/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/Problem16_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:21:48,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:21:48,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:21:48,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:21:48,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:21:48,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:21:48,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:21:48,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:21:48,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:21:48,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:21:48,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:21:48,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:21:48,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:21:48,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:21:48,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:21:48,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:21:48,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:21:48,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:21:48,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:21:48,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:21:48,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:21:48,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:21:48,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:21:48,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:21:48,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:21:48,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:21:48,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:21:48,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:21:48,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:21:48,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:21:48,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:21:48,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:21:48,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:21:48,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:21:48,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:21:48,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:21:48,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:21:48,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:21:48,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:21:48,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:21:48,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:21:48,327 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 13:21:48,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:21:48,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:21:48,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:21:48,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:21:48,387 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:21:48,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:21:48,388 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:21:48,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:21:48,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:21:48,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:21:48,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:21:48,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:21:48,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:21:48,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:21:48,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:21:48,390 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:21:48,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:21:48,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:21:48,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:21:48,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:21:48,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:21:48,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:21:48,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:21:48,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:21:48,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:21:48,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:21:48,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:21:48,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:21:48,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:21:48,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:21:48,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:21:48,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:21:48,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:21:48,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:21:48,840 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:21:48,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label26.c [2020-10-28 13:21:48,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c3bde28e/de301f2d80554191879302fa3ae105ca/FLAGc86c9fbb3 [2020-10-28 13:21:49,761 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:21:49,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label26.c [2020-10-28 13:21:49,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c3bde28e/de301f2d80554191879302fa3ae105ca/FLAGc86c9fbb3 [2020-10-28 13:21:49,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c3bde28e/de301f2d80554191879302fa3ae105ca [2020-10-28 13:21:49,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:21:49,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:21:49,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:49,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:21:49,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:21:49,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:49" (1/1) ... [2020-10-28 13:21:49,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c2cc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:49, skipping insertion in model container [2020-10-28 13:21:49,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:49" (1/1) ... [2020-10-28 13:21:49,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:21:50,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:21:50,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:50,777 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:21:51,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:51,066 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:21:51,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:51 WrapperNode [2020-10-28 13:21:51,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:51,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:21:51,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:21:51,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:21:51,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:51" (1/1) ... [2020-10-28 13:21:51,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:51" (1/1) ... [2020-10-28 13:21:51,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:51" (1/1) ... [2020-10-28 13:21:51,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:51" (1/1) ... [2020-10-28 13:21:51,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:51" (1/1) ... [2020-10-28 13:21:51,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:51" (1/1) ... [2020-10-28 13:21:51,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:51" (1/1) ... [2020-10-28 13:21:51,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:21:51,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:21:51,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:21:51,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:21:51,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:51" (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 13:21:51,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:21:51,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:21:51,381 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:21:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:21:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:21:51,383 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:21:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:21:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:21:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:21:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:21:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:21:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:21:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:21:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:21:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:21:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:21:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:21:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:21:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:21:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:21:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:21:54,031 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:21:54,031 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:21:54,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:21:54 BoogieIcfgContainer [2020-10-28 13:21:54,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:21:54,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:21:54,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:21:54,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:21:54,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:21:49" (1/3) ... [2020-10-28 13:21:54,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2c6715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:21:54, skipping insertion in model container [2020-10-28 13:21:54,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:51" (2/3) ... [2020-10-28 13:21:54,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2c6715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:21:54, skipping insertion in model container [2020-10-28 13:21:54,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:21:54" (3/3) ... [2020-10-28 13:21:54,063 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label26.c [2020-10-28 13:21:54,079 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:21:54,086 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:21:54,100 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:21:54,155 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:21:54,155 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:21:54,156 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:21:54,156 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:21:54,156 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:21:54,156 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:21:54,156 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:21:54,156 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:21:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:21:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 13:21:54,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:54,214 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] [2020-10-28 13:21:54,214 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:54,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:54,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1356923972, now seen corresponding path program 1 times [2020-10-28 13:21:54,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:54,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958003274] [2020-10-28 13:21:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:54,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:54,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:54,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 13:21:54,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:54,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-28 13:21:54,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:54,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:21:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:21:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 13:21:54,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:21:55,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:55,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:55,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:55,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:21:55,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:55,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:21:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:55,188 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 13:21:55,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958003274] [2020-10-28 13:21:55,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:21:55,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:21:55,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481985006] [2020-10-28 13:21:55,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:21:55,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:55,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:21:55,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:21:55,217 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:22:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:00,251 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:22:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:22:00,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-28 13:22:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:00,278 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:22:00,278 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:22:00,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:22:00,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:22:00,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:22:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:22:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:22:00,451 