/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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:02:37,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:02:37,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:02:37,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:02:37,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:02:37,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:02:37,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:02:37,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:02:37,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:02:37,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:02:37,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:02:37,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:02:37,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:02:37,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:02:37,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:02:37,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:02:37,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:02:37,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:02:37,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:02:37,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:02:37,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:02:37,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:02:37,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:02:37,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:02:37,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:02:37,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:02:37,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:02:37,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:02:37,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:02:37,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:02:37,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:02:37,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:02:37,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:02:37,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:02:37,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:02:37,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:02:37,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:02:37,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:02:37,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:02:37,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:02:37,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:02:37,565 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 12:02:37,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:02:37,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:02:37,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:02:37,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:02:37,627 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:02:37,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:02:37,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:02:37,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:02:37,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:02:37,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:02:37,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:02:37,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:02:37,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:02:37,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:02:37,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:02:37,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:02:37,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:02:37,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:02:37,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:02:37,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:02:37,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:02:37,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:02:37,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:02:37,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:02:37,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:02:37,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:02:37,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:02:37,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:02:37,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:02:37,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:02:38,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:02:38,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:02:38,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:02:38,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:02:38,154 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:02:38,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11.c [2020-10-28 12:02:38,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdca9c843/4b84786f8dda45cdb5c5e5a4d2e3cf8d/FLAGce57f2cdc [2020-10-28 12:02:39,080 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:02:39,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label11.c [2020-10-28 12:02:39,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdca9c843/4b84786f8dda45cdb5c5e5a4d2e3cf8d/FLAGce57f2cdc [2020-10-28 12:02:39,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdca9c843/4b84786f8dda45cdb5c5e5a4d2e3cf8d [2020-10-28 12:02:39,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:02:39,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:02:39,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:02:39,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:02:39,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:02:39,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:02:39" (1/1) ... [2020-10-28 12:02:39,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b3ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:39, skipping insertion in model container [2020-10-28 12:02:39,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:02:39" (1/1) ... [2020-10-28 12:02:39,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:02:39,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:02:40,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:02:40,019 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:02:40,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:02:40,291 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:02:40,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:40 WrapperNode [2020-10-28 12:02:40,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:02:40,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:02:40,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:02:40,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:02:40,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:40" (1/1) ... [2020-10-28 12:02:40,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:40" (1/1) ... [2020-10-28 12:02:40,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:40" (1/1) ... [2020-10-28 12:02:40,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:40" (1/1) ... [2020-10-28 12:02:40,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:40" (1/1) ... [2020-10-28 12:02:40,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:40" (1/1) ... [2020-10-28 12:02:40,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:40" (1/1) ... [2020-10-28 12:02:40,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:02:40,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:02:40,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:02:40,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:02:40,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:40" (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 12:02:40,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:02:40,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:02:40,533 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:02:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:02:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:02:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:02:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:02:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:02:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:02:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:02:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:02:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:02:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:02:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:02:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:02:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:02:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:02:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:02:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:02:42,813 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:02:42,813 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:02:42,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:02:42 BoogieIcfgContainer [2020-10-28 12:02:42,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:02:42,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:02:42,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:02:42,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:02:42,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:02:39" (1/3) ... [2020-10-28 12:02:42,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a9ba9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:02:42, skipping insertion in model container [2020-10-28 12:02:42,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:40" (2/3) ... [2020-10-28 12:02:42,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a9ba9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:02:42, skipping insertion in model container [2020-10-28 12:02:42,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:02:42" (3/3) ... [2020-10-28 12:02:42,827 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label11.c [2020-10-28 12:02:42,841 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:02:42,848 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:02:42,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:02:42,898 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:02:42,898 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:02:42,898 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:02:42,898 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:02:42,898 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:02:42,899 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:02:42,899 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:02:42,899 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:02:42,926 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:02:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 12:02:42,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:42,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:02:42,938 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash 212567024, now seen corresponding path program 1 times [2020-10-28 12:02:42,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:42,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210051560] [2020-10-28 12:02:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:43,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:43,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:02:43,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-28 12:02:43,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:43,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:02:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 12:02:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:02:44,169 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:02:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:44,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:44,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:44,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:02:44,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:44,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:44,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:44,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:02:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:44,233 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 12:02:44,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210051560] [2020-10-28 12:02:44,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:02:44,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:02:44,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659828396] [2020-10-28 12:02:44,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:02:44,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:44,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:02:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:02:44,262 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:02:44,445 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:02:47,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:47,907 INFO L93 Difference]: Finished difference Result 811 states and 1410 transitions. [2020-10-28 12:02:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:02:47,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-28 12:02:47,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:47,928 INFO L225 Difference]: With dead ends: 811 [2020-10-28 12:02:47,928 INFO L226 Difference]: Without dead ends: 435 [2020-10-28 12:02:47,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:02:47,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-28 12:02:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 429. [2020-10-28 12:02:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-28 12:02:48,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 618 transitions. [2020-10-28 12:02:48,049 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 618 transitions. Word has length 68 [2020-10-28 12:02:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:48,050 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 618 transitions. [2020-10-28 12:02:48,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:02:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 618 transitions. [2020-10-28 12:02:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 12:02:48,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:48,070 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, 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] [2020-10-28 12:02:48,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:02:48,071 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:48,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:48,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1769431564, now seen corresponding path program 1 times [2020-10-28 12:02:48,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:48,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223014307] [2020-10-28 12:02:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:50,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:50,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 12:02:50,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:02:50,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2110 [2020-10-28 12:02:50,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:50,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:02:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:02:50,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:02:50,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:50,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:50,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:50,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:50,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:02:50,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:50,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:02:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:02:50,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:50,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:50,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:02:50,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 12:02:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:50,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:02:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:02:50,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:02:50,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223014307] [2020-10-28 12:02:50,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:02:50,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:02:50,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808991974] [2020-10-28 12:02:50,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:02:50,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:50,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:02:50,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:02:50,887 INFO L87 Difference]: Start difference. First operand 429 states and 618 transitions. Second operand 7 states. [2020-10-28 12:02:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:54,416 INFO L93 Difference]: Finished difference Result 1278 states and 1890 transitions. [2020-10-28 12:02:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:02:54,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-28 12:02:54,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:54,435 INFO L225 Difference]: With dead ends: 1278 [2020-10-28 12:02:54,436 INFO L226 Difference]: Without dead ends: 855 [2020-10-28 12:02:54,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:02:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-10-28 12:02:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 820. [2020-10-28 12:02:54,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-28 12:02:54,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1134 transitions. [2020-10-28 12:02:54,515 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1134 transitions. Word has length 140 [2020-10-28 12:02:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:54,518 INFO L481 AbstractCegarLoop]: Abstraction has 820 states and 1134 transitions. [2020-10-28 12:02:54,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:02:54,519 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1134 transitions. [2020-10-28 12:02:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 12:02:54,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:54,525 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, 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] [2020-10-28 12:02:54,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:02:54,527 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:54,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1944049288, now seen corresponding path program 1 times [2020-10-28 12:02:54,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:54,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190868014] [2020-10-28 12:02:54,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:54,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:56,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:56,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 12:02:56,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:02:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1933 [2020-10-28 