/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:10:34,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:10:34,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:10:34,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:10:34,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:10:34,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:10:34,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:10:34,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:10:34,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:10:34,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:10:34,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:10:34,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:10:34,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:10:34,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:10:34,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:10:34,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:10:34,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:10:34,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:10:34,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:10:34,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:10:34,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:10:34,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:10:34,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:10:34,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:10:34,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:10:34,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:10:34,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:10:34,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:10:34,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:10:34,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:10:34,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:10:34,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:10:34,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:10:34,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:10:34,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:10:34,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:10:34,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:10:34,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:10:34,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:10:34,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:10:34,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:10:34,486 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 [2020-10-28 12:10:34,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:10:34,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:10:34,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:10:34,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:10:34,548 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:10:34,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:10:34,548 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:10:34,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:10:34,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:10:34,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:10:34,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:10:34,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:10:34,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:10:34,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:10:34,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:10:34,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:10:34,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:10:34,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:10:34,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:10:34,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:10:34,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:10:34,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:10:34,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:10:34,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:10:34,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:10:34,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:10:34,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:10:34,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:10:34,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:10:34,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:10:35,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:10:35,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:10:35,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:10:35,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:10:35,051 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:10:35,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52.c [2020-10-28 12:10:35,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dee7cd60/3be593028cd84038a4706536e508fc31/FLAGef5c6c574 [2020-10-28 12:10:35,932 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:10:35,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label52.c [2020-10-28 12:10:35,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dee7cd60/3be593028cd84038a4706536e508fc31/FLAGef5c6c574 [2020-10-28 12:10:36,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dee7cd60/3be593028cd84038a4706536e508fc31 [2020-10-28 12:10:36,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:10:36,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:10:36,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:10:36,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:10:36,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:10:36,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:10:36" (1/1) ... [2020-10-28 12:10:36,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b33b144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:36, skipping insertion in model container [2020-10-28 12:10:36,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:10:36" (1/1) ... [2020-10-28 12:10:36,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:10:36,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:10:36,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:10:36,867 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:10:37,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:10:37,073 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:10:37,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:37 WrapperNode [2020-10-28 12:10:37,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:10:37,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:10:37,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:10:37,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:10:37,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:37" (1/1) ... [2020-10-28 12:10:37,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:37" (1/1) ... [2020-10-28 12:10:37,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:37" (1/1) ... [2020-10-28 12:10:37,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:37" (1/1) ... [2020-10-28 12:10:37,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:37" (1/1) ... [2020-10-28 12:10:37,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:37" (1/1) ... [2020-10-28 12:10:37,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:37" (1/1) ... [2020-10-28 12:10:37,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:10:37,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:10:37,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:10:37,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:10:37,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:37" (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 [2020-10-28 12:10:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:10:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:10:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:10:37,369 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:10:37,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:10:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:10:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:10:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:10:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:10:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:10:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:10:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:10:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:10:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:10:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:10:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:10:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:10:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:10:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:10:39,247 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:10:39,247 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:10:39,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:10:39 BoogieIcfgContainer [2020-10-28 12:10:39,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:10:39,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:10:39,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:10:39,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:10:39,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:10:36" (1/3) ... [2020-10-28 12:10:39,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fe72a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:10:39, skipping insertion in model container [2020-10-28 12:10:39,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:37" (2/3) ... [2020-10-28 12:10:39,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fe72a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:10:39, skipping insertion in model container [2020-10-28 12:10:39,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:10:39" (3/3) ... [2020-10-28 12:10:39,259 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label52.c [2020-10-28 12:10:39,271 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:10:39,277 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:10:39,291 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:10:39,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:10:39,323 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:10:39,323 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:10:39,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:10:39,323 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:10:39,323 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:10:39,323 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:10:39,323 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:10:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:10:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 12:10:39,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:39,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-28 12:10:39,362 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:39,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1635315794, now seen corresponding path program 1 times [2020-10-28 12:10:39,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:39,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859157922] [2020-10-28 12:10:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:40,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:40,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 12:10:40,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-28 12:10:40,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:40,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:10:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:10:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 12:10:40,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:10:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:40,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:40,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:40,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:40,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:10:40,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:40,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:40,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:40,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:40,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:10:40,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:10:40,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859157922] [2020-10-28 12:10:40,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:10:40,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:10:40,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921310854] [2020-10-28 12:10:40,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:10:40,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:40,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:10:40,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:10:40,586 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-28 12:10:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:45,221 INFO L93 Difference]: Finished difference Result 1029 states and 1821 transitions. [2020-10-28 12:10:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:10:45,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-28 12:10:45,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:45,257 INFO L225 Difference]: With dead ends: 1029 [2020-10-28 12:10:45,258 INFO L226 Difference]: Without dead ends: 633 [2020-10-28 12:10:45,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-10-28 12:10:45,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 621. [2020-10-28 12:10:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-28 12:10:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 862 transitions. [2020-10-28 12:10:45,391 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 862 transitions. Word has length 59 [2020-10-28 12:10:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:45,393 INFO L481 AbstractCegarLoop]: Abstraction has 621 states and 862 transitions. [2020-10-28 12:10:45,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:10:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 862 transitions. [2020-10-28 12:10:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 12:10:45,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:45,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:45,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:10:45,410 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:45,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:45,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2098037421, now seen corresponding path program 1 times [2020-10-28 12:10:45,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:45,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753740610] [2020-10-28 12:10:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:45,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:46,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 12:10:47,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:10:47,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-10-28 12:10:47,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:10:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:10:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:10:47,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:47,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:47,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:10:47,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:47,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:47,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:10:47,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:10:47,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:10:47,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:47,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 