 transitions. [2020-10-14 05:12:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:05,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:05,870 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 05:12:05,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:12:05,871 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:05,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:05,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1190930708, now seen corresponding path program 1 times [2020-10-14 05:12:05,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:05,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219125478] [2020-10-14 05:12:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:05,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:12:05,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:12:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:05,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:05,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:05,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:05,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:05,929 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 05:12:05,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219125478] [2020-10-14 05:12:05,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:05,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:05,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611534135] [2020-10-14 05:12:05,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:05,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:05,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:05,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:05,931 INFO L87 Difference]: Start difference. First operand 3784 states and 5190 transitions. Second operand 3 states. [2020-10-14 05:12:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:05,995 INFO L93 Difference]: Finished difference Result 5580 states and 7560 transitions. [2020-10-14 05:12:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:05,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:05,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:06,005 INFO L225 Difference]: With dead ends: 5580 [2020-10-14 05:12:06,005 INFO L226 Difference]: Without dead ends: 3786 [2020-10-14 05:12:06,009 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 05:12:06,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2020-10-14 05:12:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3784. [2020-10-14 05:12:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3784 states. [2020-10-14 05:12:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5062 transitions. [2020-10-14 05:12:06,112 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5062 transitions. Word has length 27 [2020-10-14 05:12:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:06,112 INFO L479 AbstractCegarLoop]: Abstraction has 3784 states and 5062 transitions. [2020-10-14 05:12:06,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5062 transitions. [2020-10-14 05:12:06,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:06,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:06,118 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 05:12:06,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:12:06,119 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:06,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:06,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1824172910, now seen corresponding path program 1 times [2020-10-14 05:12:06,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:06,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556128640] [2020-10-14 05:12:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:06,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:06,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:06,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:12:06,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:06,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:06,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:06,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:06,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:06,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:06,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:06,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:06,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:06,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:06,170 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 05:12:06,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556128640] [2020-10-14 05:12:06,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:06,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:06,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955955457] [2020-10-14 05:12:06,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:06,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:06,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:06,173 INFO L87 Difference]: Start difference. First operand 3784 states and 5062 transitions. Second operand 3 states. [2020-10-14 05:12:06,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:06,301 INFO L93 Difference]: Finished difference Result 10956 states and 14408 transitions. [2020-10-14 05:12:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:06,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:06,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:06,316 INFO L225 Difference]: With dead ends: 10956 [2020-10-14 05:12:06,316 INFO L226 Difference]: Without dead ends: 7306 [2020-10-14 05:12:06,323 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 05:12:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7306 states. [2020-10-14 05:12:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7306 to 7304. [2020-10-14 05:12:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7304 states. [2020-10-14 05:12:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 9350 transitions. [2020-10-14 05:12:06,493 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 9350 transitions. Word has length 27 [2020-10-14 05:12:06,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:06,493 INFO L479 AbstractCegarLoop]: Abstraction has 7304 states and 9350 transitions. [2020-10-14 05:12:06,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:06,494 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 9350 transitions. [2020-10-14 05:12:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:06,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:06,503 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 05:12:06,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:12:06,503 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:06,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1883988372, now seen corresponding path program 1 times [2020-10-14 05:12:06,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:06,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227196755] [2020-10-14 05:12:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:06,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:06,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:06,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:06,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:12:06,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:06,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:12:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:06,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:06,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:06,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:06,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:06,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:06,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:06,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:06,565 