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 42 [2020-10-28 13:22:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:00,451 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:22:00,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:22:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:22:00,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 13:22:00,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:00,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:00,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:22:00,461 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:00,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1064025956, now seen corresponding path program 1 times [2020-10-28 13:22:00,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:00,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578411433] [2020-10-28 13:22:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:01,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:01,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:01,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-10-28 13:22:01,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:01,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:22:01,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:01,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:01,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:01,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:01,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:01,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:01,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:22:01,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:01,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:01,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:01,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:01,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:01,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:01,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:22:01,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 13:22:01,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:01,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:22:01,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:22:02,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578411433] [2020-10-28 13:22:02,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:02,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:22:02,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123288603] [2020-10-28 13:22:02,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:02,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:02,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:02,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:02,074 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-28 13:22:07,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:07,503 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-28 13:22:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:22:07,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-28 13:22:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:07,516 INFO L225 Difference]: With dead ends: 2090 [2020-10-28 13:22:07,516 INFO L226 Difference]: Without dead ends: 1403 [2020-10-28 13:22:07,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:22:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-28 13:22:07,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-28 13:22:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-28 13:22:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1813 transitions. [2020-10-28 13:22:07,599 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1813 transitions. Word has length 118 [2020-10-28 13:22:07,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:07,602 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1813 transitions. [2020-10-28 13:22:07,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:07,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1813 transitions. [2020-10-28 13:22:07,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-28 13:22:07,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:07,618 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:22:07,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:22:07,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:07,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1655476138, now seen corresponding path program 1 times [2020-10-28 13:22:07,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:07,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713293447] [2020-10-28 13:22:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:08,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:08,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:09,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:12,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:12,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-28 13:22:12,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:22:12,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4403 [2020-10-28 13:22:12,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:12,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:22:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:22:12,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:12,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:12,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:12,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:12,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:12,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:22:12,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:12,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:12,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:12,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:12,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:22:12,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 13:22:12,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:12,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:22:12,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:12,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:22:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:12,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:12,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:22:12,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:12,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:22:12,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:12,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:22:12,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 101 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:22:12,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713293447] [2020-10-28 13:22:12,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:12,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:22:12,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723448780] [2020-10-28 13:22:12,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:22:12,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:12,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:22:12,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:22:12,803 INFO L87 Difference]: Start difference. First operand 1379 states and 1813 transitions. Second operand 8 states. [2020-10-28 13:22:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:18,908 INFO L93 Difference]: Finished difference Result 3499 states and 4774 transitions. [2020-10-28 13:22:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:22:18,911 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2020-10-28 13:22:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:18,926 INFO L225 Difference]: With dead ends: 3499 [2020-10-28 13:22:18,926 INFO L226 Difference]: Without dead ends: 2126 [2020-10-28 13:22:18,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 13:22:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2020-10-28 13:22:18,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2100. [2020-10-28 13:22:18,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-10-28 13:22:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2646 transitions. [2020-10-28 13:22:19,006 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2646 transitions. Word has length 205 [2020-10-28 13:22:19,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:19,006 INFO L481 AbstractCegarLoop]: Abstraction has 2100 states and 2646 transitions. [2020-10-28 13:22:19,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:22:19,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2646 transitions. [2020-10-28 13:22:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-28 13:22:19,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:19,011 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:22:19,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:22:19,012 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:19,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:19,012 INFO L82 PathProgramCache]: Analyzing trace with hash -925280122, now seen corresponding path program 1 times [2020-10-28 13:22:19,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:19,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681414055] [2020-10-28 13:22:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:20,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:23,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:23,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-28 13:22:23,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:22:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4099 [2020-10-28 13:22:23,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:23,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:22:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:22:23,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:23,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:23,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:23,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:23,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:23,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:23,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:22:23,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:23,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:23,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:23,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:23,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:23,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:22:23,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:23,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:23,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:22:23,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:22:23,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:23,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:23,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:23,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:23,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:22:23,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:22:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:23,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:23,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:23,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-28 13:22:23,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:23,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:23,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:22:23,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:22:24,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681414055] [2020-10-28 13:22:24,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:24,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:22:24,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760592995] [2020-10-28 13:22:24,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:22:24,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:24,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:22:24,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:22:24,235 INFO L87 Difference]: Start difference. First operand 2100 states and 2646 transitions. Second operand 8 states. [2020-10-28 13:22:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:32,866 INFO L93 Difference]: Finished difference Result 6308 states and 8365 transitions. [2020-10-28 13:22:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:22:32,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 271 [2020-10-28 13:22:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:32,923 INFO L225 Difference]: With dead ends: 6308 [2020-10-28 13:22:32,924 INFO L226 Difference]: Without dead ends: 4214 [2020-10-28 13:22:32,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:22:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2020-10-28 13:22:33,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4199. [2020-10-28 13:22:33,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4199 states. [2020-10-28 13:22:33,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 5134 transitions. [2020-10-28 13:22:33,075 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 5134 transitions. Word has length 271 [2020-10-28 13:22:33,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:33,076 INFO L481 AbstractCegarLoop]: Abstraction has 4199 states and 5134 transitions. [2020-10-28 13:22:33,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:22:33,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 5134 transitions. [2020-10-28 13:22:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-28 13:22:33,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:33,083 