12:10:47,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:10:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:10:48,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753740610] [2020-10-28 12:10:48,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:10:48,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:10:48,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792398285] [2020-10-28 12:10:48,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:10:48,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:48,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:10:48,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:10:48,050 INFO L87 Difference]: Start difference. First operand 621 states and 862 transitions. Second operand 8 states. [2020-10-28 12:10:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:52,721 INFO L93 Difference]: Finished difference Result 2433 states and 3476 transitions. [2020-10-28 12:10:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:10:52,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-10-28 12:10:52,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:52,741 INFO L225 Difference]: With dead ends: 2433 [2020-10-28 12:10:52,741 INFO L226 Difference]: Without dead ends: 1818 [2020-10-28 12:10:52,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:10:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2020-10-28 12:10:52,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1778. [2020-10-28 12:10:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1778 states. [2020-10-28 12:10:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2414 transitions. [2020-10-28 12:10:52,829 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2414 transitions. Word has length 131 [2020-10-28 12:10:52,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:52,830 INFO L481 AbstractCegarLoop]: Abstraction has 1778 states and 2414 transitions. [2020-10-28 12:10:52,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:10:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2414 transitions. [2020-10-28 12:10:52,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 12:10:52,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:52,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:52,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:10:52,834 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:52,834 INFO L82 PathProgramCache]: Analyzing trace with hash 228589847, now seen corresponding path program 1 times [2020-10-28 12:10:52,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:52,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230985772] [2020-10-28 12:10:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:52,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:55,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:55,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 12:10:55,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:10:55,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2138 [2020-10-28 12:10:55,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:55,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:55,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:10:55,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:10:55,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:10:55,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:55,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:55,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:55,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:55,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:55,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:55,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:10:55,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:55,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:10:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:55,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:55,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:55,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:10:55,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:55,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 12:10:55,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:55,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:55,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:55,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:10:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:10:55,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230985772] [2020-10-28 12:10:55,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:10:55,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:10:55,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781463151] [2020-10-28 12:10:55,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:55,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:55,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:55,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:55,582 INFO L87 Difference]: Start difference. First operand 1778 states and 2414 transitions. Second operand 7 states. [2020-10-28 12:10:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:59,188 INFO L93 Difference]: Finished difference Result 3979 states and 5499 transitions. [2020-10-28 12:10:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:10:59,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-28 12:10:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:59,202 INFO L225 Difference]: With dead ends: 3979 [2020-10-28 12:10:59,203 INFO L226 Difference]: Without dead ends: 2207 [2020-10-28 12:10:59,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:10:59,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2020-10-28 12:10:59,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1803. [2020-10-28 12:10:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1803 states. [2020-10-28 12:10:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2363 transitions. [2020-10-28 12:10:59,297 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2363 transitions. Word has length 133 [2020-10-28 12:10:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:59,300 INFO L481 AbstractCegarLoop]: Abstraction has 1803 states and 2363 transitions. [2020-10-28 12:10:59,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2363 transitions. [2020-10-28 12:10:59,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-28 12:10:59,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:59,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:59,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:10:59,313 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:59,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:59,314 INFO L82 PathProgramCache]: Analyzing trace with hash -38162183, now seen corresponding path program 1 times [2020-10-28 12:10:59,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:59,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733619184] [2020-10-28 12:10:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:00,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 12:11:00,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:00,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1326 [2020-10-28 12:11:00,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:00,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:11:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 12:11:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:00,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:00,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:11:00,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:00,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:00,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:01,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:01,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:11:01,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 12:11:01,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:01,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:11:01,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:11:01,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733619184] [2020-10-28 12:11:01,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:01,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:11:01,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669447363] [2020-10-28 12:11:01,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:11:01,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:01,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:11:01,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:11:01,169 INFO L87 Difference]: Start difference. First operand 1803 states and 2363 transitions. Second operand 5 states. [2020-10-28 12:11:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:03,856 INFO L93 Difference]: Finished difference Result 4382 states and 6019 transitions. [2020-10-28 12:11:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:11:03,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-28 12:11:03,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:03,880 INFO L225 Difference]: With dead ends: 4382 [2020-10-28 12:11:03,880 INFO L226 Difference]: Without dead ends: 2585 [2020-10-28 12:11:03,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2020-10-28 12:11:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2573. [2020-10-28 12:11:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-10-28 12:11:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3366 transitions. [2020-10-28 12:11:03,983 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3366 transitions. Word has length 175 [2020-10-28 12:11:03,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:03,985 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 3366 transitions. [2020-10-28 12:11:03,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:11:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3366 transitions. [2020-10-28 12:11:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-28 12:11:03,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:03,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:03,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:11:03,989 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:03,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:03,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1480413402, now seen corresponding path program 1 times [2020-10-28 12:11:03,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:03,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325288426] [2020-10-28 12:11:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:04,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:04,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:04,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-28 12:11:04,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:04,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-28 12:11:04,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:04,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:11:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 12:11:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:04,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:04,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:04,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:04,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:11:04,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:04,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:04,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:04,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:04,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:04,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:04,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:11:04,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:04,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:11:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:11:04,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325288426] [2020-10-28 12:11:04,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:04,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:11:04,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511116478] [2020-10-28 12:11:04,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:11:04,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:04,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:11:04,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:11:04,937 INFO L87 Difference]: Start difference. First operand 2573 states and 3366 transitions. Second operand 5 states. [2020-10-28 12:11:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:07,680 INFO L93 Difference]: Finished difference Result 6160 states and 8331 transitions. [2020-10-28 12:11:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:11:07,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-28 12:11:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:07,714 INFO L225 Difference]: With dead ends: 6160 [2020-10-28 12:11:07,714 INFO L226 Difference]: Without dead ends: 3593 [2020-10-28 12:11:07,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:07,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2020-10-28 12:11:07,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3568. [2020-10-28 12:11:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3568 states. [2020-10-28 12:11:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 4764 transitions. [2020-10-28 12:11:07,843 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 4764 transitions. Word has length 190 [2020-10-28 12:11:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:07,844 INFO L481 AbstractCegarLoop]: Abstraction has 3568 states and 4764 transitions. [2020-10-28 12:11:07,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:11:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 4764 transitions. [2020-10-28 12:11:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-28 12:11:07,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:07,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:07,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:11:07,851 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:07,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1287919454, now seen corresponding path program 1 times [2020-10-28 12:11:07,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:07,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718363506] [2020-10-28 12:11:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:07,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:08,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:08,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:10,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:10,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 12:11:10,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:10,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2594 [2020-10-28 12:11:10,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:10,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:11:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:11:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:10,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:10,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:10,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:11:10,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:10,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:10,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:10,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:10,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:11:10,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:11:10,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:10,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:11:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:11,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:11:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:11,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:11,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:11:11,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 