/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_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:18:59,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:18:59,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:18:59,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:18:59,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:18:59,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:18:59,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:18:59,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:18:59,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:18:59,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:18:59,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:18:59,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:18:59,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:18:59,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:18:59,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:18:59,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:18:59,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:18:59,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:18:59,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:18:59,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:18:59,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:18:59,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:18:59,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:18:59,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:18:59,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:18:59,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:18:59,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:18:59,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:18:59,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:18:59,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:18:59,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:18:59,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:18:59,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:18:59,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:18:59,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:18:59,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:18:59,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:18:59,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:18:59,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:18:59,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:18:59,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:18:59,247 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 13:18:59,280 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:18:59,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:18:59,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:18:59,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:18:59,286 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:18:59,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:18:59,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:18:59,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:18:59,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:18:59,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:18:59,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:18:59,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:18:59,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:18:59,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:18:59,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:18:59,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:18:59,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:18:59,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:18:59,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:18:59,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:18:59,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:18:59,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:18:59,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:18:59,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:18:59,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:18:59,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:18:59,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:18:59,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:18:59,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:18:59,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:18:59,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:18:59,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:19:00,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:19:00,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:19:00,005 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:19:00,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label19.c [2020-10-28 13:19:00,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63c396396/937e9554b1d94a5d818a82eb2d90dd29/FLAGd6bdebe72 [2020-10-28 13:19:01,045 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:19:01,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label19.c [2020-10-28 13:19:01,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63c396396/937e9554b1d94a5d818a82eb2d90dd29/FLAGd6bdebe72 [2020-10-28 13:19:01,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63c396396/937e9554b1d94a5d818a82eb2d90dd29 [2020-10-28 13:19:01,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:19:01,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:19:01,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:19:01,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:19:01,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:19:01,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:19:01" (1/1) ... [2020-10-28 13:19:01,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9edf8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:01, skipping insertion in model container [2020-10-28 13:19:01,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:19:01" (1/1) ... [2020-10-28 13:19:01,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:19:01,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:19:01,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:19:01,980 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:19:02,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:19:02,255 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:19:02,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:02 WrapperNode [2020-10-28 13:19:02,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:19:02,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:19:02,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:19:02,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:19:02,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:02" (1/1) ... [2020-10-28 13:19:02,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:02" (1/1) ... [2020-10-28 13:19:02,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:02" (1/1) ... [2020-10-28 13:19:02,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:02" (1/1) ... [2020-10-28 13:19:02,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:02" (1/1) ... [2020-10-28 13:19:02,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:02" (1/1) ... [2020-10-28 13:19:02,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:02" (1/1) ... [2020-10-28 13:19:02,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:19:02,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:19:02,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:19:02,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:19:02,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:02" (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 13:19:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:19:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:19:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:19:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:19:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:19:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:19:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:19:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:19:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:19:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:19:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:19:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:19:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:19:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:19:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:19:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:19:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:19:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:19:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:19:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:19:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:19:05,517 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:19:05,518 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:19:05,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:19:05 BoogieIcfgContainer [2020-10-28 13:19:05,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:19:05,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:19:05,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:19:05,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:19:05,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:19:01" (1/3) ... [2020-10-28 13:19:05,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dad31aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:19:05, skipping insertion in model container [2020-10-28 13:19:05,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:02" (2/3) ... [2020-10-28 13:19:05,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dad31aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:19:05, skipping insertion in model container [2020-10-28 13:19:05,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:19:05" (3/3) ... [2020-10-28 13:19:05,531 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label19.c [2020-10-28 13:19:05,545 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:19:05,552 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:19:05,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:19:05,601 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:19:05,601 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:19:05,601 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:19:05,601 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:19:05,601 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:19:05,602 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:19:05,602 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:19:05,602 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:19:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:19:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 13:19:05,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:05,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:05,643 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:05,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:05,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1582356444, now seen corresponding path program 1 times [2020-10-28 13:19:05,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:05,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246701303] [2020-10-28 13:19:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:06,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:06,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 13:19:06,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-28 13:19:06,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:06,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:19:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:19:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 