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:33,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:22:33,083 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:33,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:33,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1193369344, now seen corresponding path program 1 times [2020-10-28 13:22:33,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:33,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512190177] [2020-10-28 13:22:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:34,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:37,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:38,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:38,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:22:38,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:22:38,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 13:22:38,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:38,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:22:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 13:22:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:38,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:38,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:38,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:38,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:22:38,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:38,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:38,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:38,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:38,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:38,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:22:38,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:22:38,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:38,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:22:38,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:38,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:22:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:38,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:38,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:22:38,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:38,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 13:22:38,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:38,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:38,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:38,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:38,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:22:38,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:38,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-28 13:22:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:38,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:38,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:38,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:22:38,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:38,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:22:38,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:38,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:22:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 346 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 13:22:39,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512190177] [2020-10-28 13:22:39,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:39,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:22:39,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654688752] [2020-10-28 13:22:39,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:22:39,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:39,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:22:39,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:22:39,293 INFO L87 Difference]: Start difference. First operand 4199 states and 5134 transitions. Second operand 8 states. [2020-10-28 13:22:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:44,730 INFO L93 Difference]: Finished difference Result 10524 states and 13490 transitions. [2020-10-28 13:22:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:22:44,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 314 [2020-10-28 13:22:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:44,761 INFO L225 Difference]: With dead ends: 10524 [2020-10-28 13:22:44,761 INFO L226 Difference]: Without dead ends: 5583 [2020-10-28 13:22:44,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:22:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5583 states. [2020-10-28 13:22:44,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5583 to 5543. [2020-10-28 13:22:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5543 states. [2020-10-28 13:22:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5543 states to 5543 states and 6092 transitions. [2020-10-28 13:22:44,952 INFO L78 Accepts]: Start accepts. Automaton has 5543 states and 6092 transitions. Word has length 314 [2020-10-28 13:22:44,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:44,952 INFO L481 AbstractCegarLoop]: Abstraction has 5543 states and 6092 transitions. [2020-10-28 13:22:44,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:22:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5543 states and 6092 transitions. [2020-10-28 13:22:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-10-28 13:22:44,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:44,967 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:22:44,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:22:44,968 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:44,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:44,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1828540984, now seen corresponding path program 1 times [2020-10-28 13:22:44,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:44,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330977329] [2020-10-28 13:22:44,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:45,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:50,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:50,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-28 13:22:50,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:22:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 13:22:50,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:50,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:22:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:22:50,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:50,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:50,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:50,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:50,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:50,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:22:50,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:50,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:50,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:50,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:50,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:22:50,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-28 13:22:50,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:50,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:22:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:22:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:51,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:22:51,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-28 13:22:51,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:51,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:22:51,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:22:52,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330977329] [2020-10-28 13:22:52,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:52,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:52,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439787860] [2020-10-28 13:22:52,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:52,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:52,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:52,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:52,392 INFO L87 Difference]: Start difference. First operand 5543 states and 6092 transitions. Second operand 7 states. [2020-10-28 13:22:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:56,675 INFO L93 Difference]: Finished difference Result 10753 states and 11850 transitions. [2020-10-28 13:22:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:22:56,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 538 [2020-10-28 13:22:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:56,706 INFO L225 Difference]: With dead ends: 10753 [2020-10-28 13:22:56,706 INFO L226 Difference]: Without dead ends: 5553 [2020-10-28 13:22:56,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 13:22:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5553 states. [2020-10-28 13:22:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5553 to 5545. [2020-10-28 13:22:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5545 states. [2020-10-28 13:22:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 6088 transitions. [2020-10-28 13:22:56,859 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 6088 transitions. Word has length 538 [2020-10-28 13:22:56,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:56,860 INFO L481 AbstractCegarLoop]: Abstraction has 5545 states and 6088 transitions. [2020-10-28 13:22:56,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 6088 transitions. [2020-10-28 13:22:56,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-10-28 13:22:56,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:56,877 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:56,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:22:56,877 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:56,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:56,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1733032800, now seen corresponding path program 1 times [2020-10-28 13:22:56,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:56,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880521010] [2020-10-28 13:22:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:57,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:02,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 622 [2020-10-28 13:23:02,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:02,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-28 13:23:02,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:02,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-28 13:23:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:23:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:02,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:02,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:02,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:02,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:02,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:02,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:02,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:02,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:02,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:02,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:02,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:02,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:02,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:02,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:23:02,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:02,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:02,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:02,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:02,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:02,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 13:23:02,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:02,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:23:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:02,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:23:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:02,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:23:02,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 13:23:02,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:02,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:23:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 426 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-28 13:23:03,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880521010] [2020-10-28 13:23:03,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:03,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:03,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994121942] [2020-10-28 13:23:03,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:03,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:03,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:03,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:03,333 INFO L87 Difference]: Start difference. First operand 5545 states and 6088 transitions. Second operand 7 states. [2020-10-28 13:23:09,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:09,519 INFO L93 Difference]: Finished difference Result 13174 states and 14673 transitions. [2020-10-28 13:23:09,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:23:09,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 606 [2020-10-28 13:23:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:09,566 INFO L225 Difference]: With dead ends: 13174 [2020-10-28 13:23:09,566 INFO L226 Difference]: Without dead ends: 7972 [2020-10-28 13:23:09,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 