12:11:11,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:11,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:11:11,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:11,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718363506] [2020-10-28 12:11:11,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:11,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:11,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260820818] [2020-10-28 12:11:11,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:11,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:11,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:11,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:11,408 INFO L87 Difference]: Start difference. First operand 3568 states and 4764 transitions. Second operand 7 states. [2020-10-28 12:11:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:15,032 INFO L93 Difference]: Finished difference Result 7823 states and 10917 transitions. [2020-10-28 12:11:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:11:15,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-28 12:11:15,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:15,063 INFO L225 Difference]: With dead ends: 7823 [2020-10-28 12:11:15,063 INFO L226 Difference]: Without dead ends: 4261 [2020-10-28 12:11:15,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:11:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2020-10-28 12:11:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 4157. [2020-10-28 12:11:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4157 states. [2020-10-28 12:11:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 5453 transitions. [2020-10-28 12:11:15,268 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 5453 transitions. Word has length 249 [2020-10-28 12:11:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:15,269 INFO L481 AbstractCegarLoop]: Abstraction has 4157 states and 5453 transitions. [2020-10-28 12:11:15,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 5453 transitions. [2020-10-28 12:11:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-28 12:11:15,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:15,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:15,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:11:15,275 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:15,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:15,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2037557686, now seen corresponding path program 1 times [2020-10-28 12:11:15,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:15,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936898922] [2020-10-28 12:11:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:15,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:16,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-28 12:11:16,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-10-28 12:11:16,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:16,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:11:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 12:11:16,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:16,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:16,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:11:16,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:16,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:16,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:16,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:16,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:11:16,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:16,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:11:16,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:16,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:16,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:16,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:16,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:16,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:11:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:16,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:16,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:11:16,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:11:16,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:16,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:11:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:11:16,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936898922] [2020-10-28 12:11:16,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:16,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:11:16,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119770375] [2020-10-28 12:11:16,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:11:16,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:16,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:11:16,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:11:16,587 INFO L87 Difference]: Start difference. First operand 4157 states and 5453 transitions. Second operand 5 states. [2020-10-28 12:11:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:19,762 INFO L93 Difference]: Finished difference Result 9304 states and 12402 transitions. [2020-10-28 12:11:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:11:19,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-28 12:11:19,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:19,789 INFO L225 Difference]: With dead ends: 9304 [2020-10-28 12:11:19,789 INFO L226 Difference]: Without dead ends: 5153 [2020-10-28 12:11:19,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5153 states. [2020-10-28 12:11:19,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5153 to 5116. [2020-10-28 12:11:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5116 states. [2020-10-28 12:11:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 6836 transitions. [2020-10-28 12:11:19,966 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 6836 transitions. Word has length 259 [2020-10-28 12:11:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:19,967 INFO L481 AbstractCegarLoop]: Abstraction has 5116 states and 6836 transitions. [2020-10-28 12:11:19,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:11:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 6836 transitions. [2020-10-28 12:11:19,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-28 12:11:19,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:19,974 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:19,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:11:19,974 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:19,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1508545154, now seen corresponding path program 1 times [2020-10-28 12:11:19,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:19,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019023778] [2020-10-28 12:11:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:20,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:22,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:22,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-28 12:11:22,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1986 [2020-10-28 12:11:22,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:22,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:11:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:11:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:22,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:22,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:22,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:22,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:22,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:11:22,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:22,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:22,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:22,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:11:22,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:22,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:11:22,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:22,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:11:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:22,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:11:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:22,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:22,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:22,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:11:22,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:11:22,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:22,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:11:22,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:22,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019023778] [2020-10-28 12:11:22,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:22,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:22,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639622979] [2020-10-28 12:11:22,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:22,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:22,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:22,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:22,778 INFO L87 Difference]: Start difference. First operand 5116 states and 6836 transitions. Second operand 7 states. [2020-10-28 12:11:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:27,369 INFO L93 Difference]: Finished difference Result 12571 states and 17506 transitions. [2020-10-28 12:11:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:11:27,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-28 12:11:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:27,408 INFO L225 Difference]: With dead ends: 12571 [2020-10-28 12:11:27,408 INFO L226 Difference]: Without dead ends: 7461 [2020-10-28 12:11:27,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:27,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7461 states. [2020-10-28 12:11:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7461 to 7063. [2020-10-28 12:11:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7063 states. [2020-10-28 12:11:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9494 transitions. [2020-10-28 12:11:27,663 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9494 transitions. Word has length 265 [2020-10-28 12:11:27,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:27,663 INFO L481 AbstractCegarLoop]: Abstraction has 7063 states and 9494 transitions. [2020-10-28 12:11:27,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9494 transitions. [2020-10-28 12:11:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-28 12:11:27,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:27,672 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:27,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:11:27,672 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:27,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:27,673 INFO L82 PathProgramCache]: Analyzing trace with hash 350967757, now seen corresponding path program 1 times [2020-10-28 12:11:27,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:27,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751890668] [2020-10-28 12:11:27,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:32,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:32,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:32,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-28 12:11:32,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:11:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 12:11:32,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:32,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:11:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:11:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:32,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:32,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:32,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:32,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:32,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:32,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:11:32,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:32,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:32,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:11:32,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:33,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:33,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:33,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:11:33,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:33,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:11:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:11:33,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:11:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:33,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:33,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:11:33,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:33,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:11:33,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:33,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:11:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-28 12:11:33,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751890668] [2020-10-28 12:11:33,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:33,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:11:33,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984555596] [2020-10-28 12:11:33,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:11:33,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:33,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:11:33,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:11:33,243 INFO L87 Difference]: Start difference. First operand 7063 states and 9494 transitions. Second operand 5 states. [2020-10-28 12:11:35,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:35,629 INFO L93 Difference]: Finished difference Result 13312 states and 17984 transitions. [2020-10-28 12:11:35,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:11:35,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-28 12:11:35,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:35,655 INFO L225 Difference]: With dead ends: 13312 [2020-10-28 12:11:35,656 INFO L226 Difference]: Without dead ends: 6443 [2020-10-28 12:11:35,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:35,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6443 states. [2020-10-28 12:11:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6443 to 6248. [2020-10-28 12:11:35,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6248 states. [2020-10-28 12:11:35,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 7876 transitions. [2020-10-28 12:11:35,820 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 7876 transitions. Word has length 270 [2020-10-28 12:11:35,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:35,821 INFO L481 AbstractCegarLoop]: Abstraction has 6248 states and 7876 transitions. [2020-10-28 12:11:35,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:11:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 7876 transitions. [2020-10-28 12:11:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-28 12:11:35,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:35,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:35,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:11:35,833 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:35,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:35,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1277145302, now seen corresponding path program 1 times [2020-10-28 12:11:35,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:35,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177585438] [2020-10-28 12:11:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-28 12:11:37,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:37,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1589 [2020-10-28 12:11:37,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:37,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:37,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:37,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:37,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:11:37,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:37,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:37,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:37,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:11:37,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:37,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:11:37,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:37,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:37,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:37,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:11:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:11:37,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:37,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:11:37,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:11:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-28 12:11:37,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177585438] [2020-10-28 12:11:37,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:37,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:11:37,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038086714] [2020-10-28 12:11:37,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:11:37,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:37,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:11:37,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:11:37,997 INFO L87 Difference]: Start difference. First operand 6248 states and 7876 transitions. Second operand 5 states. [2020-10-28 12:11:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:41,354 INFO L93 Difference]: Finished difference Result 12503 states and 15780 transitions. [2020-10-28 12:11:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:11:41,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2020-10-28 12:11:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:41,377 INFO L225 Difference]: With dead ends: 12503 [2020-10-28 12:11:41,377 INFO L226 Difference]: Without dead ends: 6261 [2020-10-28 12:11:41,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2020-10-28 12:11:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 6058. [2020-10-28 12:11:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6058 states. [2020-10-28 12:11:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6058 states to 6058 states and 7457 transitions. [2020-10-28 12:11:41,553 INFO L78 Accepts]: Start accepts. Automaton has 6058 states and 7457 transitions. Word has length 286 [2020-10-28 12:11:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:41,553 INFO L481 AbstractCegarLoop]: Abstraction has 6058 states and 7457 transitions. [2020-10-28 12:11:41,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:11:41,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6058 states and 7457 transitions. [2020-10-28 12:11:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-28 12:11:41,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:41,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-28 12:11:41,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:11:41,569 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:41,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:41,570 INFO L82 PathProgramCache]: Analyzing trace with hash -778924374, now seen corresponding path program 1 times [2020-10-28 12:11:41,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:41,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259542219] [2020-10-28 12:11:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:44,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:44,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-28 12:11:44,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:44,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2913 [2020-10-28 12:11:44,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:44,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:11:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-28 12:11:44,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:44,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:44,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:44,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:44,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:44,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:11:44,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:44,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:44,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:44,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:11:44,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:44,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 12:11:44,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:44,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:11:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:44,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:11:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:45,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:45,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:11:45,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:45,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-28 12:11:45,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:45,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 12:11:45,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:45,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259542219] [2020-10-28 12:11:45,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:45,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:45,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524110902] [2020-10-28 12:11:45,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:45,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:45,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:45,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:45,497 INFO L87 Difference]: Start difference. First operand 6058 states and 7457 transitions. Second operand 7 states. [2020-10-28 12:11:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:48,920 INFO L93 Difference]: Finished difference Result 12548 states and 15439 transitions. [2020-10-28 12:11:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:11:48,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-28 12:11:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:48,942 INFO L225 Difference]: With dead ends: 12548 [2020-10-28 12:11:48,942 INFO L226 Difference]: Without dead ends: 6496 [2020-10-28 12:11:48,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:48,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6496 states. [2020-10-28 12:11:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6496 to 6486. [2020-10-28 12:11:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6486 states. [2020-10-28 12:11:49,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6486 states to 6486 states and 7783 transitions. [2020-10-28 12:11:49,114 INFO L78 Accepts]: Start accepts. Automaton has 6486 states and 7783 transitions. Word has length 351 [2020-10-28 12:11:49,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:49,115 INFO L481 AbstractCegarLoop]: Abstraction has 6486 states and 7783 transitions. [2020-10-28 12:11:49,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:49,115 INFO L276 IsEmpty]: Start isEmpty. Operand 6486 states and 7783 transitions. [2020-10-28 12:11:49,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-28 12:11:49,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:49,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:49,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:11:49,131 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:49,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1935110388, now seen corresponding path program 1 times [2020-10-28 12:11:49,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:49,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168406036] [2020-10-28 12:11:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:51,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:51,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-28 12:11:51,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2645 [2020-10-28 12:11:51,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:51,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:11:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:11:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-28 12:11:51,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:52,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:52,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:52,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:52,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:11:52,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:52,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:52,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:52,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:52,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:52,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:52,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:11:52,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 12:11:52,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:52,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:11:52,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:52,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:11:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:52,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:52,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:52,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:11:52,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:52,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 12:11:52,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:52,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:11:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 12:11:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 197 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:52,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168406036] [2020-10-28 12:11:52,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:52,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:11:52,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205687725] [2020-10-28 12:11:52,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:11:52,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:52,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:11:52,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:11:52,691 INFO L87 Difference]: Start difference. First operand 6486 states and 7783 transitions. Second operand 8 states. [2020-10-28 12:11:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:58,000 INFO L93 Difference]: Finished difference Result 15090 states and 18286 transitions. [2020-10-28 12:11:58,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:11:58,007 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 372 [2020-10-28 12:11:58,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:58,036 INFO L225 Difference]: With dead ends: 15090 [2020-10-28 12:11:58,036 INFO L226 Difference]: Without dead ends: 8798 [2020-10-28 12:11:58,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:11:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8798 states. [2020-10-28 12:11:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8798 to 8406. [2020-10-28 12:11:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8406 states. [2020-10-28 12:11:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8406 states to 8406 states and 10049 transitions. [2020-10-28 12:11:58,267 INFO L78 Accepts]: Start accepts. Automaton has 8406 states and 10049 transitions. Word has length 372 [2020-10-28 12:11:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:58,268 INFO L481 AbstractCegarLoop]: Abstraction has 8406 states and 10049 transitions. [2020-10-28 12:11:58,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:11:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 8406 states and 10049 transitions. [2020-10-28 12:11:58,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-28 12:11:58,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:58,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:58,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:11:58,299 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:58,300 INFO L82 PathProgramCache]: Analyzing trace with hash 912637399, now seen corresponding path program 1 times [2020-10-28 12:11:58,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:58,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470864340] [2020-10-28 12:11:58,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:58,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:03,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:03,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-28 12:12:03,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4607 [2020-10-28 12:12:03,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:03,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:12:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:12:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:03,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:03,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:03,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:03,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:12:03,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:03,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:03,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:03,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:03,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:03,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:12:03,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:03,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 12:12:03,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:03,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:03,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:03,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:03,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:12:03,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:03,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:12:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:03,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:03,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:03,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:03,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 12:12:03,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:03,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:12:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:03,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-28 12:12:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:03,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:03,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:03,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:03,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 12:12:03,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:03,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:03,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 263 proven. 