13:19:06,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:19:06,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:06,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:06,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:06,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:06,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:19:06,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:06,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:19:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:06,710 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 13:19:06,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246701303] [2020-10-28 13:19:06,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:19:06,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:19:06,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506469585] [2020-10-28 13:19:06,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:19:06,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:06,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:19:06,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:19:06,743 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:19:06,897 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:19:11,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:11,895 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:19:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:19:11,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 13:19:11,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:11,919 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:19:11,919 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:19:11,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:19:11,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:19:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:19:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:19:12,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:19:12,040 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 50 [2020-10-28 13:19:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:12,040 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:19:12,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:19:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:19:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 13:19:12,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:12,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:12,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:19:12,049 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:12,049 INFO L82 PathProgramCache]: Analyzing trace with hash -881517252, now seen corresponding path program 1 times [2020-10-28 13:19:12,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:12,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705305775] [2020-10-28 13:19:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:12,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:13,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:13,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 13:19:13,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:19:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-10-28 13:19:13,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:13,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:19:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:19:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:19:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:19:13,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:13,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:13,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:13,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:13,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:19:13,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:13,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:13,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:19:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:19:13,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:14,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:14,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:19:14,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:14,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:19:14,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:14,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:14,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:19:14,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:19:14,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705305775] [2020-10-28 13:19:14,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:19:14,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 13:19:14,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005417910] [2020-10-28 13:19:14,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:19:14,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:14,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:19:14,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:19:14,166 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 8 states. [2020-10-28 13:19:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:22,043 INFO L93 Difference]: Finished difference Result 2771 states and 4140 transitions. [2020-10-28 13:19:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:19:22,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-28 13:19:22,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:22,064 INFO L225 Difference]: With dead ends: 2771 [2020-10-28 13:19:22,064 INFO L226 Difference]: Without dead ends: 2084 [2020-10-28 13:19:22,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:19:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-10-28 13:19:22,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2070. [2020-10-28 13:19:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-28 13:19:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2819 transitions. [2020-10-28 13:19:22,184 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2819 transitions. Word has length 126 [2020-10-28 13:19:22,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:22,184 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 2819 transitions. [2020-10-28 13:19:22,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:19:22,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2819 transitions. [2020-10-28 13:19:22,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 13:19:22,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:22,189 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:22,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:19:22,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:22,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:22,191 INFO L82 PathProgramCache]: Analyzing trace with hash -288920094, now seen corresponding path program 1 times [2020-10-28 13:19:22,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:22,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552449993] [2020-10-28 13:19:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:22,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:22,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 13:19:22,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-28 13:19:22,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:22,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:19:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 13:19:22,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:22,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:22,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:22,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:22,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:19:22,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:22,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:22,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:22,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:22,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:22,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:19:22,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:19:22,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:22,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:19:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:19:22,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552449993] [2020-10-28 13:19:22,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:22,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:19:22,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073446334] [2020-10-28 13:19:22,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:19:22,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:22,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:19:22,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:19:22,860 INFO L87 Difference]: Start difference. First operand 2070 states and 2819 transitions. Second operand 5 states. [2020-10-28 13:19:27,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:27,607 INFO L93 Difference]: Finished difference Result 5174 states and 7351 transitions. [2020-10-28 13:19:27,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:19:27,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-28 13:19:27,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:27,634 INFO L225 Difference]: With dead ends: 5174 [2020-10-28 13:19:27,635 INFO L226 Difference]: Without dead ends: 3110 [2020-10-28 13:19:27,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:19:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2020-10-28 13:19:27,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3104. [2020-10-28 13:19:27,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3104 states. [2020-10-28 13:19:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 4047 transitions. [2020-10-28 13:19:27,764 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 4047 transitions. Word has length 141 [2020-10-28 13:19:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:27,765 INFO L481 AbstractCegarLoop]: Abstraction has 3104 states and 4047 transitions. [2020-10-28 13:19:27,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:19:27,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 4047 transitions. [2020-10-28 13:19:27,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-28 13:19:27,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:27,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:19:27,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:19:27,787 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:27,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:27,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1250159014, now seen corresponding path program 1 times [2020-10-28 13:19:27,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:27,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229073234] [2020-10-28 13:19:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:27,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:29,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:32,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-28 13:19:32,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:19:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4654 [2020-10-28 