12:02:56,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:56,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:02:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:02:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:02:56,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:56,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:56,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:56,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:56,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:02:56,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:56,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:02:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:56,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:56,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:56,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:56,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:02:56,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:56,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 12:02:56,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:56,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:02:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:02:56,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:02:57,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190868014] [2020-10-28 12:02:57,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:02:57,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:02:57,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466077776] [2020-10-28 12:02:57,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:02:57,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:57,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:02:57,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:02:57,042 INFO L87 Difference]: Start difference. First operand 820 states and 1134 transitions. Second operand 7 states. [2020-10-28 12:03:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:00,749 INFO L93 Difference]: Finished difference Result 2252 states and 3143 transitions. [2020-10-28 12:03:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:03:00,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-28 12:03:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:00,759 INFO L225 Difference]: With dead ends: 2252 [2020-10-28 12:03:00,760 INFO L226 Difference]: Without dead ends: 1438 [2020-10-28 12:03:00,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 12:03:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-10-28 12:03:00,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1413. [2020-10-28 12:03:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2020-10-28 12:03:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1784 transitions. [2020-10-28 12:03:00,819 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1784 transitions. Word has length 142 [2020-10-28 12:03:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:00,820 INFO L481 AbstractCegarLoop]: Abstraction has 1413 states and 1784 transitions. [2020-10-28 12:03:00,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1784 transitions. [2020-10-28 12:03:00,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-28 12:03:00,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:00,823 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, 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] [2020-10-28 12:03:00,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:03:00,823 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:00,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:00,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1087830950, now seen corresponding path program 1 times [2020-10-28 12:03:00,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:00,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556119185] [2020-10-28 12:03:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:01,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:02,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:02,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 12:03:02,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:02,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-10-28 12:03:02,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:02,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:03:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 12:03:02,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:02,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:02,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:03:02,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:02,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:02,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:02,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:02,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:02,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:03:02,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 12:03:02,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:02,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:03:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:03:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:03:02,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556119185] [2020-10-28 12:03:02,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:02,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:03:02,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481044695] [2020-10-28 12:03:02,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:03:02,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:02,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:03:02,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:03:02,540 INFO L87 Difference]: Start difference. First operand 1413 states and 1784 transitions. Second operand 5 states. [2020-10-28 12:03:05,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:05,420 INFO L93 Difference]: Finished difference Result 3222 states and 4302 transitions. [2020-10-28 12:03:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:05,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-28 12:03:05,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:05,439 INFO L225 Difference]: With dead ends: 3222 [2020-10-28 12:03:05,439 INFO L226 Difference]: Without dead ends: 2003 [2020-10-28 12:03:05,443 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 12:03:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2020-10-28 12:03:05,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1995. [2020-10-28 12:03:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-10-28 12:03:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2522 transitions. [2020-10-28 12:03:05,547 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2522 transitions. Word has length 184 [2020-10-28 12:03:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:05,548 INFO L481 AbstractCegarLoop]: Abstraction has 1995 states and 2522 transitions. [2020-10-28 12:03:05,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:03:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2522 transitions. [2020-10-28 12:03:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-28 12:03:05,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:05,552 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, 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] [2020-10-28 12:03:05,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:03:05,553 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:05,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:05,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1164768893, now seen corresponding path program 1 times [2020-10-28 12:03:05,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:05,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967179296] [2020-10-28 12:03:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:05,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:06,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 12:03:06,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-28 12:03:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:06,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 12:03:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:06,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:06,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:06,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:06,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:06,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:03:06,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:06,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:06,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:06,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:06,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:03:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:06,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:03:06,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967179296] [2020-10-28 12:03:06,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:06,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:03:06,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117794346] [2020-10-28 12:03:06,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:03:06,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:06,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:03:06,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:03:06,469 INFO L87 Difference]: Start difference. First operand 1995 states and 2522 transitions. Second operand 5 states. [2020-10-28 12:03:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:09,321 INFO L93 Difference]: Finished difference Result 4585 states and 5987 transitions. [2020-10-28 12:03:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:09,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-28 12:03:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:09,339 INFO L225 Difference]: With dead ends: 4585 [2020-10-28 12:03:09,339 INFO L226 Difference]: Without dead ends: 2784 [2020-10-28 12:03:09,345 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 12:03:09,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2020-10-28 12:03:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2576. [2020-10-28 12:03:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2576 states. [2020-10-28 12:03:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 3345 transitions. [2020-10-28 12:03:09,428 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 3345 transitions. Word has length 199 [2020-10-28 12:03:09,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:09,429 INFO L481 AbstractCegarLoop]: Abstraction has 2576 states and 3345 transitions. [2020-10-28 12:03:09,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:03:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 3345 transitions. [2020-10-28 12:03:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 12:03:09,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:09,435 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:03:09,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:03:09,436 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:09,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1979911490, now seen corresponding path program 1 times [2020-10-28 12:03:09,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:09,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65503093] [2020-10-28 12:03:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:09,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:09,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:12,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:12,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 12:03:12,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2977 [2020-10-28 12:03:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:12,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:03:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:03:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:12,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:12,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:12,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:12,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:12,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:03:12,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:12,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:12,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:12,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:12,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:03:12,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 12:03:12,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:12,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:12,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:03:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:12,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:03:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:13,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:13,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:03:13,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:13,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 12:03:13,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:13,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:03:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:13,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65503093] [2020-10-28 12:03:13,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:13,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:13,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604704263] [2020-10-28 12:03:13,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:13,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:13,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:13,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:13,257 INFO L87 Difference]: Start difference. First operand 2576 states and 3345 transitions. Second operand 7 states. [2020-10-28 12:03:16,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:16,945 INFO L93 Difference]: Finished difference Result 5561 states and 7284 transitions. [2020-10-28 12:03:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:03:16,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-28 12:03:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:16,965 INFO L225 Difference]: With dead ends: 5561 [2020-10-28 12:03:16,966 INFO L226 Difference]: Without dead ends: 3179 [2020-10-28 12:03:16,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 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 12:03:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2020-10-28 12:03:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3169. [2020-10-28 12:03:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3169 states. [2020-10-28 12:03:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 4028 transitions. [2020-10-28 12:03:17,098 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 4028 transitions. Word has length 258 [2020-10-28 12:03:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:17,099 INFO L481 AbstractCegarLoop]: Abstraction has 3169 states and 4028 transitions. [2020-10-28 12:03:17,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 4028 transitions. [2020-10-28 12:03:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-28 12:03:17,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:17,106 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:17,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:03:17,106 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:17,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:17,108 INFO L82 PathProgramCache]: Analyzing trace with hash -2123104854, now seen corresponding path program 1 times [2020-10-28 12:03:17,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:17,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270058420] [2020-10-28 12:03:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:17,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:17,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:18,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:18,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-28 12:03:18,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:18,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-28 12:03:18,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:18,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:03:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 12:03:18,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:18,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:18,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:18,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:18,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:18,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:03:18,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:18,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:18,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:18,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:18,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:18,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:18,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:03:18,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:03:18,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:18,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:18,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:03:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:18,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:18,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:03:18,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:03:18,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:18,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:03:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:03:18,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270058420] [2020-10-28 12:03:18,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:18,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:03:18,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348896965] [2020-10-28 12:03:18,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:03:18,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:18,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:03:18,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:03:18,814 INFO L87 Difference]: Start difference. First operand 3169 states and 4028 transitions. Second operand 5 states. [2020-10-28 12:03:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:22,034 INFO L93 Difference]: Finished difference Result 6929 states and 9070 transitions. [2020-10-28 12:03:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:22,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-28 12:03:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:22,062 INFO L225 Difference]: With dead ends: 6929 [2020-10-28 12:03:22,062 INFO L226 Difference]: Without dead ends: 3954 [2020-10-28 12:03:22,070 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 12:03:22,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2020-10-28 12:03:22,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3752. [2020-10-28 12:03:22,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3752 states. [2020-10-28 12:03:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 4728 transitions. [2020-10-28 12:03:22,192 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 4728 transitions. Word has length 