108 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:12:04,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470864340] [2020-10-28 12:12:04,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:04,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:04,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310295297] [2020-10-28 12:12:04,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:04,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:04,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:04,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:04,096 INFO L87 Difference]: Start difference. First operand 8406 states and 10049 transitions. Second operand 7 states. [2020-10-28 12:12:07,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:07,104 INFO L93 Difference]: Finished difference Result 17404 states and 20857 transitions. [2020-10-28 12:12:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:12:07,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 460 [2020-10-28 12:12:07,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:07,123 INFO L225 Difference]: With dead ends: 17404 [2020-10-28 12:12:07,123 INFO L226 Difference]: Without dead ends: 9194 [2020-10-28 12:12:07,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:12:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9194 states. [2020-10-28 12:12:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9194 to 9178. [2020-10-28 12:12:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9178 states. [2020-10-28 12:12:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9178 states to 9178 states and 10883 transitions. [2020-10-28 12:12:07,337 INFO L78 Accepts]: Start accepts. Automaton has 9178 states and 10883 transitions. Word has length 460 [2020-10-28 12:12:07,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:07,338 INFO L481 AbstractCegarLoop]: Abstraction has 9178 states and 10883 transitions. [2020-10-28 12:12:07,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:07,338 INFO L276 IsEmpty]: Start isEmpty. Operand 9178 states and 10883 transitions. [2020-10-28 12:12:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-28 12:12:07,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:07,382 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:07,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:12:07,382 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:07,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1830337450, now seen corresponding path program 1 times [2020-10-28 12:12:07,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:07,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933049690] [2020-10-28 12:12:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:10,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:10,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-28 12:12:10,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2897 [2020-10-28 12:12:10,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:10,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:12:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:12:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:10,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:10,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:10,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:10,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:10,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:10,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:12:10,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:10,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:10,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:10,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:10,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:10,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:10,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:10,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:12:10,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:10,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:10,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:10,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:10,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:12:10,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:12:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:10,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:11,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:11,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:11,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 12:12:11,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:11,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:12:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-28 12:12:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:11,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:11,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:11,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:11,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 12:12:11,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:11,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:11,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 263 proven. 108 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-28 12:12:11,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933049690] [2020-10-28 12:12:11,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:11,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:12:11,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107777255] [2020-10-28 12:12:11,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:12:11,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:11,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:12:11,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:12:11,699 INFO L87 Difference]: Start difference. First operand 9178 states and 10883 transitions. Second operand 8 states. [2020-10-28 12:12:15,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:15,971 INFO L93 Difference]: Finished difference Result 21157 states and 25613 transitions. [2020-10-28 12:12:15,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:12:15,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 465 [2020-10-28 12:12:15,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:16,008 INFO L225 Difference]: With dead ends: 21157 [2020-10-28 12:12:16,009 INFO L226 Difference]: Without dead ends: 12175 [2020-10-28 12:12:16,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:12:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12175 states. [2020-10-28 12:12:16,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12175 to 11704. [2020-10-28 12:12:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11704 states. [2020-10-28 12:12:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11704 states to 11704 states and 13833 transitions. [2020-10-28 12:12:16,292 INFO L78 Accepts]: Start accepts. Automaton has 11704 states and 13833 transitions. Word has length 465 [2020-10-28 12:12:16,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:16,292 INFO L481 AbstractCegarLoop]: Abstraction has 11704 states and 13833 transitions. [2020-10-28 12:12:16,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:12:16,293 INFO L276 IsEmpty]: Start isEmpty. Operand 11704 states and 13833 transitions. [2020-10-28 12:12:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-28 12:12:16,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:16,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:16,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:12:16,332 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:16,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:16,332 INFO L82 PathProgramCache]: Analyzing trace with hash -433191755, now seen corresponding path program 1 times [2020-10-28 12:12:16,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:16,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144200401] [2020-10-28 12:12:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:16,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:21,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:21,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-28 12:12:21,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4591 [2020-10-28 12:12:21,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:21,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:12:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:12:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:21,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:21,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:21,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:21,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:12:21,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:21,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:21,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:21,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:21,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:12:21,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:21,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:12:21,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:21,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:21,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:21,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:21,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:12:21,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:21,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:12:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:21,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:21,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:21,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:21,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:12:21,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:21,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:12:21,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-28 12:12:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:21,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:21,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:21,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:21,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 12:12:21,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:21,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:21,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 263 proven. 108 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-28 12:12:22,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144200401] [2020-10-28 12:12:22,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:22,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:22,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11346604] [2020-10-28 12:12:22,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:22,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:22,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:22,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:22,029 INFO L87 Difference]: Start difference. First operand 11704 states and 13833 transitions. Second operand 7 states. [2020-10-28 12:12:26,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:26,117 INFO L93 Difference]: Finished difference Result 24009 states and 28418 transitions. [2020-10-28 12:12:26,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:12:26,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 481 [2020-10-28 12:12:26,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:26,158 INFO L225 Difference]: With dead ends: 24009 [2020-10-28 12:12:26,158 INFO L226 Difference]: Without dead ends: 12501 [2020-10-28 12:12:26,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:12:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12501 states. [2020-10-28 12:12:26,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12501 to 12284. [2020-10-28 12:12:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12284 states. [2020-10-28 12:12:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12284 states to 12284 states and 14504 transitions. [2020-10-28 12:12:26,437 INFO L78 Accepts]: Start accepts. Automaton has 12284 states and 14504 transitions. Word has length 481 [2020-10-28 12:12:26,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:26,438 INFO L481 AbstractCegarLoop]: Abstraction has 12284 states and 14504 transitions. [2020-10-28 12:12:26,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:26,438 INFO L276 IsEmpty]: Start isEmpty. Operand 12284 states and 14504 transitions. [2020-10-28 12:12:26,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-28 12:12:26,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:26,484 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:26,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:12:26,484 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:26,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1896619342, now seen corresponding path program 1 times [2020-10-28 12:12:26,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:26,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785153297] [2020-10-28 12:12:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:26,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:29,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:29,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-28 12:12:29,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3338 [2020-10-28 12:12:29,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:29,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:12:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:12:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:30,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:12:30,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:12:30,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:12:30,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:12:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:12:30,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:30,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:12:30,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:12:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:12:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:30,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 12:12:30,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:12:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-28 12:12:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:30,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:30,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 12:12:30,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:30,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:30,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 404 proven. 