13:23:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7972 states. [2020-10-28 13:23:09,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7972 to 7964. [2020-10-28 13:23:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7964 states. [2020-10-28 13:23:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7964 states to 7964 states and 8734 transitions. [2020-10-28 13:23:09,775 INFO L78 Accepts]: Start accepts. Automaton has 7964 states and 8734 transitions. Word has length 606 [2020-10-28 13:23:09,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:09,777 INFO L481 AbstractCegarLoop]: Abstraction has 7964 states and 8734 transitions. [2020-10-28 13:23:09,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 7964 states and 8734 transitions. [2020-10-28 13:23:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2020-10-28 13:23:09,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:09,797 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:09,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:23:09,797 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:09,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:09,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1536841342, now seen corresponding path program 1 times [2020-10-28 13:23:09,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:09,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217087079] [2020-10-28 13:23:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:09,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:11,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:11,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 625 [2020-10-28 13:23:11,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:23:11,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1882 [2020-10-28 13:23:11,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:11,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:11,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:11,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-28 13:23:11,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:23:11,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:11,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:11,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:11,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:11,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:11,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:11,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:11,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:12,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:12,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:12,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:23:12,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:23:12,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:12,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:12,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:23:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:12,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:12,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:23:12,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:12,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 13:23:12,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:12,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:23:12,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:23:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:23:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:12,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:23:12,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:23:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:12,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:23:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 421 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 13:23:12,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217087079] [2020-10-28 13:23:12,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:12,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:12,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111511872] [2020-10-28 13:23:12,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:12,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:12,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:12,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:12,976 INFO L87 Difference]: Start difference. First operand 7964 states and 8734 transitions. Second operand 7 states. [2020-10-28 13:23:17,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:17,504 INFO L93 Difference]: Finished difference Result 17960 states and 19966 transitions. [2020-10-28 13:23:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:23:17,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 609 [2020-10-28 13:23:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:17,557 INFO L225 Difference]: With dead ends: 17960 [2020-10-28 13:23:17,557 INFO L226 Difference]: Without dead ends: 10688 [2020-10-28 13:23:17,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:23:17,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10688 states. [2020-10-28 13:23:17,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10688 to 10678. [2020-10-28 13:23:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10678 states. [2020-10-28 13:23:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10678 states to 10678 states and 11590 transitions. [2020-10-28 13:23:17,824 INFO L78 Accepts]: Start accepts. Automaton has 10678 states and 11590 transitions. Word has length 609 [2020-10-28 13:23:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:17,825 INFO L481 AbstractCegarLoop]: Abstraction has 10678 states and 11590 transitions. [2020-10-28 13:23:17,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:17,825 INFO L276 IsEmpty]: Start isEmpty. Operand 10678 states and 11590 transitions. [2020-10-28 13:23:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2020-10-28 13:23:17,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:17,837 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:17,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:23:17,837 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:17,838 INFO L82 PathProgramCache]: Analyzing trace with hash -475047056, now seen corresponding path program 1 times [2020-10-28 13:23:17,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:17,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927617845] [2020-10-28 13:23:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:18,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:19,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:21,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:21,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 646 [2020-10-28 13:23:21,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3860 [2020-10-28 13:23:21,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:21,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-28 13:23:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:23:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:22,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:22,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:22,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:22,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:22,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:22,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:22,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:22,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:22,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:22,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:23:22,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:22,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:22,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:22,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:22,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:22,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:23:22,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:22,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:22,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:22,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:22,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:23:22,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:22,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:23:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:22,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:22,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:22,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 13:23:22,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:22,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 13:23:22,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:22,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:23:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 450 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-28 13:23:23,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927617845] [2020-10-28 13:23:23,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:23,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:23:23,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010198024] [2020-10-28 13:23:23,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:23:23,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:23,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:23:23,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:23:23,166 INFO L87 Difference]: Start difference. First operand 10678 states and 11590 transitions. Second operand 8 states. [2020-10-28 13:23:29,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:29,665 INFO L93 Difference]: Finished difference Result 24736 states and 27364 transitions. [2020-10-28 13:23:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:23:29,667 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 630 [2020-10-28 13:23:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:29,718 INFO L225 Difference]: With dead ends: 24736 [2020-10-28 13:23:29,718 INFO L226 Difference]: Without dead ends: 14750 [2020-10-28 13:23:29,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:23:29,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14750 states. [2020-10-28 13:23:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14750 to 14068. [2020-10-28 13:23:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14068 states. [2020-10-28 13:23:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14068 states to 14068 states and 15396 transitions. [2020-10-28 13:23:30,131 INFO L78 Accepts]: Start accepts. Automaton has 14068 states and 15396 transitions. Word has length 630 [2020-10-28 13:23:30,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:30,132 INFO L481 AbstractCegarLoop]: Abstraction has 14068 states and 15396 transitions. [2020-10-28 13:23:30,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:23:30,132 INFO L276 IsEmpty]: Start isEmpty. Operand 14068 states and 15396 transitions. [2020-10-28 13:23:30,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-10-28 13:23:30,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:30,146 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 13:23:30,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:23:30,146 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:30,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:30,147 INFO L82 PathProgramCache]: Analyzing trace with hash -936891242, now seen corresponding path program 1 times [2020-10-28 13:23:30,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:30,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831063151] [2020-10-28 13:23:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:30,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:30,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 685 [2020-10-28 13:23:30,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:30,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-28 13:23:30,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:30,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:23:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 13:23:30,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:31,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:31,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:31,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:31,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:23:31,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:31,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:31,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:31,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:31,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:31,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:31,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:23:31,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:31,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:31,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:31,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:31,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:31,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:23:31,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:31,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:23:31,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:31,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:31,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:31,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:31,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:31,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:31,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:23:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:31,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:31,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:23:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:23:31,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:31,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:23:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2020-10-28 