13:19:32,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:32,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:19:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:19:32,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:32,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:32,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:32,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:32,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:32,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:19:32,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:32,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:32,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:32,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:32,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:19:32,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:32,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:19:32,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:32,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:19:32,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:19:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:33,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:33,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:19:33,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-28 13:19:33,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:33,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:19:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:19:33,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229073234] [2020-10-28 13:19:33,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:33,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:33,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972661759] [2020-10-28 13:19:33,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:33,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:33,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:33,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:33,372 INFO L87 Difference]: Start difference. First operand 3104 states and 4047 transitions. Second operand 7 states. [2020-10-28 13:19:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:39,410 INFO L93 Difference]: Finished difference Result 6255 states and 8190 transitions. [2020-10-28 13:19:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:19:39,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-28 13:19:39,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:39,433 INFO L225 Difference]: With dead ends: 6255 [2020-10-28 13:19:39,434 INFO L226 Difference]: Without dead ends: 3157 [2020-10-28 13:19:39,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:19:39,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2020-10-28 13:19:39,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3125. [2020-10-28 13:19:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2020-10-28 13:19:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 3755 transitions. [2020-10-28 13:19:39,526 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 3755 transitions. Word has length 279 [2020-10-28 13:19:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:39,527 INFO L481 AbstractCegarLoop]: Abstraction has 3125 states and 3755 transitions. [2020-10-28 13:19:39,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:39,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 3755 transitions. [2020-10-28 13:19:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-28 13:19:39,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:39,536 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:39,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:19:39,536 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:39,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:39,537 INFO L82 PathProgramCache]: Analyzing trace with hash -526282748, now seen corresponding path program 1 times [2020-10-28 13:19:39,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:39,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133092494] [2020-10-28 13:19:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:39,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:41,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:44,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:44,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-28 13:19:44,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:19:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 13:19:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:44,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:19:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:19:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:19:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:44,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:44,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:44,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:44,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:44,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:19:44,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:44,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:19:44,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:19:44,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:44,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:45,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:45,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:19:45,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:45,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-28 13:19:45,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:45,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:45,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:19:45,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:45,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-28 13:19:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:45,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:45,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:45,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:19:45,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:19:45,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:45,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:19:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:45,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 84 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:19:45,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133092494] [2020-10-28 13:19:45,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:45,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:45,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521327370] [2020-10-28 13:19:45,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:45,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:45,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:45,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:45,816 INFO L87 Difference]: Start difference. First operand 3125 states and 3755 transitions. Second operand 7 states. [2020-10-28 13:19:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:50,621 INFO L93 Difference]: Finished difference Result 6994 states and 8375 transitions. [2020-10-28 13:19:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:19:50,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-28 13:19:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:50,642 INFO L225 Difference]: With dead ends: 6994 [2020-10-28 13:19:50,642 INFO L226 Difference]: Without dead ends: 3875 [2020-10-28 13:19:50,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:19:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2020-10-28 13:19:50,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3853. [2020-10-28 13:19:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3853 states. [2020-10-28 13:19:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 4557 transitions. [2020-10-28 13:19:50,751 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 4557 transitions. Word has length 368 [2020-10-28 13:19:50,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:50,752 INFO L481 AbstractCegarLoop]: Abstraction has 3853 states and 4557 transitions. [2020-10-28 13:19:50,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 4557 transitions. [2020-10-28 13:19:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-28 13:19:50,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:50,762 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:50,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:19:50,763 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:50,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:50,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1883091590, now seen corresponding path program 1 times [2020-10-28 13:19:50,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:50,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738064490] [2020-10-28 13:19:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:50,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:54,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:54,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-28 13:19:54,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:19:54,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3863 [2020-10-28 13:19:54,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:54,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:19:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:19:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:54,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:54,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:54,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:54,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:54,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:54,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:19:54,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:54,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:54,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:55,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:55,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:19:55,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:55,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:19:55,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:55,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:19:55,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:55,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:19:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:55,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:55,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-28 13:19:55,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-28 13:19:55,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:55,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-28 13:19:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:19:55,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738064490] [2020-10-28 13:19:55,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:55,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:19:55,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788952215] [2020-10-28 13:19:55,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:19:55,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:55,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:19:55,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:19:55,990 INFO L87 Difference]: Start difference. First operand 3853 states and 4557 transitions. Second operand 8 states. [2020-10-28 13:20:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:02,077 INFO L93 Difference]: Finished difference Result 9175 states and 11312 transitions. [2020-10-28 13:20:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:20:02,079 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 407 [2020-10-28 