268 [2020-10-28 12:03:22,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:22,192 INFO L481 AbstractCegarLoop]: Abstraction has 3752 states and 4728 transitions. [2020-10-28 12:03:22,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:03:22,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 4728 transitions. [2020-10-28 12:03:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-28 12:03:22,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:22,200 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:03:22,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:03:22,200 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:22,201 INFO L82 PathProgramCache]: Analyzing trace with hash 253532714, now seen corresponding path program 1 times [2020-10-28 12:03:22,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:22,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377715659] [2020-10-28 12:03:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:22,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:22,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:24,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:24,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-28 12:03:24,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:24,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2596 [2020-10-28 12:03:24,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:24,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:03:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:03:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:25,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:25,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:25,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:25,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:25,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:25,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:03:25,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:25,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:25,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:25,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:25,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:25,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:03:25,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:25,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 12:03:25,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:25,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:25,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:25,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:03:25,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:25,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:03:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:25,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:25,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:25,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:03:25,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 12:03:25,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:25,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:03:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:26,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377715659] [2020-10-28 12:03:26,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:26,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:26,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039547577] [2020-10-28 12:03:26,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:26,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:26,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:26,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:26,091 INFO L87 Difference]: Start difference. First operand 3752 states and 4728 transitions. Second operand 7 states. [2020-10-28 12:03:30,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:30,017 INFO L93 Difference]: Finished difference Result 7817 states and 10528 transitions. [2020-10-28 12:03:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:03:30,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-28 12:03:30,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:30,040 INFO L225 Difference]: With dead ends: 7817 [2020-10-28 12:03:30,041 INFO L226 Difference]: Without dead ends: 4259 [2020-10-28 12:03:30,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:03:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2020-10-28 12:03:30,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 3968. [2020-10-28 12:03:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3968 states. [2020-10-28 12:03:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5008 transitions. [2020-10-28 12:03:30,200 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5008 transitions. Word has length 268 [2020-10-28 12:03:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:30,200 INFO L481 AbstractCegarLoop]: Abstraction has 3968 states and 5008 transitions. [2020-10-28 12:03:30,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5008 transitions. [2020-10-28 12:03:30,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-28 12:03:30,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:30,210 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:03:30,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:03:30,210 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:30,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1639995301, now seen corresponding path program 1 times [2020-10-28 12:03:30,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:30,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423827711] [2020-10-28 12:03:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:30,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:32,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:32,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 12:03:32,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:32,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2401 [2020-10-28 12:03:32,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:32,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:03:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:32,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:32,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:32,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:32,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:03:32,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:32,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:32,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:32,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:32,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:32,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:32,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:33,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:33,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:03:33,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:33,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:33,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:33,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:33,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:03:33,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 12:03:33,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:33,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:03:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:33,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423827711] [2020-10-28 12:03:33,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:33,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:33,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550035683] [2020-10-28 12:03:33,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:33,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:33,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:33,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:33,413 INFO L87 Difference]: Start difference. First operand 3968 states and 5008 transitions. Second operand 7 states. [2020-10-28 12:03:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:38,452 INFO L93 Difference]: Finished difference Result 9154 states and 12004 transitions. [2020-10-28 12:03:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:03:38,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-28 12:03:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:38,478 INFO L225 Difference]: With dead ends: 9154 [2020-10-28 12:03:38,479 INFO L226 Difference]: Without dead ends: 5380 [2020-10-28 12:03:38,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 12:03:38,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2020-10-28 12:03:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 5165. [2020-10-28 12:03:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5165 states. [2020-10-28 12:03:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 6598 transitions. [2020-10-28 12:03:38,640 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 6598 transitions. Word has length 273 [2020-10-28 12:03:38,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:38,640 INFO L481 AbstractCegarLoop]: Abstraction has 5165 states and 6598 transitions. [2020-10-28 12:03:38,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 6598 transitions. [2020-10-28 12:03:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-28 12:03:38,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:38,649 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:03:38,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:03:38,649 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:38,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:38,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1795975843, now seen corresponding path program 1 times [2020-10-28 12:03:38,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:38,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257905936] [2020-10-28 12:03:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:38,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:38,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:43,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:43,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 12:03:43,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:03:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 12:03:43,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:43,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:03:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:03:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:43,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:43,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:43,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:43,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:43,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:43,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:03:43,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:43,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:43,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:43,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:43,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:43,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:43,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:43,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:43,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 12:03:43,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:43,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:03:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:03:43,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:44,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:03:44,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:03:44,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:44,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 12:03:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 12:03:44,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257905936] [2020-10-28 12:03:44,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:44,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:03:44,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490804365] [2020-10-28 12:03:44,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:03:44,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:44,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:03:44,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:03:44,232 INFO L87 Difference]: Start difference. First operand 5165 states and 6598 transitions. Second operand 5 states. [2020-10-28 12:03:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:46,907 INFO L93 Difference]: Finished difference Result 11481 states and 15169 transitions. [2020-10-28 12:03:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:46,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-28 12:03:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:46,957 INFO L225 Difference]: With dead ends: 11481 [2020-10-28 12:03:46,957 INFO L226 Difference]: Without dead ends: 6510 [2020-10-28 12:03:46,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:03:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2020-10-28 12:03:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 5737. [2020-10-28 12:03:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5737 states. [2020-10-28 12:03:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5737 states to 5737 states and 7339 transitions. [2020-10-28 12:03:47,155 INFO L78 Accepts]: Start accepts. Automaton has 5737 states and 7339 transitions. Word has length 273 [2020-10-28 12:03:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:47,156 INFO L481 AbstractCegarLoop]: Abstraction has 5737 states and 7339 transitions. [2020-10-28 12:03:47,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:03:47,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5737 states and 7339 transitions. [2020-10-28 12:03:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-28 12:03:47,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:47,166 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:03:47,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:03:47,167 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:47,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:47,167 INFO L82 PathProgramCache]: Analyzing trace with hash -2138072218, now seen corresponding path program 1 times [2020-10-28 12:03:47,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:47,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070010531] [2020-10-28 12:03:47,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:47,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:47,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:49,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:49,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-28 12:03:49,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:49,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2641 [2020-10-28 12:03:49,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:49,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:03:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:03:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:50,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:03:50,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:50,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:50,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:50,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:50,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:03:50,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:50,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 12:03:50,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:50,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:03:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:50,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:03:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:50,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:50,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:03:50,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:50,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:03:50,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:50,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:03:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:50,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070010531] [2020-10-28 12:03:50,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:50,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:50,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051516875] [2020-10-28 12:03:50,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:50,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:50,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:50,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:50,529 INFO L87 Difference]: Start difference. First operand 5737 states and 7339 transitions. Second operand 7 states. [2020-10-28 12:03:54,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:54,058 INFO L93 Difference]: Finished difference Result 12088 states and 15435 transitions. [2020-10-28 12:03:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:03:54,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2020-10-28 12:03:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:54,085 INFO L225 Difference]: With dead ends: 12088 [2020-10-28 12:03:54,085 INFO L226 Difference]: Without dead ends: 6357 [2020-10-28 12:03:54,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 12:03:54,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2020-10-28 12:03:54,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 6327. [2020-10-28 12:03:54,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6327 states. [2020-10-28 12:03:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6327 states to 6327 states and 8027 transitions. [2020-10-28 12:03:54,276 INFO L78 Accepts]: Start accepts. Automaton has 6327 states and 8027 transitions. Word has length 289 [2020-10-28 12:03:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:54,277 INFO L481 AbstractCegarLoop]: Abstraction has 6327 states and 8027 transitions. [2020-10-28 12:03:54,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:54,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6327 states and 8027 transitions. [2020-10-28 12:03:54,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-28 12:03:54,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:54,291 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:54,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:03:54,291 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:54,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:54,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1752638532, now seen corresponding path program 1 times [2020-10-28 12:03:54,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:54,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946782320] [2020-10-28 12:03:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:55,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:55,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:56,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 12:03:56,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:03:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2264 [2020-10-28 12:03:56,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:56,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:03:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 12:03:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:56,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:56,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:56,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:56,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:03:56,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:56,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:03:56,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:56,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:56,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:56,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 12:03:56,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:56,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:03:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:56,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:57,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:57,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:03:57,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 12:03:57,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:57,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 12:03:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:03:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-28 12:03:57,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946782320] [2020-10-28 12:03:57,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:03:57,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:03:57,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573055012] [2020-10-28 12:03:57,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:03:57,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:57,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:03:57,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:03:57,220 INFO L87 Difference]: Start difference. First operand 6327 states and 8027 transitions. Second operand 6 states. [2020-10-28 12:03:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:59,243 INFO L93 Difference]: Finished difference Result 12658 states and 16075 transitions. [2020-10-28 12:03:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:59,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 313 [2020-10-28 12:03:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:59,270 INFO L225 Difference]: With dead ends: 12658 [2020-10-28 12:03:59,270 INFO L226 Difference]: Without dead ends: 6337 [2020-10-28 12:03:59,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2020-10-28 12:03:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 6317. [2020-10-28 12:03:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6317 states. [2020-10-28 12:03:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 8004 transitions. [2020-10-28 12:03:59,452 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 8004 transitions. Word has length 313 [2020-10-28 12:03:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:59,453 INFO L481 AbstractCegarLoop]: Abstraction has 6317 states and 8004 transitions. [2020-10-28 12:03:59,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:03:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 8004 transitions. [2020-10-28 12:03:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-28 12:03:59,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:59,463 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:59,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:03:59,463 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:59,464 INFO L82 PathProgramCache]: Analyzing trace with hash 536484806, now seen corresponding path program 1 times [2020-10-28 12:03:59,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:59,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651594600] [2020-10-28 12:03:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:59,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:59,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 12:03:59,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-28 12:03:59,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:59,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:03:59,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:00,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:00,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:00,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:00,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:00,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:00,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:04:00,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:00,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:00,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:00,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 12:04:00,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:00,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:00,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:00,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:00,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:00,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:04:00,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 12:04:00,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:00,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:04:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:04:01,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651594600] [2020-10-28 12:04:01,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:01,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:04:01,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645576765] [2020-10-28 12:04:01,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:04:01,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:01,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:04:01,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:04:01,037 INFO L87 Difference]: Start difference. First operand 6317 states and 8004 transitions. Second operand 8 states. [2020-10-28 12:04:01,937 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-28 12:04:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:06,331 INFO L93 Difference]: Finished difference Result 14557 states and 18732 transitions. [2020-10-28 12:04:06,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:04:06,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 313 [2020-10-28 12:04:06,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:06,362 INFO L225 Difference]: With dead ends: 14557 [2020-10-28 12:04:06,362 INFO L226 Difference]: Without dead ends: 8246 [2020-10-28 12:04:06,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:04:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8246 states. [2020-10-28 12:04:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8246 to 7846. [2020-10-28 12:04:06,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7846 states. [2020-10-28 12:04:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7846 states to 7846 states and 9921 transitions. [2020-10-28 12:04:06,591 INFO L78 Accepts]: Start accepts. Automaton has 7846 states and 9921 transitions. Word has length 313 [2020-10-28 12:04:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:06,592 INFO L481 AbstractCegarLoop]: Abstraction has 7846 states and 9921 transitions. [2020-10-28 12:04:06,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:04:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 7846 states and 9921 transitions. [2020-10-28 12:04:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 12:04:06,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:06,605 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:04:06,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:04:06,606 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:06,606 INFO L82 PathProgramCache]: Analyzing trace with hash 761798594, now seen corresponding path program 1 times [2020-10-28 12:04:06,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:06,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051118996] [2020-10-28 12:04:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:06,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:07,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:07,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:09,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-28 12:04:09,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:04:09,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2625 [2020-10-28 12:04:09,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:09,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:04:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:04:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:09,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:09,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:09,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:09,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:09,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:09,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:09,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:09,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:09,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:09,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:04:09,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:09,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:09,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:04:09,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 12:04:09,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:09,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:04:09,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:09,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:04:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:09,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:04:09,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:09,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:04:09,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:09,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:04:09,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 12:04:09,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051118996] [2020-10-28 12:04:09,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:09,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:09,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645702442] [2020-10-28 12:04:09,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:09,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:09,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:09,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:09,984 INFO L87 Difference]: Start difference. First operand 7846 states and 9921 transitions. Second operand 7 states. [2020-10-28 12:04:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:13,312 INFO L93 Difference]: Finished difference Result 16271 states and 20492 transitions. [2020-10-28 12:04:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:04:13,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-28 12:04:13,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:13,339 INFO L225 Difference]: With dead ends: 16271 [2020-10-28 12:04:13,339 INFO L226 Difference]: Without dead ends: 8431 [2020-10-28 12:04:13,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 12:04:13,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2020-10-28 12:04:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 6898. [2020-10-28 12:04:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6898 states. [2020-10-28 12:04:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6898 states to 6898 states and 8742 transitions. [2020-10-28 12:04:13,540 INFO L78 Accepts]: Start accepts. Automaton has 6898 states and 8742 transitions. Word has length 342 [2020-10-28 12:04:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:13,541 INFO L481 AbstractCegarLoop]: Abstraction has 6898 states and 8742 transitions. [2020-10-28 12:04:13,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 6898 states and 8742 transitions. [2020-10-28 12:04:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-28 12:04:13,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:13,552 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:13,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:04:13,553 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:13,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:13,553 INFO L82 PathProgramCache]: Analyzing trace with hash 674199483, now seen corresponding path program 1 times [2020-10-28 12:04:13,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:13,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120852176] [2020-10-28 12:04:13,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:13,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:14,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:18,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:18,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-28 12:04:18,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:04:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4517 [2020-10-28 12:04:18,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:18,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 12:04:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:04:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:18,316 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:04:18,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:18,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:18,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:18,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:18,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:18,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:18,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:18,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:18,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:18,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:18,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:18,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:18,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:04:18,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:18,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:18,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:18,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:18,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:04:18,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:18,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:04:18,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:18,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:18,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:18,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:18,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 12:04:18,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:18,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-28 12:04:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:18,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:18,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:18,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:04:18,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:18,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:04:18,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:18,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:04:18,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-28 12:04:18,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120852176] [2020-10-28 12:04:18,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:18,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:18,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662878540] [2020-10-28 12:04:18,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:18,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:18,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:18,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:18,743 INFO L87 Difference]: Start difference. First operand 6898 states and 8742 transitions. Second operand 7 states. [2020-10-28 12:04:22,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:22,507 INFO L93 Difference]: Finished difference Result 14406 states and 18320 transitions. [2020-10-28 12:04:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:22,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-28 12:04:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:22,586 INFO L225 Difference]: With dead ends: 14406 [2020-10-28 12:04:22,586 INFO L226 Difference]: Without dead ends: 7514 [2020-10-28 12:04:22,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 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 12:04:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7514 states. [2020-10-28 12:04:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7514 to 6730. [2020-10-28 12:04:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6730 states. [2020-10-28 12:04:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6730 states to 6730 states and 8548 transitions. [2020-10-28 12:04:22,767 INFO L78 Accepts]: Start accepts. Automaton has 6730 states and 8548 transitions. Word has length 343 [2020-10-28 12:04:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:22,768 INFO L481 AbstractCegarLoop]: Abstraction has 6730 states and 8548 transitions. [2020-10-28 12:04:22,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6730 states and 8548 transitions. [2020-10-28 12:04:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 12:04:22,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:22,779 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, 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, 1, 1, 1, 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 12:04:22,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:04:22,781 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:22,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1177898198, now seen corresponding path program 1 times [2020-10-28 12:04:22,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:22,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279452271] [2020-10-28 12:04:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:23,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:24,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:24,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:24,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 12:04:24,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:04:24,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1889 [2020-10-28 12:04:24,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:24,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:24,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:04:24,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:04:24,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-28 12:04:24,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:24,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:24,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:24,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:24,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:24,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:04:24,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:24,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:25,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:25,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:25,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:25,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:04:25,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:25,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:25,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:25,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:25,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:25,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:25,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:25,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:04:25,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 12:04:25,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:25,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:04:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 184 proven. 