13:23:31,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831063151] [2020-10-28 13:23:31,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:31,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:23:31,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323942301] [2020-10-28 13:23:31,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:23:31,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:31,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:23:31,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:23:31,745 INFO L87 Difference]: Start difference. First operand 14068 states and 15396 transitions. Second operand 5 states. [2020-10-28 13:23:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:34,955 INFO L93 Difference]: Finished difference Result 29803 states and 32700 transitions. [2020-10-28 13:23:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:23:34,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 669 [2020-10-28 13:23:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:35,011 INFO L225 Difference]: With dead ends: 29803 [2020-10-28 13:23:35,011 INFO L226 Difference]: Without dead ends: 16429 [2020-10-28 13:23:35,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 13:23:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16429 states. [2020-10-28 13:23:35,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16429 to 16429. [2020-10-28 13:23:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16429 states. [2020-10-28 13:23:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16429 states to 16429 states and 17895 transitions. [2020-10-28 13:23:35,380 INFO L78 Accepts]: Start accepts. Automaton has 16429 states and 17895 transitions. Word has length 669 [2020-10-28 13:23:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:35,381 INFO L481 AbstractCegarLoop]: Abstraction has 16429 states and 17895 transitions. [2020-10-28 13:23:35,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:23:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 16429 states and 17895 transitions. [2020-10-28 13:23:35,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2020-10-28 13:23:35,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:35,420 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:23:35,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:23:35,420 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:35,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:35,421 INFO L82 PathProgramCache]: Analyzing trace with hash -387585248, now seen corresponding path program 1 times [2020-10-28 13:23:35,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:35,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302980681] [2020-10-28 13:23:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:35,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:39,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:40,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:40,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1174 [2020-10-28 13:23:40,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 13:23:40,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:40,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 741 [2020-10-28 13:23:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:23:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:40,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:40,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:40,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:40,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:40,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:40,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:40,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:40,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:40,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:40,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:41,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:41,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:41,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:41,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:23:41,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:41,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:41,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:41,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:41,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:41,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:41,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:23:41,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:41,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:41,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:41,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:23:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:41,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:41,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:41,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:41,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:23:41,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:41,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:41,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:23:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:41,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:41,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:23:41,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 13:23:41,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:41,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:23:41,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:41,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-28 13:23:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:41,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:41,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:41,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:23:41,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-28 13:23:41,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:41,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:23:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-28 13:23:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:42,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:42,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:42,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:23:42,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:23:42,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:42,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:42,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:23:42,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:42,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 948 proven. 111 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2020-10-28 13:23:43,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302980681] [2020-10-28 13:23:43,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:43,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:23:43,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248974590] [2020-10-28 13:23:43,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:23:43,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:43,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:23:43,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:23:43,412 INFO L87 Difference]: Start difference. First operand 16429 states and 17895 transitions. Second operand 8 states. [2020-10-28 13:23:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:50,103 INFO L93 Difference]: Finished difference Result 34540 states and 37639 transitions. [2020-10-28 13:23:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:23:50,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1152 [2020-10-28 13:23:50,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:50,164 INFO L225 Difference]: With dead ends: 34540 [2020-10-28 13:23:50,164 INFO L226 Difference]: Without dead ends: 18805 [2020-10-28 13:23:50,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:23:50,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18805 states. [2020-10-28 13:23:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18805 to 18129. [2020-10-28 13:23:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18129 states. [2020-10-28 13:23:50,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18129 states to 18129 states and 19735 transitions. [2020-10-28 13:23:50,542 INFO L78 Accepts]: Start accepts. Automaton has 18129 states and 19735 transitions. Word has length 1152 [2020-10-28 13:23:50,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:50,544 INFO L481 AbstractCegarLoop]: Abstraction has 18129 states and 19735 transitions. [2020-10-28 13:23:50,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:23:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 18129 states and 19735 transitions. [2020-10-28 13:23:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1290 [2020-10-28 13:23:50,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:50,588 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:50,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:23:50,588 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:50,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1510550930, now seen corresponding path program 1 times [2020-10-28 13:23:50,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:50,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045049216] [2020-10-28 13:23:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:51,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:51,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:52,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:55,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:55,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1313 [2020-10-28 13:23:55,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:23:55,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 13:23:55,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:55,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 880 [2020-10-28 13:23:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:23:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:56,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:56,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:56,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:56,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:56,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:56,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:56,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:56,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:56,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:56,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:56,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:23:56,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:56,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:56,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:56,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:56,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:23:56,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:56,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:56,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:23:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:56,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:56,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:56,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:23:56,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:56,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:56,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:56,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:23:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:56,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:23:56,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:23:56,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:56,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:56,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-28 13:23:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:56,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:23:56,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:56,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-28 13:23:56,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:56,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-28 13:23:56,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:56,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 870 [2020-10-28 13:23:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:57,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:57,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:57,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:23:57,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 13:23:57,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:57,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:23:57,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:57,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1143 [2020-10-28 13:23:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:57,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:57,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:57,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:23:57,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:23:57,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:57,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:23:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:57,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2960 backedges. 