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 05:12:06,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227196755] [2020-10-14 05:12:06,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:06,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:06,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392138471] [2020-10-14 05:12:06,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:06,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:06,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:06,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:06,571 INFO L87 Difference]: Start difference. First operand 7304 states and 9350 transitions. Second operand 3 states. [2020-10-14 05:12:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:06,687 INFO L93 Difference]: Finished difference Result 8076 states and 10632 transitions. [2020-10-14 05:12:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:06,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:06,702 INFO L225 Difference]: With dead ends: 8076 [2020-10-14 05:12:06,702 INFO L226 Difference]: Without dead ends: 8074 [2020-10-14 05:12:06,705 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 05:12:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2020-10-14 05:12:06,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 7304. [2020-10-14 05:12:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7304 states. [2020-10-14 05:12:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 9222 transitions. [2020-10-14 05:12:06,932 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 9222 transitions. Word has length 27 [2020-10-14 05:12:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:06,932 INFO L479 AbstractCegarLoop]: Abstraction has 7304 states and 9222 transitions. [2020-10-14 05:12:06,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 9222 transitions. [2020-10-14 05:12:06,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:12:06,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:06,942 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 05:12:06,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:12:06,942 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash 715001129, now seen corresponding path program 1 times [2020-10-14 05:12:06,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:06,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736115791] [2020-10-14 05:12:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:06,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:12:06,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:06,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:12:06,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:06,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:12:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:06,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:06,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:06,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:06,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:06,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:06,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:06,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:06,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:06,997 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 05:12:06,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736115791] [2020-10-14 05:12:06,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:06,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:06,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381778551] [2020-10-14 05:12:06,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:06,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:06,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:06,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:07,000 INFO L87 Difference]: Start difference. First operand 7304 states and 9222 transitions. Second operand 3 states. [2020-10-14 05:12:07,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:07,137 INFO L93 Difference]: Finished difference Result 12172 states and 15496 transitions. [2020-10-14 05:12:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:07,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 05:12:07,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:07,159 INFO L225 Difference]: With dead ends: 12172 [2020-10-14 05:12:07,159 INFO L226 Difference]: Without dead ends: 12170 [2020-10-14 05:12:07,164 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 05:12:07,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12170 states. [2020-10-14 05:12:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12170 to 11144. [2020-10-14 05:12:07,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11144 states. [2020-10-14 05:12:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11144 states to 11144 states and 13702 transitions. [2020-10-14 05:12:07,396 INFO L78 Accepts]: Start accepts. Automaton has 11144 states and 13702 transitions. Word has length 28 [2020-10-14 05:12:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:07,396 INFO L479 AbstractCegarLoop]: Abstraction has 11144 states and 13702 transitions. [2020-10-14 05:12:07,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 11144 states and 13702 transitions. [2020-10-14 05:12:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:12:07,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:07,417 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 05:12:07,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:12:07,417 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:07,418 INFO L82 PathProgramCache]: Analyzing trace with hash 128195115, now seen corresponding path program 1 times [2020-10-14 05:12:07,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:07,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144235256] [2020-10-14 05:12:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:07,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:07,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:07,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:12:07,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:12:07,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:07,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:12:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:07,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:07,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:07,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:07,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:07,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:07,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:07,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:07,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:07,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:07,478 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 05:12:07,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144235256] [2020-10-14 05:12:07,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:07,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:07,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565313452] [2020-10-14 05:12:07,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:07,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:07,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:07,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:07,481 INFO L87 Difference]: Start difference. First operand 11144 states and 13702 transitions. Second operand 3 states. [2020-10-14 05:12:07,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:07,698 INFO L93 Difference]: Finished