60 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:04:25,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279452271] [2020-10-28 12:04:25,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:25,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:04:25,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541944826] [2020-10-28 12:04:25,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:04:25,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:25,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:04:25,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:25,487 INFO L87 Difference]: Start difference. First operand 6730 states and 8548 transitions. Second operand 6 states. [2020-10-28 12:04:28,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:28,595 INFO L93 Difference]: Finished difference Result 13534 states and 17456 transitions. [2020-10-28 12:04:28,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:04:28,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 342 [2020-10-28 12:04:28,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:28,617 INFO L225 Difference]: With dead ends: 13534 [2020-10-28 12:04:28,617 INFO L226 Difference]: Without dead ends: 6810 [2020-10-28 12:04:28,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:04:28,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2020-10-28 12:04:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 6536. [2020-10-28 12:04:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6536 states. [2020-10-28 12:04:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 7958 transitions. [2020-10-28 12:04:28,819 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 7958 transitions. Word has length 342 [2020-10-28 12:04:28,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:28,820 INFO L481 AbstractCegarLoop]: Abstraction has 6536 states and 7958 transitions. [2020-10-28 12:04:28,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:04:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 7958 transitions. [2020-10-28 12:04:28,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-28 12:04:28,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:28,833 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:28,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:04:28,833 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:28,834 INFO L82 PathProgramCache]: Analyzing trace with hash -326032854, now seen corresponding path program 1 times [2020-10-28 12:04:28,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:28,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034903208] [2020-10-28 12:04:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:29,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:30,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:30,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-28 12:04:30,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2045 [2020-10-28 12:04:30,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:30,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:04:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:04:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:31,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:31,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:31,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:31,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:31,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:31,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:04:31,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:31,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:31,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:31,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:31,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:31,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:04:31,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:04:31,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:31,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:31,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:04:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:31,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:31,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:04:31,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:31,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:04:31,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:31,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:04:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:31,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:04:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:31,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:31,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:04:31,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:04:31,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:31,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:04:31,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:04:31,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034903208] [2020-10-28 12:04:31,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:31,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:04:31,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201606856] [2020-10-28 12:04:31,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:04:31,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:31,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:04:31,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:04:31,630 INFO L87 Difference]: Start difference. First operand 6536 states and 7958 transitions. Second operand 8 states. [2020-10-28 12:04:36,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:36,651 INFO L93 Difference]: Finished difference Result 14643 states and 18032 transitions. [2020-10-28 12:04:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:04:36,652 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 354 [2020-10-28 12:04:36,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:36,675 INFO L225 Difference]: With dead ends: 14643 [2020-10-28 12:04:36,675 INFO L226 Difference]: Without dead ends: 8113 [2020-10-28 12:04:36,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:04:36,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8113 states. [2020-10-28 12:04:36,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8113 to 8076. [2020-10-28 12:04:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8076 states. [2020-10-28 12:04:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8076 states to 8076 states and 9884 transitions. [2020-10-28 12:04:36,882 INFO L78 Accepts]: Start accepts. Automaton has 8076 states and 9884 transitions. Word has length 354 [2020-10-28 12:04:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:36,882 INFO L481 AbstractCegarLoop]: Abstraction has 8076 states and 9884 transitions. [2020-10-28 12:04:36,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:04:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 8076 states and 9884 transitions. [2020-10-28 12:04:36,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-28 12:04:36,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:36,894 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:36,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:04:36,895 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:36,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1446430463, now seen corresponding path program 1 times [2020-10-28 12:04:36,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:36,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050429160] [2020-10-28 12:04:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:39,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-28 12:04:39,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2201 [2020-10-28 12:04:39,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:39,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:04:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 12:04:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:39,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:39,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:39,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:39,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:39,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:39,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:39,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:39,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:39,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:39,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:04:39,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:39,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:04:39,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:39,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:04:39,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:39,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:04:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:39,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:39,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:39,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:04:39,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:39,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 12:04:39,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:39,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:04:39,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:04:39,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050429160] [2020-10-28 12:04:39,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:39,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:39,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789693928] [2020-10-28 12:04:39,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:39,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:39,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:39,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:39,849 INFO L87 Difference]: Start difference. First operand 8076 states and 9884 transitions. Second operand 7 states. [2020-10-28 12:04:43,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:43,674 INFO L93 Difference]: Finished difference Result 17059 states and 21603 transitions. [2020-10-28 12:04:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:43,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-28 12:04:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:43,703 INFO L225 Difference]: With dead ends: 17059 [2020-10-28 12:04:43,704 INFO L226 Difference]: Without dead ends: 8989 [2020-10-28 12:04:43,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:43,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8989 states. [2020-10-28 12:04:43,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8989 to 8462. [2020-10-28 12:04:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8462 states. [2020-10-28 12:04:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 10315 transitions. [2020-10-28 12:04:43,949 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 10315 transitions. Word has length 358 [2020-10-28 12:04:43,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:43,950 INFO L481 AbstractCegarLoop]: Abstraction has 8462 states and 10315 transitions. [2020-10-28 12:04:43,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 10315 transitions. [2020-10-28 12:04:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-28 12:04:43,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:43,962 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:43,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:04:43,962 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:43,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:43,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1940797750, now seen corresponding path program 1 times [2020-10-28 12:04:43,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:43,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331580757] [2020-10-28 12:04:43,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:44,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:45,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:46,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-28 12:04:46,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:04:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2250 [2020-10-28 12:04:46,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:46,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:04:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:04:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:46,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:46,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:46,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:46,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:04:46,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:46,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:46,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:46,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:04:46,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:46,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:04:46,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:46,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:46,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:04:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:46,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:04:46,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:04:46,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:46,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:04:46,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:04:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:46,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:04:46,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:46,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:04:46,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:46,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:46,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:46,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:46,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:04:46,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:04:46,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331580757] [2020-10-28 12:04:46,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:46,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:46,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374869037] [2020-10-28 12:04:46,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:46,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:46,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:46,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:46,981 INFO L87 Difference]: Start difference. First operand 8462 states and 10315 transitions. Second operand 7 states. [2020-10-28 12:04:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:52,255 INFO L93 Difference]: Finished difference Result 21090 states and 25424 transitions. [2020-10-28 12:04:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:04:52,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-28 12:04:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:52,281 INFO L225 Difference]: With dead ends: 21090 [2020-10-28 12:04:52,282 INFO L226 Difference]: Without dead ends: 10312 [2020-10-28 12:04:52,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 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 12:04:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10312 states. [2020-10-28 12:04:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10312 to 8034. [2020-10-28 12:04:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8034 states. [2020-10-28 12:04:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8034 states to 8034 states and 9392 transitions. [2020-10-28 12:04:52,523 INFO L78 Accepts]: Start accepts. Automaton has 8034 states and 9392 transitions. Word has length 369 [2020-10-28 12:04:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:52,523 INFO L481 AbstractCegarLoop]: Abstraction has 8034 states and 9392 transitions. [2020-10-28 12:04:52,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 8034 states and 9392 transitions. [2020-10-28 12:04:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-28 12:04:52,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:52,532 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:52,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:04:52,533 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:52,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:52,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2034685452, now seen corresponding path program 1 times [2020-10-28 12:04:52,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:52,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013397358] [2020-10-28 12:04:52,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:53,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:54,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:54,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-28 12:04:54,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2078 [2020-10-28 12:04:54,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:54,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:04:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:04:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:54,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:54,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:54,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:54,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:54,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:54,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:54,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:54,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:54,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:54,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:54,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:54,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 12:04:54,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:54,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:54,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:54,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:54,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:55,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:55,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:55,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:55,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:04:55,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:04:55,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:55,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:04:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-28 12:04:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:55,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:55,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:55,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 283 proven. 