13:20:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:02,106 INFO L225 Difference]: With dead ends: 9175 [2020-10-28 13:20:02,107 INFO L226 Difference]: Without dead ends: 4884 [2020-10-28 13:20:02,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:20:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2020-10-28 13:20:02,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 4828. [2020-10-28 13:20:02,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4828 states. [2020-10-28 13:20:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4828 states to 4828 states and 5190 transitions. [2020-10-28 13:20:02,266 INFO L78 Accepts]: Start accepts. Automaton has 4828 states and 5190 transitions. Word has length 407 [2020-10-28 13:20:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:02,267 INFO L481 AbstractCegarLoop]: Abstraction has 4828 states and 5190 transitions. [2020-10-28 13:20:02,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:20:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4828 states and 5190 transitions. [2020-10-28 13:20:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-28 13:20:02,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:02,277 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:02,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:20:02,278 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash -216294604, now seen corresponding path program 1 times [2020-10-28 13:20:02,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:02,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925908432] [2020-10-28 13:20:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:03,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:03,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-28 13:20:03,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:20:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-28 13:20:03,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:03,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:20:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:20:03,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:03,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:03,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:03,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:20:03,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:03,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:04,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:04,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:04,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:04,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 13:20:04,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:04,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:20:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:04,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:04,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:04,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:04,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:20:04,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:04,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 13:20:04,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:04,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:20:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:20:04,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925908432] [2020-10-28 13:20:04,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:04,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:04,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167088329] [2020-10-28 13:20:04,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:04,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:04,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:04,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:04,988 INFO L87 Difference]: Start difference. First operand 4828 states and 5190 transitions. Second operand 7 states. [2020-10-28 13:20:09,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:09,215 INFO L93 Difference]: Finished difference Result 10701 states and 11681 transitions. [2020-10-28 13:20:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:20:09,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 452 [2020-10-28 13:20:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:09,247 INFO L225 Difference]: With dead ends: 10701 [2020-10-28 13:20:09,247 INFO L226 Difference]: Without dead ends: 6216 [2020-10-28 13:20:09,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:20:09,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6216 states. [2020-10-28 13:20:09,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6216 to 5865. [2020-10-28 13:20:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5865 states. [2020-10-28 13:20:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 6283 transitions. [2020-10-28 13:20:09,413 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 6283 transitions. Word has length 452 [2020-10-28 13:20:09,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:09,414 INFO L481 AbstractCegarLoop]: Abstraction has 5865 states and 6283 transitions. [2020-10-28 13:20:09,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:09,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 6283 transitions. [2020-10-28 13:20:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-28 13:20:09,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:09,433 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:09,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:20:09,433 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:09,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:09,434 INFO L82 PathProgramCache]: Analyzing trace with hash 251006674, now seen corresponding path program 1 times [2020-10-28 13:20:09,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:09,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500579998] [2020-10-28 13:20:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:09,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:10,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:14,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:14,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 631 [2020-10-28 13:20:14,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 13:20:14,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:14,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:20:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:20:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:14,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:14,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:14,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:14,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:14,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:14,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:14,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:14,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:14,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:14,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:14,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:14,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:15,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:15,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:20:15,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 13:20:15,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:15,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:20:15,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:15,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:20:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:15,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:15,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:20:15,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-28 13:20:15,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:15,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:20:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:15,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:20:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:15,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:15,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:15,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:20:15,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:20:15,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:15,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:20:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:15,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 374 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-28 13:20:16,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500579998] [2020-10-28 13:20:16,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:16,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:16,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926934221] [2020-10-28 13:20:16,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:16,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:16,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:16,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:16,175 INFO L87 Difference]: Start difference. First operand 5865 states and 6283 transitions. Second operand 7 states. [2020-10-28 13:20:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:20,150 INFO L93 Difference]: Finished difference Result 11413 states and 12262 transitions. [2020-10-28 13:20:20,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:20:20,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 615 [2020-10-28 13:20:20,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:20,191 INFO L225 Difference]: With dead ends: 11413 [2020-10-28 13:20:20,191 INFO L226 Difference]: Without dead ends: 5893 [2020-10-28 13:20:20,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 13:20:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2020-10-28 13:20:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5869. [2020-10-28 13:20:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5869 states. [2020-10-28 13:20:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5869 states to 5869 states and 6281 transitions. [2020-10-28 13:20:20,340 INFO L78 Accepts]: Start accepts. Automaton has 5869 states and 6281 transitions. Word has length 615 [2020-10-28 13:20:20,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:20,341 INFO L481 AbstractCegarLoop]: Abstraction has 5869 states and 6281 transitions. [2020-10-28 13:20:20,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5869 states and 6281 transitions. [2020-10-28 13:20:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2020-10-28 13:20:20,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:20,349 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:20,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:20:20,350 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:20,351 INFO L82 PathProgramCache]: Analyzing trace with hash 597981092, now seen corresponding path program 1 times [2020-10-28 13:20:20,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:20,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822006124] [2020-10-28 13:20:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:20,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:20,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:23,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:23,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 632 [2020-10-28 13:20:23,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:20:23,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2715 [2020-10-28 