difference Result 25228 states and 30856 transitions. [2020-10-14 05:12:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:07,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 05:12:07,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:07,821 INFO L225 Difference]: With dead ends: 25228 [2020-10-14 05:12:07,822 INFO L226 Difference]: Without dead ends: 14218 [2020-10-14 05:12:07,838 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 05:12:07,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14218 states. [2020-10-14 05:12:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14218 to 14216. [2020-10-14 05:12:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14216 states. [2020-10-14 05:12:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14216 states to 14216 states and 16902 transitions. [2020-10-14 05:12:08,174 INFO L78 Accepts]: Start accepts. Automaton has 14216 states and 16902 transitions. Word has length 28 [2020-10-14 05:12:08,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:08,175 INFO L479 AbstractCegarLoop]: Abstraction has 14216 states and 16902 transitions. [2020-10-14 05:12:08,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:08,175 INFO L276 IsEmpty]: Start isEmpty. Operand 14216 states and 16902 transitions. [2020-10-14 05:12:08,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:12:08,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:08,192 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 05:12:08,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:12:08,192 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:08,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:08,192 INFO L82 PathProgramCache]: Analyzing trace with hash 690414627, now seen corresponding path program 1 times [2020-10-14 05:12:08,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:08,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506033174] [2020-10-14 05:12:08,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:08,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:08,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:08,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:12:08,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:08,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:12:08,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:08,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 05:12:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:08,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:08,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:08,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:08,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:08,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:08,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:08,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:12:08,254 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 05:12:08,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506033174] [2020-10-14 05:12:08,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:08,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:08,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625762122] [2020-10-14 05:12:08,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:08,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:08,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:08,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:08,257 INFO L87 Difference]: Start difference. First operand 14216 states and 16902 transitions. Second operand 3 states. [2020-10-14 05:12:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:08,722 INFO L93 Difference]: Finished difference Result 23178 states and 27399 transitions. [2020-10-14 05:12:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:08,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 05:12:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:08,761 INFO L225 Difference]: With dead ends: 23178 [2020-10-14 05:12:08,762 INFO L226 Difference]: Without dead ends: 23176 [2020-10-14 05:12:08,767 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 05:12:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23176 states. [2020-10-14 05:12:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23176 to 22152. [2020-10-14 05:12:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22152 states. [2020-10-14 05:12:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22152 states to 22152 states and 25862 transitions. [2020-10-14 05:12:09,179 INFO L78 Accepts]: Start accepts. Automaton has 22152 states and 25862 transitions. Word has length 29 [2020-10-14 05:12:09,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:09,179 INFO L479 AbstractCegarLoop]: Abstraction has 22152 states and 25862 transitions. [2020-10-14 05:12:09,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:09,179 INFO L276 IsEmpty]: Start isEmpty. Operand 22152 states and 25862 transitions. [2020-10-14 05:12:09,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:12:09,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:09,213 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 05:12:09,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:12:09,213 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:09,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:09,214 INFO L82 PathProgramCache]: Analyzing trace with hash 103608613, now seen corresponding path program 1 times [2020-10-14 05:12:09,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:09,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182005823] [2020-10-14 05:12:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:09,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:09,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:09,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:12:09,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:09,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:12:09,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:09,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 05:12:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:12:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:09,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:09,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:09,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:09,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:09,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:09,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:09,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:09,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:09,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:09,276 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 05:12:09,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182005823] [2020-10-14 05:12:09,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:09,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:09,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36067530] [2020-10-14 05:12:09,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:09,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:09,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:09,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:09,278 INFO L87 Difference]: Start difference. First operand 22152 states and 25862 transitions. Second operand 3 states. [2020-10-14 05:12:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:10,149 INFO L93 Difference]: Finished difference Result 49800 states and 57606 transitions. [2020-10-14 05:12:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:10,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 05:12:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:10,150 INFO L225 Difference]: With dead ends: 49800 [2020-10-14 