1125 proven. 111 refuted. 0 times theorem prover too weak. 1724 trivial. 0 not checked. [2020-10-28 13:23:58,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045049216] [2020-10-28 13:23:58,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:58,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:58,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682645727] [2020-10-28 13:23:58,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:58,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:58,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:58,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:58,266 INFO L87 Difference]: Start difference. First operand 18129 states and 19735 transitions. Second operand 7 states. [2020-10-28 13:24:04,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:04,010 INFO L93 Difference]: Finished difference Result 36238 states and 39458 transitions. [2020-10-28 13:24:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:24:04,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1289 [2020-10-28 13:24:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:04,060 INFO L225 Difference]: With dead ends: 36238 [2020-10-28 13:24:04,060 INFO L226 Difference]: Without dead ends: 18803 [2020-10-28 13:24:04,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 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 13:24:04,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18803 states. [2020-10-28 13:24:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18803 to 18466. [2020-10-28 13:24:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18466 states. [2020-10-28 13:24:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18466 states to 18466 states and 20048 transitions. [2020-10-28 13:24:04,444 INFO L78 Accepts]: Start accepts. Automaton has 18466 states and 20048 transitions. Word has length 1289 [2020-10-28 13:24:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:04,445 INFO L481 AbstractCegarLoop]: Abstraction has 18466 states and 20048 transitions. [2020-10-28 13:24:04,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 18466 states and 20048 transitions. [2020-10-28 13:24:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1331 [2020-10-28 13:24:04,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:04,487 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, 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, 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:24:04,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:24:04,488 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:04,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:04,489 INFO L82 PathProgramCache]: Analyzing trace with hash -249503676, now seen corresponding path program 1 times [2020-10-28 13:24:04,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:04,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308675244] [2020-10-28 13:24:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:07,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:09,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:09,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1352 [2020-10-28 13:24:09,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:24:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-28 13:24:09,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:09,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:24:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-28 13:24:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:09,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:10,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:10,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:10,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:10,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:10,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:24:10,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:10,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:10,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:10,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:10,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:10,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:10,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:10,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:24:10,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:10,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:10,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:10,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:10,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:10,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:24:10,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:24:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:10,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:10,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:24:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:10,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:10,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:10,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:24:10,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:10,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:24:10,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:10,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:24:10,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:10,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:24:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:10,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:10,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:10,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-28 13:24:10,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-28 13:24:10,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:10,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-28 13:24:10,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-28 13:24:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:11,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:11,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:24:11,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:24:11,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:11,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:11,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:11,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:24:11,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:11,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:11,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1184 [2020-10-28 13:24:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:11,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:11,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:24:11,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:24:11,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:11,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:24:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:11,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2842 backedges. 856 proven. 381 refuted. 0 times theorem prover too weak. 1605 trivial. 0 not checked. [2020-10-28 13:24:12,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308675244] [2020-10-28 13:24:12,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:12,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:12,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456355925] [2020-10-28 13:24:12,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:12,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:12,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:12,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:12,397 INFO L87 Difference]: Start difference. First operand 18466 states and 20048 transitions. Second operand 7 states. [2020-10-28 13:24:16,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:16,587 INFO L93 Difference]: Finished difference Result 36247 states and 39399 transitions. [2020-10-28 13:24:16,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:24:16,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1330 [2020-10-28 13:24:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:16,632 INFO L225 Difference]: With dead ends: 36247 [2020-10-28 13:24:16,632 INFO L226 Difference]: Without dead ends: 18475 [2020-10-28 13:24:16,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:24:16,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18475 states. [2020-10-28 13:24:17,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18475 to 18469. [2020-10-28 13:24:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18469 states. [2020-10-28 13:24:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18469 states to 18469 states and 19879 transitions. [2020-10-28 13:24:17,088 INFO L78 Accepts]: Start accepts. Automaton has 18469 states and 19879 transitions. Word has length 1330 [2020-10-28 13:24:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:17,089 INFO L481 AbstractCegarLoop]: Abstraction has 18469 states and 19879 transitions. [2020-10-28 13:24:17,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 18469 states and 19879 transitions. [2020-10-28 13:24:17,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1354 [2020-10-28 13:24:17,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:17,131 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, 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, 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:24:17,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:24:17,132 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:17,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash -116674586, now seen corresponding path program 1 times [2020-10-28 13:24:17,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:17,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435376598] [2020-10-28 13:24:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:17,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:18,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:22,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:22,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1375 [2020-10-28 13:24:22,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:24:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 13:24:22,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:22,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 942 [2020-10-28 13:24:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:24:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:22,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:22,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:22,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:22,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:22,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:22,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:22,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:22,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:22,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:22,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:22,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:22,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:22,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:22,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:24:22,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:22,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:22,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:23,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:24:23,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:23,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:23,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:24:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:23,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:23,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:24:23,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:24:23,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:23,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:23,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:23,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2020-10-28 13:24:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:23,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:23,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-28 13:24:23,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 13:24:23,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:23,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-28 13:24:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:23,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 934 [2020-10-28 13:24:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:23,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:23,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:23,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:24:23,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:23,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-28 13:24:23,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:23,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:23,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:24:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1207 [2020-10-28 13:24:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:24,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:24,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:24:24,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:24:24,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:24,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:24:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 1146 proven. 