13:20:23,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:23,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-28 13:20:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-28 13:20:23,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:23,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:23,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:23,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:23,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:23,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:23,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:20:23,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:23,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:23,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:20:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:23,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:23,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:23,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:20:23,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:23,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:20:23,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:23,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:23,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:23,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:23,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:23,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:20:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:23,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:23,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:20:23,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:23,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:20:23,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:23,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:20:23,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:20:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:23,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:23,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:23,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:20:23,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:23,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 13:20:23,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:23,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:20:23,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 444 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-28 13:20:24,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822006124] [2020-10-28 13:20:24,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:24,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:24,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614129257] [2020-10-28 13:20:24,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:24,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:24,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:24,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:24,314 INFO L87 Difference]: Start difference. First operand 5869 states and 6281 transitions. Second operand 7 states. [2020-10-28 13:20:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:28,229 INFO L93 Difference]: Finished difference Result 16517 states and 17911 transitions. [2020-10-28 13:20:28,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:20:28,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 616 [2020-10-28 13:20:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:28,266 INFO L225 Difference]: With dead ends: 16517 [2020-10-28 13:20:28,266 INFO L226 Difference]: Without dead ends: 10993 [2020-10-28 13:20:28,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:20:28,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10993 states. [2020-10-28 13:20:28,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10993 to 9639. [2020-10-28 13:20:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9639 states. [2020-10-28 13:20:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9639 states to 9639 states and 10479 transitions. [2020-10-28 13:20:28,491 INFO L78 Accepts]: Start accepts. Automaton has 9639 states and 10479 transitions. Word has length 616 [2020-10-28 13:20:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:28,496 INFO L481 AbstractCegarLoop]: Abstraction has 9639 states and 10479 transitions. [2020-10-28 13:20:28,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 9639 states and 10479 transitions. [2020-10-28 13:20:28,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-10-28 13:20:28,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:28,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:28,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:20:28,505 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:28,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:28,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1327209451, now seen corresponding path program 1 times [2020-10-28 13:20:28,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:28,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26222528] [2020-10-28 13:20:28,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:28,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:28,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:33,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:33,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 635 [2020-10-28 13:20:33,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 13:20:33,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:33,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:20:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:20:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 332 [2020-10-28 13:20:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:33,975 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:20:33,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:33,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:33,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:33,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:20:33,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:33,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:34,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:34,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:34,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:34,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:34,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:34,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 13:20:34,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:34,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:34,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:34,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:34,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:20:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:34,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:34,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:34,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 13:20:34,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:34,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-28 13:20:34,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:34,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:20:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-10-28 13:20:34,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:20:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:35,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:35,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 13:20:35,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:35,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:20:35,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:35,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:20:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 13:20:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:20:36,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26222528] [2020-10-28 13:20:36,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:36,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 13:20:36,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883874024] [2020-10-28 13:20:36,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 13:20:36,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:36,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 13:20:36,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-28 13:20:36,153 INFO L87 Difference]: Start difference. First operand 9639 states and 10479 transitions. Second operand 9 states. [2020-10-28 13:20:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:40,274 INFO L93 Difference]: Finished difference Result 20979 states and 22903 transitions. [2020-10-28 13:20:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:20:40,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 619 [2020-10-28 13:20:40,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:40,304 INFO L225 Difference]: With dead ends: 20979 [2020-10-28 13:20:40,305 INFO L226 Difference]: Without dead ends: 11685 [2020-10-28 13:20:40,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:20:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11685 states. [2020-10-28 13:20:40,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11685 to 11677. [2020-10-28 13:20:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11677 states. [2020-10-28 13:20:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11677 states to 11677 states and 12636 transitions. [2020-10-28 13:20:40,547 INFO L78 Accepts]: Start accepts. Automaton has 11677 states and 12636 transitions. Word has length 619 [2020-10-28 13:20:40,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:40,549 INFO L481 AbstractCegarLoop]: Abstraction has 11677 states and 12636 transitions. [2020-10-28 13:20:40,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 13:20:40,549 INFO L276 IsEmpty]: Start isEmpty. Operand 11677 states and 12636 transitions. [2020-10-28 13:20:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2020-10-28 13:20:40,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:40,561 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:40,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:20:40,561 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:40,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1359468718, now seen corresponding path program 1 times [2020-10-28 13:20:40,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:40,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520397059] [2020-10-28 13:20:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:41,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:41,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-28 13:20:41,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-10-28 13:20:41,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:41,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-28 13:20:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 