05:12:10,151 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:12:10,212 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 05:12:10,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:12:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:12:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:12:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:12:10,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-10-14 05:12:10,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:10,213 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:12:10,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:12:10,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:12:10,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 05:12:10,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:12:10,280 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:12:10,280 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:12:10,281 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:12:10,281 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:12:10,281 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:12:10,281 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:12:10,281 INFO L271 CegarLoopResult]: At program point L159(lines 5 163) the Hoare annotation is: true [2020-10-14 05:12:10,282 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 163) no Hoare annotation was computed. [2020-10-14 05:12:10,282 INFO L268 CegarLoopResult]: For program point L118-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,282 INFO L268 CegarLoopResult]: For program point L143-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,282 INFO L268 CegarLoopResult]: For program point L102-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,283 INFO L268 CegarLoopResult]: For program point L94-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,284 INFO L268 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-10-14 05:12:10,284 INFO L268 CegarLoopResult]: For program point L86-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,284 INFO L268 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-10-14 05:12:10,284 INFO L268 CegarLoopResult]: For program point L78-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,285 INFO L268 CegarLoopResult]: For program point L70-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,285 INFO L268 CegarLoopResult]: For program point L128-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,285 INFO L271 CegarLoopResult]: At program point L153-1(lines 39 158) the Hoare annotation is: true [2020-10-14 05:12:10,285 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 163) no Hoare annotation was computed. [2020-10-14 05:12:10,285 INFO L268 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-10-14 05:12:10,286 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 161) no Hoare annotation was computed. [2020-10-14 05:12:10,286 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 163) the Hoare annotation is: true [2020-10-14 05:12:10,286 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-10-14 05:12:10,286 INFO L264 CegarLoopResult]: At program point L154-1(lines 5 163) the Hoare annotation is: false [2020-10-14 05:12:10,286 INFO L268 CegarLoopResult]: For program point L113-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,287 INFO L268 CegarLoopResult]: For program point L138-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,287 INFO L268 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-10-14 05:12:10,287 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-10-14 05:12:10,287 INFO L268 CegarLoopResult]: For program point L98-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,287 INFO L268 CegarLoopResult]: For program point L123-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,288 INFO L268 CegarLoopResult]: For program point L90-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,288 INFO L268 CegarLoopResult]: For program point L148-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,288 INFO L268 CegarLoopResult]: For program point L82-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,288 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-10-14 05:12:10,288 INFO L268 CegarLoopResult]: For program point L74-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,289 INFO L268 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-10-14 05:12:10,289 INFO L268 CegarLoopResult]: For program point L66-2(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,289 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-10-14 05:12:10,289 INFO L268 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-10-14 05:12:10,289 INFO L268 CegarLoopResult]: For program point L108-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,290 INFO L268 CegarLoopResult]: For program point L133-1(lines 39 158) no Hoare annotation was computed. [2020-10-14 05:12:10,290 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-10-14 05:12:10,290 INFO L268 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-10-14 05:12:10,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:12:10 BoogieIcfgContainer [2020-10-14 05:12:10,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:12:10,313 INFO L168 Benchmark]: Toolchain (without parser) took 11812.50 ms. Allocated memory was 147.8 MB in the beginning and 586.2 MB in the end (delta: 438.3 MB). Free memory was 104.4 MB in the beginning and 462.0 MB in the end (delta: -357.6 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:10,314 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 05:12:10,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.45 ms. Allocated memory is still 147.8 MB. Free memory was 104.4 MB in the beginning and 93.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:10,326 INFO L168 Benchmark]: Boogie Preprocessor took 128.96 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 93.2 MB in the beginning and 182.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:10,326 INFO L168 Benchmark]: RCFGBuilder took 375.26 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 162.2 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:10,327 INFO L168 Benchmark]: TraceAbstraction took 10990.28 ms. Allocated memory was 204.5 MB in the beginning and 586.2 MB in the end (delta: 381.7 MB). Free memory was 162.2 MB in the beginning and 462.0 MB in the end (delta: -299.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:10,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.45 ms. Allocated memory is still 147.8 MB. Free memory was 104.4 MB in the beginning and 93.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.96 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 93.2 MB in the beginning and 182.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 375.26 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 162.2 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10990.28 ms. Allocated memory was 204.5 MB in the beginning and 586.2 MB in the end (delta: 381.7 MB). Free memory was 162.2 MB in the beginning and 462.0 MB in the end (delta: -299.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 161]: 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: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.8s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2279 SDtfs, 1099 SDslu, 1559 SDs, 0 SdLazy, 144 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22152occurred in iteration=26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 27 MinimizatonAttempts, 4122 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 1034 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 643 ConstructedInterpolants, 0 QuantifiedInterpolants, 30575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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...