73 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-28 12:04:55,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013397358] [2020-10-28 12:04:55,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:55,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:55,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303073732] [2020-10-28 12:04:55,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:55,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:55,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:55,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:55,329 INFO L87 Difference]: Start difference. First operand 8034 states and 9392 transitions. Second operand 7 states. [2020-10-28 12:05:00,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:00,260 INFO L93 Difference]: Finished difference Result 16997 states and 19996 transitions. [2020-10-28 12:05:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:00,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-28 12:05:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:00,288 INFO L225 Difference]: With dead ends: 16997 [2020-10-28 12:05:00,288 INFO L226 Difference]: Without dead ends: 8968 [2020-10-28 12:05:00,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 12:05:00,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8968 states. [2020-10-28 12:05:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8968 to 8762. [2020-10-28 12:05:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8762 states. [2020-10-28 12:05:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8762 states to 8762 states and 10145 transitions. [2020-10-28 12:05:00,511 INFO L78 Accepts]: Start accepts. Automaton has 8762 states and 10145 transitions. Word has length 375 [2020-10-28 12:05:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:00,511 INFO L481 AbstractCegarLoop]: Abstraction has 8762 states and 10145 transitions. [2020-10-28 12:05:00,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 8762 states and 10145 transitions. [2020-10-28 12:05:00,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-28 12:05:00,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:00,522 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, 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, 2, 2, 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] [2020-10-28 12:05:00,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:05:00,522 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:00,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:00,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1931565717, now seen corresponding path program 1 times [2020-10-28 12:05:00,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:00,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332373682] [2020-10-28 12:05:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:00,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:01,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:01,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-28 12:05:01,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:01,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-28 12:05:01,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:01,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:01,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:01,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:05:01,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:05:01,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:01,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:01,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:01,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:01,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:01,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:01,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:01,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:01,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:01,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:05:01,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:01,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:05:01,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:01,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:01,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:05:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:01,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:01,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:01,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:05:01,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:05:01,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:01,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:05:01,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:01,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:05:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:01,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:01,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:05:01,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:05:01,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:01,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:05:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:05:02,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332373682] [2020-10-28 12:05:02,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:02,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:02,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187070599] [2020-10-28 12:05:02,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:02,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:02,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:02,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:02,062 INFO L87 Difference]: Start difference. First operand 8762 states and 10145 transitions. Second operand 7 states. [2020-10-28 12:05:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:05,575 INFO L93 Difference]: Finished difference Result 17542 states and 20316 transitions. [2020-10-28 12:05:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:05,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-10-28 12:05:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:05,598 INFO L225 Difference]: With dead ends: 17542 [2020-10-28 12:05:05,599 INFO L226 Difference]: Without dead ends: 8786 [2020-10-28 12:05:05,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:05:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8786 states. [2020-10-28 12:05:05,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8786 to 8768. [2020-10-28 12:05:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8768 states. [2020-10-28 12:05:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8768 states to 8768 states and 10141 transitions. [2020-10-28 12:05:05,842 INFO L78 Accepts]: Start accepts. Automaton has 8768 states and 10141 transitions. Word has length 394 [2020-10-28 12:05:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:05,842 INFO L481 AbstractCegarLoop]: Abstraction has 8768 states and 10141 transitions. [2020-10-28 12:05:05,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8768 states and 10141 transitions. [2020-10-28 12:05:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-28 12:05:05,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:05,852 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:05,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:05:05,852 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:05,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:05,853 INFO L82 PathProgramCache]: Analyzing trace with hash -491929746, now seen corresponding path program 1 times [2020-10-28 12:05:05,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:05,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673573375] [2020-10-28 12:05:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:06,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:06,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-28 12:05:06,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-28 12:05:06,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:06,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-28 12:05:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 12:05:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:06,918 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:05:06,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:06,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:06,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:06,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:06,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:05:06,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:06,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:06,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:06,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:07,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:07,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 12:05:07,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:07,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 12:05:07,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:07,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:07,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-28 12:05:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:07,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:07,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:07,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:05:07,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 12:05:07,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:07,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:05:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-28 12:05:07,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673573375] [2020-10-28 12:05:07,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:07,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:05:07,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705490512] [2020-10-28 12:05:07,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:05:07,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:07,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:05:07,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:05:07,747 INFO L87 Difference]: Start difference. First operand 8768 states and 10141 transitions. Second operand 5 states. [2020-10-28 12:05:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:10,301 INFO L93 Difference]: Finished difference Result 10107 states and 11623 transitions. [2020-10-28 12:05:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:10,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 396 [2020-10-28 12:05:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:10,326 INFO L225 Difference]: With dead ends: 10107 [2020-10-28 12:05:10,326 INFO L226 Difference]: Without dead ends: 10104 [2020-10-28 12:05:10,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:05:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10104 states. [2020-10-28 12:05:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10104 to 8768. [2020-10-28 12:05:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8768 states. [2020-10-28 12:05:10,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8768 states to 8768 states and 10141 transitions. [2020-10-28 12:05:10,524 INFO L78 Accepts]: Start accepts. Automaton has 8768 states and 10141 transitions. Word has length 396 [2020-10-28 12:05:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:10,525 INFO L481 AbstractCegarLoop]: Abstraction has 8768 states and 10141 transitions. [2020-10-28 12:05:10,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:05:10,525 INFO L276 IsEmpty]: Start isEmpty. Operand 8768 states and 10141 transitions. [2020-10-28 12:05:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-28 12:05:10,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:10,536 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, 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, 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] [2020-10-28 12:05:10,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:05:10,536 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash 123178825, now seen corresponding path program 1 times [2020-10-28 12:05:10,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:10,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355041218] [2020-10-28 12:05:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:10,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:11,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:11,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-28 12:05:11,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:11,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-28 12:05:11,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:11,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:05:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:05:11,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:11,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:11,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:11,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:11,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:11,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:11,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:05:11,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:11,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:11,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:11,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:11,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:11,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:11,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:11,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:05:11,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:11,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:11,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:11,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:11,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:11,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:11,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:05:11,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:11,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:05:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:11,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:05:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:11,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:05:11,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 12:05:11,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:11,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:05:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:05:12,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355041218] [2020-10-28 12:05:12,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:12,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:05:12,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015831548] [2020-10-28 12:05:12,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:05:12,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:12,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:05:12,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:05:12,157 INFO L87 Difference]: Start difference. First operand 8768 states and 10141 transitions. Second operand 8 states. [2020-10-28 12:05:14,558 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-28 12:05:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:17,409 INFO L93 Difference]: Finished difference Result 17541 states and 20242 transitions. [2020-10-28 12:05:17,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:05:17,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 429 [2020-10-28 12:05:17,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:17,424 INFO L225 Difference]: With dead ends: 17541 [2020-10-28 12:05:17,424 INFO L226 Difference]: Without dead ends: 8779 [2020-10-28 12:05:17,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:05:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8779 states. [2020-10-28 12:05:17,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8779 to 8382. [2020-10-28 12:05:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8382 states. [2020-10-28 12:05:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8382 states to 8382 states and 9654 transitions. [2020-10-28 12:05:17,611 INFO L78 Accepts]: Start accepts. Automaton has 8382 states and 9654 transitions. Word has length 429 [2020-10-28 12:05:17,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:17,612 INFO L481 AbstractCegarLoop]: Abstraction has 8382 states and 9654 transitions. [2020-10-28 12:05:17,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:05:17,612 INFO L276 IsEmpty]: Start isEmpty. Operand 8382 states and 9654 transitions. [2020-10-28 12:05:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-28 12:05:17,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:17,625 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 12:05:17,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:05:17,625 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash 801891719, now seen corresponding path program 1 times [2020-10-28 12:05:17,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:17,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922407983] [2020-10-28 12:05:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:17,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:18,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:18,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:18,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-28 12:05:18,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-10-28 12:05:18,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:18,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 418 [2020-10-28 12:05:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 12:05:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:19,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:19,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:19,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:19,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:19,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:19,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:19,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:05:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:05:19,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:19,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:05:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:19,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:19,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:05:19,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:19,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:05:19,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:19,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:19,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:19,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-28 12:05:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:19,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:19,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:19,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:05:19,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:05:19,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:19,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 12:05:19,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 183 proven. 