108 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-28 12:12:31,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785153297] [2020-10-28 12:12:31,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:31,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:12:31,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63575492] [2020-10-28 12:12:31,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:12:31,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:31,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:12:31,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:12:31,068 INFO L87 Difference]: Start difference. First operand 12284 states and 14504 transitions. Second operand 8 states. [2020-10-28 12:12:33,732 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-28 12:12:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:36,713 INFO L93 Difference]: Finished difference Result 25759 states and 30431 transitions. [2020-10-28 12:12:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:12:36,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 534 [2020-10-28 12:12:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:36,749 INFO L225 Difference]: With dead ends: 25759 [2020-10-28 12:12:36,750 INFO L226 Difference]: Without dead ends: 13671 [2020-10-28 12:12:36,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:12:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13671 states. [2020-10-28 12:12:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13671 to 12690. [2020-10-28 12:12:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12690 states. [2020-10-28 12:12:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12690 states to 12690 states and 14676 transitions. [2020-10-28 12:12:37,203 INFO L78 Accepts]: Start accepts. Automaton has 12690 states and 14676 transitions. Word has length 534 [2020-10-28 12:12:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:37,204 INFO L481 AbstractCegarLoop]: Abstraction has 12690 states and 14676 transitions. [2020-10-28 12:12:37,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:12:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 12690 states and 14676 transitions. [2020-10-28 12:12:37,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-28 12:12:37,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:37,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:37,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:12:37,234 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:37,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1076231002, now seen corresponding path program 1 times [2020-10-28 12:12:37,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:37,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128098928] [2020-10-28 12:12:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:37,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:40,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:42,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:42,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-10-28 12:12:42,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:42,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 12:12:42,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:42,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:42,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:42,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:12:42,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:12:42,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:42,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:42,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:42,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:42,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:12:42,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:42,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:42,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:42,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:42,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:42,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:12:42,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:42,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:12:42,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:42,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:42,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:42,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:12:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:42,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:42,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:12:42,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:42,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 12:12:42,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:42,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:42,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:42,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:42,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:12:42,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:42,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:12:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:42,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:42,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:42,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:42,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 12:12:42,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:42,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:12:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:42,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:12:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:43,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:43,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:43,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 12:12:43,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:43,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 421 proven. 108 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-10-28 12:12:43,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128098928] [2020-10-28 12:12:43,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:43,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:43,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590940454] [2020-10-28 12:12:43,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:43,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:43,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:43,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:43,442 INFO L87 Difference]: Start difference. First operand 12690 states and 14676 transitions. Second operand 7 states. [2020-10-28 12:12:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:48,541 INFO L93 Difference]: Finished difference Result 27850 states and 32174 transitions. [2020-10-28 12:12:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:12:48,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 561 [2020-10-28 12:12:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:48,566 INFO L225 Difference]: With dead ends: 27850 [2020-10-28 12:12:48,566 INFO L226 Difference]: Without dead ends: 14782 [2020-10-28 12:12:48,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:12:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14782 states. [2020-10-28 12:12:48,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14782 to 12306. [2020-10-28 12:12:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12306 states. [2020-10-28 12:12:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12306 states to 12306 states and 14164 transitions. [2020-10-28 12:12:48,850 INFO L78 Accepts]: Start accepts. Automaton has 12306 states and 14164 transitions. Word has length 561 [2020-10-28 12:12:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:48,851 INFO L481 AbstractCegarLoop]: Abstraction has 12306 states and 14164 transitions. [2020-10-28 12:12:48,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 12306 states and 14164 transitions. [2020-10-28 12:12:48,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-28 12:12:48,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:48,872 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:48,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:12:48,873 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:48,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1140351054, now seen corresponding path program 1 times [2020-10-28 12:12:48,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:48,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195511849] [2020-10-28 12:12:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:49,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:49,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-28 12:12:53,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:53,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4150 [2020-10-28 12:12:53,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-28 12:12:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:12:53,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:53,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:53,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:12:53,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:53,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:12:53,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:53,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:12:53,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:12:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:12:53,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:12:53,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 12:12:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-28 12:12:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:53,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:53,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 12:12:53,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:12:53,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-28 12:12:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:53,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:12:53,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 392 proven. 108 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2020-10-28 12:12:54,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195511849] [2020-10-28 12:12:54,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:54,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:54,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739063005] [2020-10-28 12:12:54,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:54,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:54,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:54,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:54,219 INFO L87 Difference]: Start difference. First operand 12306 states and 14164 transitions. Second operand 7 states. [2020-10-28 12:12:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:57,905 INFO L93 Difference]: Finished difference Result 24825 states and 28595 transitions. [2020-10-28 12:12:57,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:12:57,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 577 [2020-10-28 12:12:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:57,926 INFO L225 Difference]: With dead ends: 24825 [2020-10-28 12:12:57,926 INFO L226 Difference]: Without dead ends: 12331 [2020-10-28 12:12:57,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:12:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2020-10-28 12:12:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 12118. [2020-10-28 12:12:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12118 states. [2020-10-28 12:12:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 13849 transitions. [2020-10-28 12:12:58,171 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 13849 transitions. Word has length 577 [2020-10-28 12:12:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:58,172 INFO L481 AbstractCegarLoop]: Abstraction has 12118 states and 13849 transitions. [2020-10-28 12:12:58,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 13849 transitions. [2020-10-28 12:12:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-28 12:12:58,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:58,192 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:58,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:12:58,193 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:58,193 INFO L82 PathProgramCache]: Analyzing trace with hash -106772685, now seen corresponding path program 1 times [2020-10-28 12:12:58,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:58,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764501700] [2020-10-28 12:12:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:58,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:58,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:59,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 621 [2020-10-28 12:13:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:13:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2637 [2020-10-28 12:13:00,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:13:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:13:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:01,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:01,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:01,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:01,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:13:01,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:01,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:01,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:01,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:01,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:13:01,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:13:01,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:01,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:13:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:01,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:01,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:13:01,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:01,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:13:01,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:01,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:13:01,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:13:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:01,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:01,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:13:01,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 12:13:01,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:01,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:13:01,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-28 12:13:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:01,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:01,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:01,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:13:01,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:13:01,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:01,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:13:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:01,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 429 proven. 