111 refuted. 0 times theorem prover too weak. 1643 trivial. 0 not checked. [2020-10-28 13:24:25,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435376598] [2020-10-28 13:24:25,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:25,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:24:25,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193201205] [2020-10-28 13:24:25,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:24:25,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:25,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:24:25,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:24:25,712 INFO L87 Difference]: Start difference. First operand 18469 states and 19879 transitions. Second operand 8 states. [2020-10-28 13:24:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:31,863 INFO L93 Difference]: Finished difference Result 38605 states and 41601 transitions. [2020-10-28 13:24:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:24:31,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1353 [2020-10-28 13:24:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:31,910 INFO L225 Difference]: With dead ends: 38605 [2020-10-28 13:24:31,910 INFO L226 Difference]: Without dead ends: 20830 [2020-10-28 13:24:31,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:24:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20830 states. [2020-10-28 13:24:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20830 to 20830. [2020-10-28 13:24:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20830 states. [2020-10-28 13:24:32,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20830 states to 20830 states and 22311 transitions. [2020-10-28 13:24:32,300 INFO L78 Accepts]: Start accepts. Automaton has 20830 states and 22311 transitions. Word has length 1353 [2020-10-28 13:24:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:32,301 INFO L481 AbstractCegarLoop]: Abstraction has 20830 states and 22311 transitions. [2020-10-28 13:24:32,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:24:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 20830 states and 22311 transitions. [2020-10-28 13:24:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1393 [2020-10-28 13:24:32,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:32,342 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:32,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:24:32,342 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:32,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1565527912, now seen corresponding path program 1 times [2020-10-28 13:24:32,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:32,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754758605] [2020-10-28 13:24:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:33,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:33,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:37,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:37,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1418 [2020-10-28 13:24:37,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:24:37,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-28 13:24:37,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:37,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 733 [2020-10-28 13:24:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:24:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:37,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:37,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:37,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:37,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:37,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:37,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:37,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:37,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:37,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:37,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:37,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:38,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:38,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:38,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:24:38,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:38,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:38,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:38,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:38,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:38,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:38,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:38,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:24:38,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:38,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:24:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:38,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:38,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:38,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:38,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:24:38,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:38,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:38,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:24:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:38,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:38,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:24:38,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:38,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:24:38,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:38,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:38,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-28 13:24:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:38,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:38,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:38,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:24:38,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:38,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:24:38,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:38,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:24:38,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:38,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-28 13:24:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:38,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:38,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:38,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:24:38,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:38,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-28 13:24:38,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:38,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:38,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:38,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:38,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:24:38,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:39,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 973 [2020-10-28 13:24:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:39,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:39,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:39,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:24:39,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:39,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:24:39,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:39,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:24:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:39,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1246 [2020-10-28 13:24:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:39,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:39,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:39,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:24:39,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:24:39,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:39,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:24:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3739 backedges. 1032 proven. 358 refuted. 0 times theorem prover too weak. 2349 trivial. 0 not checked. [2020-10-28 13:24:41,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754758605] [2020-10-28 13:24:41,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:41,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:24:41,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288934611] [2020-10-28 13:24:41,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:24:41,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:41,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:24:41,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:24:41,113 INFO L87 Difference]: Start difference. First operand 20830 states and 22311 transitions. Second operand 8 states. [2020-10-28 13:24:47,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:47,306 INFO L93 Difference]: Finished difference Result 43337 states and 46369 transitions. [2020-10-28 13:24:47,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:24:47,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1392 [2020-10-28 13:24:47,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:47,349 INFO L225 Difference]: With dead ends: 43337 [2020-10-28 13:24:47,350 INFO L226 Difference]: Without dead ends: 23201 [2020-10-28 13:24:47,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:24:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23201 states. [2020-10-28 13:24:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23201 to 22527. [2020-10-28 13:24:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22527 states. [2020-10-28 13:24:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22527 states to 22527 states and 24070 transitions. [2020-10-28 13:24:47,761 INFO L78 Accepts]: Start accepts. Automaton has 22527 states and 24070 transitions. Word has length 1392 [2020-10-28 13:24:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:47,762 INFO L481 AbstractCegarLoop]: Abstraction has 22527 states and 24070 transitions. [2020-10-28 13:24:47,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:24:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 22527 states and 24070 transitions. [2020-10-28 13:24:47,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1432 [2020-10-28 13:24:47,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:47,795 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:24:47,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:24:47,796 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:47,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:47,797 INFO L82 PathProgramCache]: Analyzing trace with hash -460794414, now seen corresponding path program 1 times [2020-10-28 13:24:47,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:47,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276131415] [2020-10-28 13:24:47,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:53,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:53,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1457 [2020-10-28 13:24:53,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:24:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5245 [2020-10-28 13:24:53,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:53,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:24:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:24:53,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:53,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:53,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:53,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:53,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:53,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:53,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:53,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:53,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:24:53,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:53,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:24:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:53,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:53,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:53,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:53,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:53,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:24:53,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:53,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:24:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:53,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:24:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:53,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:54,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:24:54,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:24:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:24:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:24:54,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:24:54,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 13:24:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-28 13:24:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:24:54,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:24:54,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-28 13:24:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 870 [2020-10-28 13:24:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:24:54,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:24:54,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:24:54,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1012 [2020-10-28 13:24:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:24:54,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:24:54,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:24:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1285 [2020-10-28 13:24:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:24:54,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:24:54,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:24:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3873 backedges. 