13:20:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:41,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:41,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:41,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:41,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:41,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:20:41,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:41,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:41,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:41,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:42,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:42,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:20:42,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:42,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:20:42,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:42,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:42,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:42,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:20:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:42,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:42,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:20:42,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:20:42,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:42,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:42,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:42,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:42,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:42,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:42,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:20:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:42,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:42,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:20:42,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:42,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 13:20:42,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:42,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-28 13:20:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-10-28 13:20:42,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520397059] [2020-10-28 13:20:42,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:42,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:20:42,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573061688] [2020-10-28 13:20:42,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:20:42,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:42,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:20:42,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:20:42,798 INFO L87 Difference]: Start difference. First operand 11677 states and 12636 transitions. Second operand 5 states. [2020-10-28 13:20:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:46,225 INFO L93 Difference]: Finished difference Result 25372 states and 27486 transitions. [2020-10-28 13:20:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:20:46,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 673 [2020-10-28 13:20:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:46,267 INFO L225 Difference]: With dead ends: 25372 [2020-10-28 13:20:46,267 INFO L226 Difference]: Without dead ends: 14040 [2020-10-28 13:20:46,285 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 13:20:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14040 states. [2020-10-28 13:20:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14040 to 14038. [2020-10-28 13:20:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14038 states. [2020-10-28 13:20:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14038 states to 14038 states and 15095 transitions. [2020-10-28 13:20:46,550 INFO L78 Accepts]: Start accepts. Automaton has 14038 states and 15095 transitions. Word has length 673 [2020-10-28 13:20:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:46,551 INFO L481 AbstractCegarLoop]: Abstraction has 14038 states and 15095 transitions. [2020-10-28 13:20:46,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:20:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 14038 states and 15095 transitions. [2020-10-28 13:20:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1375 [2020-10-28 13:20:46,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:46,595 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:46,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:20:46,596 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:46,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:46,596 INFO L82 PathProgramCache]: Analyzing trace with hash 964866440, now seen corresponding path program 1 times [2020-10-28 13:20:46,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:46,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53154977] [2020-10-28 13:20:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:52,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:52,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1396 [2020-10-28 13:20:52,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:52,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-28 13:20:52,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:52,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:20:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1077 [2020-10-28 13:20:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-28 13:20:52,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:52,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:52,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:52,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:52,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:52,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:52,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:52,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:52,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:52,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:52,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:52,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:20:52,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:52,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:52,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:52,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:52,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:52,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:20:52,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:20:52,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:52,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:52,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:52,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:20:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:52,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:52,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:52,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:52,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:20:52,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:52,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:52,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:20:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:52,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:52,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:20:52,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:20:52,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:52,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:52,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:20:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:52,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:52,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:20:52,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:52,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:20:52,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:52,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:52,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-28 13:20:52,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:20:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:53,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:53,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:53,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 13:20:53,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:20:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-28 13:20:53,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:53,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-28 13:20:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3089 backedges. 282 proven. 6 refuted. 0 times theorem prover too weak. 2801 trivial. 0 not checked. [2020-10-28 13:20:54,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53154977] [2020-10-28 13:20:54,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:54,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:20:54,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133152944] [2020-10-28 13:20:54,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:20:54,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:54,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:20:54,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:20:54,498 INFO L87 Difference]: Start difference. First operand 14038 states and 15095 transitions. Second operand 6 states. [2020-10-28 13:20:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:57,957 INFO L93 Difference]: Finished difference Result 27731 states and 29842 transitions. [2020-10-28 13:20:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:20:57,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1374 [2020-10-28 13:20:57,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:57,997 INFO L225 Difference]: With dead ends: 27731 [2020-10-28 13:20:57,997 INFO L226 Difference]: Without dead ends: 14038 [2020-10-28 13:20:58,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:58,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14038 states. [2020-10-28 13:20:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14038 to 13701. [2020-10-28 13:20:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13701 states. [2020-10-28 13:20:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13701 states to 13701 states and 14504 transitions. [2020-10-28 13:20:58,272 INFO L78 Accepts]: Start accepts. Automaton has 13701 states and 14504 transitions. Word has length 1374 [2020-10-28 13:20:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:58,275 INFO L481 AbstractCegarLoop]: Abstraction has 13701 states and 14504 transitions. [2020-10-28 13:20:58,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:20:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 13701 states and 14504 transitions. [2020-10-28 13:20:58,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1509 [2020-10-28 13:20:58,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:58,322 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:58,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:20:58,323 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:58,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:58,323 INFO L82 PathProgramCache]: Analyzing trace with hash -340749020, now seen corresponding path program 1 times [2020-10-28 13:20:58,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:58,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148154815] [2020-10-28 13:20:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:59,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:59,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1534 [2020-10-28 13:21:04,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:21:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5335 [2020-10-28 13:21:04,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:21:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1077 [2020-10-28 13:21:04,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 309 [2020-10-28 