108 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-28 12:13:02,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764501700] [2020-10-28 12:13:02,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:02,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:02,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124304565] [2020-10-28 12:13:02,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:02,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:02,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:02,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:02,083 INFO L87 Difference]: Start difference. First operand 12118 states and 13849 transitions. Second operand 7 states. [2020-10-28 12:13:02,949 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-28 12:13:05,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:05,953 INFO L93 Difference]: Finished difference Result 24122 states and 27726 transitions. [2020-10-28 12:13:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:13:05,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 603 [2020-10-28 12:13:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:05,979 INFO L225 Difference]: With dead ends: 24122 [2020-10-28 12:13:05,980 INFO L226 Difference]: Without dead ends: 12200 [2020-10-28 12:13:05,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:13:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12200 states. [2020-10-28 12:13:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12200 to 12122. [2020-10-28 12:13:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12122 states. [2020-10-28 12:13:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12122 states to 12122 states and 13834 transitions. [2020-10-28 12:13:06,209 INFO L78 Accepts]: Start accepts. Automaton has 12122 states and 13834 transitions. Word has length 603 [2020-10-28 12:13:06,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:06,210 INFO L481 AbstractCegarLoop]: Abstraction has 12122 states and 13834 transitions. [2020-10-28 12:13:06,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 12122 states and 13834 transitions. [2020-10-28 12:13:06,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2020-10-28 12:13:06,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:06,231 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:06,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:13:06,232 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:06,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:06,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1810955263, now seen corresponding path program 1 times [2020-10-28 12:13:06,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:06,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122291713] [2020-10-28 12:13:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:06,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:06,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:11,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 641 [2020-10-28 12:13:11,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:13:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 12:13:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:11,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:13:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 12:13:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:11,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:11,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:11,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:11,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:11,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:13:11,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:11,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:11,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:11,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:11,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:13:11,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:13:11,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:11,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:11,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:13:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:11,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:13:11,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:13:11,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:11,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:13:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:11,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:13:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:11,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:11,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:13:11,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:11,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:13:11,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:11,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:13:11,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-28 12:13:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:12,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:12,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:13:12,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 12:13:12,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:12,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:12,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:12,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:13:12,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-28 12:13:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:12,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:12,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:13:12,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:13:12,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:12,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:13:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 626 proven. 194 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2020-10-28 12:13:12,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122291713] [2020-10-28 12:13:12,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:12,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:12,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281538379] [2020-10-28 12:13:12,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:12,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:12,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:12,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:12,716 INFO L87 Difference]: Start difference. First operand 12122 states and 13834 transitions. Second operand 7 states. [2020-10-28 12:13:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:17,415 INFO L93 Difference]: Finished difference Result 24636 states and 28101 transitions. [2020-10-28 12:13:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:13:17,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 621 [2020-10-28 12:13:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:17,440 INFO L225 Difference]: With dead ends: 24636 [2020-10-28 12:13:17,441 INFO L226 Difference]: Without dead ends: 12324 [2020-10-28 12:13:17,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:13:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12324 states. [2020-10-28 12:13:17,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12324 to 11924. [2020-10-28 12:13:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11924 states. [2020-10-28 12:13:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11924 states to 11924 states and 13565 transitions. [2020-10-28 12:13:17,626 INFO L78 Accepts]: Start accepts. Automaton has 11924 states and 13565 transitions. Word has length 621 [2020-10-28 12:13:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:17,627 INFO L481 AbstractCegarLoop]: Abstraction has 11924 states and 13565 transitions. [2020-10-28 12:13:17,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 11924 states and 13565 transitions. [2020-10-28 12:13:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2020-10-28 12:13:17,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:17,647 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:17,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:13:17,648 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:17,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:17,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1642015362, now seen corresponding path program 1 times [2020-10-28 12:13:17,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:17,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373467736] [2020-10-28 12:13:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:17,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:19,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:22,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:22,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 639 [2020-10-28 12:13:22,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:13:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 12:13:22,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:22,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:13:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-28 12:13:22,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:22,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:22,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:22,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:22,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:22,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:13:22,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:22,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:22,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:22,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:23,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:23,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:13:23,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:23,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 12:13:23,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:23,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:13:23,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:23,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:13:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:23,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:23,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:23,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:13:23,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:23,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 12:13:23,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:23,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 12:13:23,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:23,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-28 12:13:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:23,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:23,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:13:23,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:13:23,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:23,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:13:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:23,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-28 12:13:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:13:23,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:13:23,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:23,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:13:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 431 proven. 273 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-28 12:13:24,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373467736] [2020-10-28 12:13:24,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:24,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:13:24,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405318525] [2020-10-28 12:13:24,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:13:24,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:24,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:13:24,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:13:24,085 INFO L87 Difference]: Start difference. First operand 11924 states and 13565 transitions. Second operand 8 states. [2020-10-28 12:13:28,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:28,494 INFO L93 Difference]: Finished difference Result 23855 states and 27138 transitions. [2020-10-28 12:13:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:13:28,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 621 [2020-10-28 12:13:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:28,514 INFO L225 Difference]: With dead ends: 23855 [2020-10-28 12:13:28,514 INFO L226 Difference]: Without dead ends: 12127 [2020-10-28 12:13:28,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:13:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12127 states. [2020-10-28 12:13:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12127 to 11920. [2020-10-28 12:13:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11920 states. [2020-10-28 12:13:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11920 states to 11920 states and 13548 transitions. [2020-10-28 12:13:28,690 INFO L78 Accepts]: Start accepts. Automaton has 11920 states and 13548 transitions. Word has length 621 [2020-10-28 12:13:28,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:28,691 INFO L481 AbstractCegarLoop]: Abstraction has 11920 states and 13548 transitions. [2020-10-28 12:13:28,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:13:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11920 states and 13548 transitions. [2020-10-28 12:13:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2020-10-28 12:13:28,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:28,709 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:28,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:13:28,709 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:28,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:28,710 INFO L82 PathProgramCache]: Analyzing trace with hash -67693303, now seen corresponding path program 1 times [2020-10-28 12:13:28,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:28,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272304125] [2020-10-28 12:13:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:33,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:33,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 658 [2020-10-28 12:13:33,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:13:33,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4995 [2020-10-28 12:13:33,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:33,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-28 12:13:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:13:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:33,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:33,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:33,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:33,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:33,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:13:33,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:33,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:33,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:13:34,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:13:34,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:13:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:13:34,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:13:34,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:13:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 12:13:34,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 12:13:34,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:13:34,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-28 12:13:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:13:34,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 12:13:34,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:13:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-28 12:13:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:13:34,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:13:34,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:13:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 555 proven. 