455 proven. 761 refuted. 0 times theorem prover too weak. 2657 trivial. 0 not checked. [2020-10-28 13:24:56,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276131415] [2020-10-28 13:24:56,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:56,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:56,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850967483] [2020-10-28 13:24:56,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:56,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:56,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:56,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:56,187 INFO L87 Difference]: Start difference. First operand 22527 states and 24070 transitions. Second operand 7 states. [2020-10-28 13:25:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:00,879 INFO L93 Difference]: Finished difference Result 44701 states and 47787 transitions. [2020-10-28 13:25:00,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:25:00,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1431 [2020-10-28 13:25:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:00,924 INFO L225 Difference]: With dead ends: 44701 [2020-10-28 13:25:00,924 INFO L226 Difference]: Without dead ends: 22517 [2020-10-28 13:25:00,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:25:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22517 states. [2020-10-28 13:25:01,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22517 to 22180. [2020-10-28 13:25:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22180 states. [2020-10-28 13:25:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22180 states to 22180 states and 23635 transitions. [2020-10-28 13:25:01,294 INFO L78 Accepts]: Start accepts. Automaton has 22180 states and 23635 transitions. Word has length 1431 [2020-10-28 13:25:01,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:01,295 INFO L481 AbstractCegarLoop]: Abstraction has 22180 states and 23635 transitions. [2020-10-28 13:25:01,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:01,295 INFO L276 IsEmpty]: Start isEmpty. Operand 22180 states and 23635 transitions. [2020-10-28 13:25:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1493 [2020-10-28 13:25:01,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:01,322 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 13:25:01,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:25:01,322 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:01,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:01,323 INFO L82 PathProgramCache]: Analyzing trace with hash 393977440, now seen corresponding path program 1 times [2020-10-28 13:25:01,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:01,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128862101] [2020-10-28 13:25:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:06,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1518 [2020-10-28 13:25:06,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:25:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-28 13:25:06,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:06,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:25:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:25:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:06,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:06,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:06,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:06,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:25:06,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:06,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:06,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:06,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:25:06,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:25:06,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:06,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:06,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:25:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:07,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:25:07,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:25:07,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:07,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:25:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:25:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:07,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:25:07,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-28 13:25:07,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:07,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:25:07,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:25:07,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:25:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:07,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:25:07,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:07,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:25:07,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:07,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 13:25:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:07,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:25:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:08,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:08,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:08,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:25:08,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 13:25:08,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:08,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-28 13:25:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:08,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 931 [2020-10-28 13:25:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:08,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:08,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:25:08,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:08,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:25:08,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:08,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:25:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:08,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1073 [2020-10-28 13:25:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:08,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:08,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:08,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:25:08,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:25:08,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:08,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:25:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:08,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:08,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1346 [2020-10-28 13:25:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:08,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:08,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:25:08,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:25:08,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:08,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:25:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4056 backedges. 569 proven. 556 refuted. 0 times theorem prover too weak. 2931 trivial. 0 not checked. [2020-10-28 13:25:09,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128862101] [2020-10-28 13:25:09,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:09,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:25:09,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652781016] [2020-10-28 13:25:09,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:25:09,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:09,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:25:09,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:25:09,978 INFO L87 Difference]: Start difference. First operand 22180 states and 23635 transitions. Second operand 7 states. [2020-10-28 13:25:14,115 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:25:15,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:15,295 INFO L93 Difference]: Finished difference Result 45037 states and 48003 transitions. [2020-10-28 13:25:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:25:15,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1492 [2020-10-28 13:25:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:15,338 INFO L225 Difference]: With dead ends: 45037 [2020-10-28 13:25:15,338 INFO L226 Difference]: Without dead ends: 23541 [2020-10-28 13:25:15,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:25:15,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23541 states. [2020-10-28 13:25:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23541 to 23537. [2020-10-28 13:25:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23537 states. [2020-10-28 13:25:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23537 states to 23537 states and 25034 transitions. [2020-10-28 13:25:15,636 INFO L78 Accepts]: Start accepts. Automaton has 23537 states and 25034 transitions. Word has length 1492 [2020-10-28 13:25:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:15,637 INFO L481 AbstractCegarLoop]: Abstraction has 23537 states and 25034 transitions. [2020-10-28 13:25:15,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 23537 states and 25034 transitions. [2020-10-28 13:25:15,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1495 [2020-10-28 13:25:15,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:15,664 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 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 13:25:15,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:25:15,664 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:15,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:15,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1847130468, now seen corresponding path program 1 times [2020-10-28 13:25:15,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:15,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647278760] [2020-10-28 13:25:15,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:20,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:20,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1520 [2020-10-28 13:25:20,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:25:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-28 13:25:20,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:20,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 679 [2020-10-28 13:25:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:25:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:21,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:21,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:21,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:21,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:21,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:25:21,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:21,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:21,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:21,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:21,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:21,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:25:21,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:25:21,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:21,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:21,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:25:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:21,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:21,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:21,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:25:21,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:21,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:25:21,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:21,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:21,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:21,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:21,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:21,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:21,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:25:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:21,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:21,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:25:21,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:25:21,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:21,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:21,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-28 13:25:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:21,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:21,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:25:21,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:21,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:25:21,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:21,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:25:21,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0