3 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-28 12:05:19,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922407983] [2020-10-28 12:05:19,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:19,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:05:19,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748852541] [2020-10-28 12:05:19,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:05:19,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:19,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:05:19,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:05:19,555 INFO L87 Difference]: Start difference. First operand 8382 states and 9654 transitions. Second operand 5 states. [2020-10-28 12:05:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:22,838 INFO L93 Difference]: Finished difference Result 18877 states and 21951 transitions. [2020-10-28 12:05:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:22,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 472 [2020-10-28 12:05:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:22,862 INFO L225 Difference]: With dead ends: 18877 [2020-10-28 12:05:22,862 INFO L226 Difference]: Without dead ends: 10311 [2020-10-28 12:05:22,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:05:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10311 states. [2020-10-28 12:05:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10311 to 9158. [2020-10-28 12:05:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9158 states. [2020-10-28 12:05:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9158 states to 9158 states and 10542 transitions. [2020-10-28 12:05:23,070 INFO L78 Accepts]: Start accepts. Automaton has 9158 states and 10542 transitions. Word has length 472 [2020-10-28 12:05:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:23,071 INFO L481 AbstractCegarLoop]: Abstraction has 9158 states and 10542 transitions. [2020-10-28 12:05:23,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:05:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 9158 states and 10542 transitions. [2020-10-28 12:05:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-28 12:05:23,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:23,091 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:05:23,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:05:23,092 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:23,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:23,092 INFO L82 PathProgramCache]: Analyzing trace with hash 60376577, now seen corresponding path program 1 times [2020-10-28 12:05:23,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:23,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744802405] [2020-10-28 12:05:23,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:23,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:23,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:23,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-28 12:05:23,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:23,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-28 12:05:23,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:23,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-28 12:05:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:05:23,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:24,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:24,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:24,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:24,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:05:24,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:24,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:24,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:24,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:24,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:24,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:05:24,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 12:05:24,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:24,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:24,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:24,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:05:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:24,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:24,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:24,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:05:24,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 12:05:24,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:24,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 12:05:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:24,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-28 12:05:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:24,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:24,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:24,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:05:24,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:05:24,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:24,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:05:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-28 12:05:24,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744802405] [2020-10-28 12:05:24,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:24,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:24,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364698730] [2020-10-28 12:05:24,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:24,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:24,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:24,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:24,908 INFO L87 Difference]: Start difference. First operand 9158 states and 10542 transitions. Second operand 7 states. [2020-10-28 12:05:28,058 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 12:05:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:28,982 INFO L93 Difference]: Finished difference Result 19323 states and 22289 transitions. [2020-10-28 12:05:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:28,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 508 [2020-10-28 12:05:28,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:29,008 INFO L225 Difference]: With dead ends: 19323 [2020-10-28 12:05:29,008 INFO L226 Difference]: Without dead ends: 10171 [2020-10-28 12:05:29,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 12:05:29,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10171 states. [2020-10-28 12:05:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10171 to 9760. [2020-10-28 12:05:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9760 states. [2020-10-28 12:05:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9760 states to 9760 states and 11065 transitions. [2020-10-28 12:05:29,181 INFO L78 Accepts]: Start accepts. Automaton has 9760 states and 11065 transitions. Word has length 508 [2020-10-28 12:05:29,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:29,182 INFO L481 AbstractCegarLoop]: Abstraction has 9760 states and 11065 transitions. [2020-10-28 12:05:29,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9760 states and 11065 transitions. [2020-10-28 12:05:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-28 12:05:29,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:29,194 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 12:05:29,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:05:29,195 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:29,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:29,195 INFO L82 PathProgramCache]: Analyzing trace with hash 546773533, now seen corresponding path program 1 times [2020-10-28 12:05:29,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:29,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357833592] [2020-10-28 12:05:29,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:29,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:29,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 633 [2020-10-28 12:05:29,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:29,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-28 12:05:29,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:29,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-28 12:05:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:05:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:30,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:30,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:30,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:30,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:30,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:30,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:30,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:30,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:30,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:30,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:30,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:30,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:05:30,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:30,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:05:30,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:30,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:30,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:30,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:30,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:05:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:30,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:30,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:05:30,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:30,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:05:30,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:30,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 12:05:30,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-28 12:05:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:30,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:30,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:05:30,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 12:05:30,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:30,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:05:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:30,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-28 12:05:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:30,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:30,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:05:30,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:30,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 12:05:30,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:30,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-28 12:05:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 461 proven. 106 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2020-10-28 12:05:31,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357833592] [2020-10-28 12:05:31,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:31,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:31,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303813656] [2020-10-28 12:05:31,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:31,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:31,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:31,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:31,252 INFO L87 Difference]: Start difference. First operand 9760 states and 11065 transitions. Second operand 7 states. [2020-10-28 12:05:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:34,685 INFO L93 Difference]: Finished difference Result 21268 states and 24366 transitions. [2020-10-28 12:05:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:34,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 615 [2020-10-28 12:05:34,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:34,713 INFO L225 Difference]: With dead ends: 21268 [2020-10-28 12:05:34,714 INFO L226 Difference]: Without dead ends: 11514 [2020-10-28 12:05:34,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11514 states. [2020-10-28 12:05:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11514 to 10536. [2020-10-28 12:05:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10536 states. [2020-10-28 12:05:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 12011 transitions. [2020-10-28 12:05:34,891 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 12011 transitions. Word has length 615 [2020-10-28 12:05:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:34,891 INFO L481 AbstractCegarLoop]: Abstraction has 10536 states and 12011 transitions. [2020-10-28 12:05:34,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 12011 transitions. [2020-10-28 12:05:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-28 12:05:34,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:34,904 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, 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 12:05:34,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 12:05:34,904 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:34,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash -638306019, now seen corresponding path program 1 times [2020-10-28 12:05:34,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:34,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004214596] [2020-10-28 12:05:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:35,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:37,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:37,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 654 [2020-10-28 12:05:37,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:37,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2840 [2020-10-28 12:05:37,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:37,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:37,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:37,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-28 12:05:37,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 12:05:37,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:38,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:38,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:38,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:38,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:38,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:38,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:38,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:38,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:38,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:38,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:38,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:05:38,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:38,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:05:38,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:38,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:38,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:05:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:38,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:38,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:05:38,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 12:05:38,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:38,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:38,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:38,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:38,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 12:05:38,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:38,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-28 12:05:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:38,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 12:05:38,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 12:05:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:38,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 12:05:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:38,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 12:05:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:38,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:38,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 12:05:38,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:38,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:05:38,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:38,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 12:05:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:38,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 519 proven. 