108 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2020-10-28 12:13:34,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272304125] [2020-10-28 12:13:34,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:34,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:34,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712008238] [2020-10-28 12:13:34,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:34,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:34,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:34,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:34,957 INFO L87 Difference]: Start difference. First operand 11920 states and 13548 transitions. Second operand 7 states. [2020-10-28 12:13:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:38,486 INFO L93 Difference]: Finished difference Result 24044 states and 27348 transitions. [2020-10-28 12:13:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:13:38,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 638 [2020-10-28 12:13:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:38,516 INFO L225 Difference]: With dead ends: 24044 [2020-10-28 12:13:38,516 INFO L226 Difference]: Without dead ends: 12320 [2020-10-28 12:13:38,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:13:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12320 states. [2020-10-28 12:13:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12320 to 11540. [2020-10-28 12:13:38,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11540 states. [2020-10-28 12:13:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11540 states to 11540 states and 13095 transitions. [2020-10-28 12:13:38,704 INFO L78 Accepts]: Start accepts. Automaton has 11540 states and 13095 transitions. Word has length 638 [2020-10-28 12:13:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:38,705 INFO L481 AbstractCegarLoop]: Abstraction has 11540 states and 13095 transitions. [2020-10-28 12:13:38,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 11540 states and 13095 transitions. [2020-10-28 12:13:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2020-10-28 12:13:38,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:38,726 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:38,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:13:38,726 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:38,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:38,727 INFO L82 PathProgramCache]: Analyzing trace with hash -451585360, now seen corresponding path program 1 times [2020-10-28 12:13:38,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:38,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738172943] [2020-10-28 12:13:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:39,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:43,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:43,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 681 [2020-10-28 12:13:43,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:13:43,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 12:13:43,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:43,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:13:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 339 [2020-10-28 12:13:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:13:43,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:44,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:44,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:44,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:44,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:13:44,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:44,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:44,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:44,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:44,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:44,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:13:44,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:13:44,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:44,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:13:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:44,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:44,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:44,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:13:44,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:13:44,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:44,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:44,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:44,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-28 12:13:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:44,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:44,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:44,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:13:44,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:44,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 12:13:44,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:44,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:44,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 12:13:44,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:44,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:13:44,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:44,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-28 12:13:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:44,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:44,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:13:44,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 12:13:44,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:44,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:13:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:44,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-28 12:13:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:45,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:45,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:13:45,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:45,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:13:45,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:45,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:13:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:45,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 569 proven. 108 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2020-10-28 12:13:45,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738172943] [2020-10-28 12:13:45,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:45,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 12:13:45,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464704043] [2020-10-28 12:13:45,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 12:13:45,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:45,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 12:13:45,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 12:13:45,492 INFO L87 Difference]: Start difference. First operand 11540 states and 13095 transitions. Second operand 9 states. [2020-10-28 12:13:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:51,245 INFO L93 Difference]: Finished difference Result 24786 states and 28208 transitions. [2020-10-28 12:13:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:13:51,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 661 [2020-10-28 12:13:51,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:51,269 INFO L225 Difference]: With dead ends: 24786 [2020-10-28 12:13:51,269 INFO L226 Difference]: Without dead ends: 13442 [2020-10-28 12:13:51,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:13:51,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13442 states. [2020-10-28 12:13:51,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13442 to 11908. [2020-10-28 12:13:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11908 states. [2020-10-28 12:13:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11908 states to 11908 states and 13428 transitions. [2020-10-28 12:13:51,444 INFO L78 Accepts]: Start accepts. Automaton has 11908 states and 13428 transitions. Word has length 661 [2020-10-28 12:13:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:51,445 INFO L481 AbstractCegarLoop]: Abstraction has 11908 states and 13428 transitions. [2020-10-28 12:13:51,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 12:13:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 11908 states and 13428 transitions. [2020-10-28 12:13:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2020-10-28 12:13:51,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:51,458 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:51,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:13:51,458 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:51,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:51,459 INFO L82 PathProgramCache]: Analyzing trace with hash -830987083, now seen corresponding path program 1 times [2020-10-28 12:13:51,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:51,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632848499] [2020-10-28 12:13:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:54,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:54,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 682 [2020-10-28 12:13:54,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:54,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2650 [2020-10-28 12:13:54,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:54,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:13:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 453 [2020-10-28 12:13:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-28 12:13:54,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:54,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:54,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:54,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:54,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:13:54,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:54,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:54,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:54,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:54,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:13:54,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:54,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:13:54,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:54,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:54,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:54,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:54,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:54,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:54,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:13:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:54,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:54,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:13:54,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:54,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:13:54,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:54,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:54,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:54,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-28 12:13:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:54,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:54,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:13:54,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:54,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:13:54,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:54,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:13:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:54,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-28 12:13:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:54,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:54,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:54,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:13:54,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:54,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 12:13:54,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:54,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:13:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 12:13:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 588 proven. 53 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2020-10-28 12:13:55,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632848499] [2020-10-28 12:13:55,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:55,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:13:55,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965706743] [2020-10-28 12:13:55,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:13:55,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:55,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:13:55,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:13:55,320 INFO L87 Difference]: Start difference. First operand 11908 states and 13428 transitions. Second operand 8 states. [2020-10-28 12:14:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:00,507 INFO L93 Difference]: Finished difference Result 24219 states and 27297 transitions. [2020-10-28 12:14:00,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:14:00,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 664 [2020-10-28 12:14:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:00,510 INFO L225 Difference]: With dead ends: 24219 [2020-10-28 12:14:00,510 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 12:14:00,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:14:00,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 12:14:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 12:14:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 12:14:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 12:14:00,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 664 [2020-10-28 12:14:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:00,534 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 12:14:00,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:14:00,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 12:14:00,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 12:14:00,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:14:00,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 12:14:01,139 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 106 [2020-10-28 12:14:02,374 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 107 [2020-10-28 12:14:02,833 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 104 [2020-10-28 12:14:03,250 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 106 [2020-10-28 12:14:04,442 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 532 DAG size of output: 434