13:21:04,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:21:04,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:04,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:21:04,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:04,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:04,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:04,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:04,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:04,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:21:04,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:04,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:21:04,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:21:04,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:21:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:21:04,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:21:04,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:21:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:21:04,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:21:04,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:21:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:05,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:05,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:21:05,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 13:21:05,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:05,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-28 13:21:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:05,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:21:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:05,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:05,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:05,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:21:05,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-28 13:21:05,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:05,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:21:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-28 13:21:05,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:05,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:21:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:05,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:05,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:21:05,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:05,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:21:05,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:05,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:05,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:21:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 13:21:05,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:05,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1374 [2020-10-28 13:21:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:05,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:05,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:21:05,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:21:05,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:05,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:21:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3691 backedges. 1378 proven. 91 refuted. 0 times theorem prover too weak. 2222 trivial. 0 not checked. [2020-10-28 13:21:07,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148154815] [2020-10-28 13:21:07,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:07,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:07,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038195319] [2020-10-28 13:21:07,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:07,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:07,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:07,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:07,348 INFO L87 Difference]: Start difference. First operand 13701 states and 14504 transitions. Second operand 7 states. [2020-10-28 13:21:11,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:11,642 INFO L93 Difference]: Finished difference Result 29455 states and 31336 transitions. [2020-10-28 13:21:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:21:11,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1508 [2020-10-28 13:21:11,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:11,689 INFO L225 Difference]: With dead ends: 29455 [2020-10-28 13:21:11,689 INFO L226 Difference]: Without dead ends: 15080 [2020-10-28 13:21:11,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:21:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15080 states. [2020-10-28 13:21:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15080 to 13700. [2020-10-28 13:21:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13700 states. [2020-10-28 13:21:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13700 states to 13700 states and 14337 transitions. [2020-10-28 13:21:11,957 INFO L78 Accepts]: Start accepts. Automaton has 13700 states and 14337 transitions. Word has length 1508 [2020-10-28 13:21:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:11,958 INFO L481 AbstractCegarLoop]: Abstraction has 13700 states and 14337 transitions. [2020-10-28 13:21:11,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 13700 states and 14337 transitions. [2020-10-28 13:21:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1639 [2020-10-28 13:21:12,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:12,006 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:21:12,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:21:12,006 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:12,007 INFO L82 PathProgramCache]: Analyzing trace with hash 137119280, now seen corresponding path program 1 times [2020-10-28 13:21:12,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:12,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364010145] [2020-10-28 13:21:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:12,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:13,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:17,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:17,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1666 [2020-10-28 13:21:17,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:21:17,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 13:21:17,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:17,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-28 13:21:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:21:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:17,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:17,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:17,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:17,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:21:17,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:17,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:17,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:17,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:17,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:17,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:17,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:21:17,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:17,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:17,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:17,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:17,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:17,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:21:17,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:17,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:21:17,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:17,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:17,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:17,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:17,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:17,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:21:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:17,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:17,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:17,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:21:17,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:17,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:21:17,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:17,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:17,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:17,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:17,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:17,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:21:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:18,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:18,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:21:18,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:18,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:21:18,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:18,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:18,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:18,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:18,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:21:18,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:21:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:18,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:18,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:21:18,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:18,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-28 13:21:18,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:18,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:21:18,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:19,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:21:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:19,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:19,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:21:19,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:21:19,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:19,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:21:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:19,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-28 13:21:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:19,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:19,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:21:19,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:19,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:21:19,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:19,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:21:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:19,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1250 [2020-10-28 13:21:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:19,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:19,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:21:19,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:19,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:21:19,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:19,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:21:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:19,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:19,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1504 [2020-10-28 13:21:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:19,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:19,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:21:19,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:19,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:21:19,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:19,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:21:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 1231 proven. 519 refuted. 0 times theorem prover too weak. 3338 trivial. 