105 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2020-10-28 12:05:38,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004214596] [2020-10-28 12:05:38,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:38,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:38,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683501990] [2020-10-28 12:05:38,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:38,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:38,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:38,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:38,989 INFO L87 Difference]: Start difference. First operand 10536 states and 12011 transitions. Second operand 7 states. [2020-10-28 12:05:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:43,620 INFO L93 Difference]: Finished difference Result 22786 states and 26027 transitions. [2020-10-28 12:05:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:43,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 636 [2020-10-28 12:05:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:43,645 INFO L225 Difference]: With dead ends: 22786 [2020-10-28 12:05:43,645 INFO L226 Difference]: Without dead ends: 12256 [2020-10-28 12:05:43,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 12:05:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12256 states. [2020-10-28 12:05:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12256 to 12044. [2020-10-28 12:05:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12044 states. [2020-10-28 12:05:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12044 states to 12044 states and 13629 transitions. [2020-10-28 12:05:43,827 INFO L78 Accepts]: Start accepts. Automaton has 12044 states and 13629 transitions. Word has length 636 [2020-10-28 12:05:43,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:43,828 INFO L481 AbstractCegarLoop]: Abstraction has 12044 states and 13629 transitions. [2020-10-28 12:05:43,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 12044 states and 13629 transitions. [2020-10-28 12:05:43,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2020-10-28 12:05:43,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:43,936 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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 12:05:43,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 12:05:43,937 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:43,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:43,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1563349117, now seen corresponding path program 1 times [2020-10-28 12:05:43,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:43,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830192494] [2020-10-28 12:05:43,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:44,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:45,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:49,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:49,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 733 [2020-10-28 12:05:49,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:05:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 12:05:49,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:49,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 466 [2020-10-28 12:05:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:05:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:49,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:49,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:49,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:49,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:49,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:49,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:49,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:49,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:49,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:49,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:49,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:05:49,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:05:49,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:49,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:49,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:05:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:49,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:49,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:49,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:05:49,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:49,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:05:49,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:49,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:49,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:05:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:49,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:49,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:05:49,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:05:49,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:49,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:49,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:49,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:49,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:05:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:49,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:49,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:05:49,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 12:05:49,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:49,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:05:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:49,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-28 12:05:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:49,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:49,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 12:05:49,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:05:49,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:49,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:05:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-10-28 12:05:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:49,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:49,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:49,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:05:49,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:05:49,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:49,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-28 12:05:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 691 proven. 77 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2020-10-28 12:05:50,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830192494] [2020-10-28 12:05:50,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:50,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:50,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363778943] [2020-10-28 12:05:50,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:50,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:50,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:50,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:50,091 INFO L87 Difference]: Start difference. First operand 12044 states and 13629 transitions. Second operand 7 states. [2020-10-28 12:05:54,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:54,148 INFO L93 Difference]: Finished difference Result 24130 states and 27302 transitions. [2020-10-28 12:05:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:54,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 711 [2020-10-28 12:05:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:54,171 INFO L225 Difference]: With dead ends: 24130 [2020-10-28 12:05:54,171 INFO L226 Difference]: Without dead ends: 12092 [2020-10-28 12:05:54,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:54,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12092 states. [2020-10-28 12:05:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12092 to 11679. [2020-10-28 12:05:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11679 states. [2020-10-28 12:05:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11679 states to 11679 states and 13005 transitions. [2020-10-28 12:05:54,405 INFO L78 Accepts]: Start accepts. Automaton has 11679 states and 13005 transitions. Word has length 711 [2020-10-28 12:05:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:54,406 INFO L481 AbstractCegarLoop]: Abstraction has 11679 states and 13005 transitions. [2020-10-28 12:05:54,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 11679 states and 13005 transitions. [2020-10-28 12:05:54,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2020-10-28 12:05:54,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:54,421 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:54,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 12:05:54,422 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:54,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:54,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1112917502, now seen corresponding path program 1 times [2020-10-28 12:05:54,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:54,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002431793] [2020-10-28 12:05:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:54,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:55,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:55,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 737 [2020-10-28 12:05:55,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-28 12:05:55,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:55,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 441 [2020-10-28 12:05:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:05:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:55,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:55,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:55,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:55,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:55,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:55,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:55,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:55,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:55,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:55,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:55,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:05:55,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:55,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:55,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:05:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:55,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:55,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:55,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:05:55,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:55,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:05:55,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:55,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:55,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:05:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:55,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:55,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:55,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:05:55,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:55,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:05:55,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:55,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:55,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:55,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:55,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 12:05:55,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:55,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-28 12:05:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:55,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:56,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:56,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:05:56,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 12:05:56,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:56,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:05:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:56,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-28 12:05:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:56,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:56,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:05:56,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:05:56,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:56,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-28 12:05:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:56,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1460 backedges. 634 proven. 106 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2020-10-28 12:05:56,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002431793] [2020-10-28 12:05:56,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:56,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:56,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716569986] [2020-10-28 12:05:56,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:56,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:56,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:56,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:56,531 INFO L87 Difference]: Start difference. First operand 11679 states and 13005 transitions. Second operand 7 states. [2020-10-28 12:06:00,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:00,711 INFO L93 Difference]: Finished difference Result 25861 states and 28748 transitions. [2020-10-28 12:06:00,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:00,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 717 [2020-10-28 12:06:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:00,739 INFO L225 Difference]: With dead ends: 25861 [2020-10-28 12:06:00,739 INFO L226 Difference]: Without dead ends: 14188 [2020-10-28 12:06:00,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:00,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14188 states. [2020-10-28 12:06:00,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14188 to 12629. [2020-10-28 12:06:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12629 states. [2020-10-28 12:06:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12629 states to 12629 states and 14002 transitions. [2020-10-28 12:06:00,957 INFO L78 Accepts]: Start accepts. Automaton has 12629 states and 14002 transitions. Word has length 717 [2020-10-28 12:06:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:00,958 INFO L481 AbstractCegarLoop]: Abstraction has 12629 states and 14002 transitions. [2020-10-28 12:06:00,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand 12629 states and 14002 transitions. [2020-10-28 12:06:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2020-10-28 12:06:01,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:01,089 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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 12:06:01,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 12:06:01,089 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:01,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:01,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1479017707, now seen corresponding path program 1 times [2020-10-28 12:06:01,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:01,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913310100] [2020-10-28 12:06:01,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:06,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:06,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 762 [2020-10-28 12:06:06,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-28 12:06:06,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:06,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 12:06:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:06:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 461 [2020-10-28 12:06:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:06,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:06,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:06,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:06,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:06,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:06:06,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:06,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:06,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:06,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:06,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:06,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:06,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-28 12:06:06,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:06,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:06:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:07,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:07,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:06:07,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:07,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 12:06:07,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:07,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:07,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:06:07,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:07,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:06:07,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:06:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:07,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:07,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:07,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:07,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:06:07,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-28 12:06:07,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:07,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:06:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:07,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:06:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:07,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:07,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:06:07,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:07,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 12:06:07,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:07,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:07,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:07,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:07,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:06:07,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-28 12:06:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:07,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:07,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:06:07,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:07,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:06:07,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:07,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 12:06:07,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:07,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:07,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2020-10-28 12:06:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:07,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:07,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:06:07,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:07,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:06:07,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:07,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-28 12:06:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:07,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 692 proven. 780 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2020-10-28 12:06:08,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913310100] [2020-10-28 12:06:08,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:08,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 12:06:08,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418353720] [2020-10-28 12:06:08,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 12:06:08,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:08,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 12:06:08,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:06:08,428 INFO L87 Difference]: Start difference. First operand 12629 states and 14002 transitions. Second operand 10 states.