0 not checked. [2020-10-28 13:21:22,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364010145] [2020-10-28 13:21:22,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:22,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:21:22,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469902617] [2020-10-28 13:21:22,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:21:22,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:22,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:21:22,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:21:22,256 INFO L87 Difference]: Start difference. First operand 13700 states and 14337 transitions. Second operand 8 states. [2020-10-28 13:21:29,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:29,277 INFO L93 Difference]: Finished difference Result 28778 states and 30172 transitions. [2020-10-28 13:21:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:21:29,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1638 [2020-10-28 13:21:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:29,312 INFO L225 Difference]: With dead ends: 28778 [2020-10-28 13:21:29,312 INFO L226 Difference]: Without dead ends: 15423 [2020-10-28 13:21:29,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 13:21:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15423 states. [2020-10-28 13:21:29,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15423 to 15399. [2020-10-28 13:21:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15399 states. [2020-10-28 13:21:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15399 states to 15399 states and 16088 transitions. [2020-10-28 13:21:29,590 INFO L78 Accepts]: Start accepts. Automaton has 15399 states and 16088 transitions. Word has length 1638 [2020-10-28 13:21:29,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:29,592 INFO L481 AbstractCegarLoop]: Abstraction has 15399 states and 16088 transitions. [2020-10-28 13:21:29,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:21:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand 15399 states and 16088 transitions. [2020-10-28 13:21:29,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1794 [2020-10-28 13:21:29,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:29,661 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:21:29,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:21:29,662 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:29,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:29,662 INFO L82 PathProgramCache]: Analyzing trace with hash -572364370, now seen corresponding path program 1 times [2020-10-28 13:21:29,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:29,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114684748] [2020-10-28 13:21:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:30,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:30,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1825 [2020-10-28 13:21:35,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:21:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-28 13:21:35,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 793 [2020-10-28 13:21:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:21:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:35,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:21:35,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:35,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:35,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:21:35,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:35,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:21:35,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:21:35,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:21:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:21:35,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:21:35,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:21:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:21:35,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:21:35,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-28 13:21:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:21:35,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:21:35,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:21:35,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-28 13:21:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:36,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:21:36,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 13:21:36,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:36,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:21:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:36,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1033 [2020-10-28 13:21:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:36,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:36,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:21:36,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:36,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:21:36,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:36,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:36,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:36,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-28 13:21:36,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:36,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:21:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:36,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:21:36,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:36,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:21:36,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:36,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:36,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:36,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:36,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1334 [2020-10-28 13:21:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:36,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:21:36,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:21:36,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:36,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:21:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:36,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1405 [2020-10-28 13:21:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:36,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:21:36,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-28 13:21:36,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:36,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:21:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:36,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1659 [2020-10-28 13:21:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:36,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:36,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:21:36,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:21:36,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:36,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:21:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5951 backedges. 1280 proven. 653 refuted. 0 times theorem prover too weak. 4018 trivial. 0 not checked. [2020-10-28 13:21:39,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114684748] [2020-10-28 13:21:39,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:39,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:21:39,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805011094] [2020-10-28 13:21:39,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:21:39,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:39,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:21:39,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:21:39,065 INFO L87 Difference]: Start difference. First operand 15399 states and 16088 transitions. Second operand 8 states. [2020-10-28 13:21:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:44,208 INFO L93 Difference]: Finished difference Result 31817 states and 33219 transitions. [2020-10-28 13:21:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:21:44,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1793 [2020-10-28 13:21:44,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:44,244 INFO L225 Difference]: With dead ends: 31817 [2020-10-28 13:21:44,244 INFO L226 Difference]: Without dead ends: 16763 [2020-10-28 13:21:44,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:21:44,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16763 states. [2020-10-28 13:21:44,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16763 to 16751. [2020-10-28 13:21:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16751 states. [2020-10-28 13:21:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16751 states to 16751 states and 17453 transitions. [2020-10-28 13:21:44,557 INFO L78 Accepts]: Start accepts. Automaton has 16751 states and 17453 transitions. Word has length 1793 [2020-10-28 13:21:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:44,558 INFO L481 AbstractCegarLoop]: Abstraction has 16751 states and 17453 transitions. [2020-10-28 13:21:44,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:21:44,558 INFO L276 IsEmpty]: Start isEmpty. Operand 16751 states and 17453 transitions. [2020-10-28 13:21:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1840 [2020-10-28 13:21:44,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:44,614 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:21:44,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:21:44,614 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:44,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:44,615 INFO L82 PathProgramCache]: Analyzing trace with hash 863770062, now seen corresponding path program 1 times [2020-10-28 13:21:44,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:44,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380260131] [2020-10-28 13:21:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:45,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:45,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1867 [2020-10-28 13:21:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:21:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-28 13:21:50,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1003 [2020-10-28 13:21:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:21:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:50,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:50,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:50,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:21:50,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:50,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:50,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:50,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:50,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:21:50,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:50,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:21:50,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:50,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:21:50,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:50,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:21:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:50,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:51,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:51,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:21:51,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:21:51,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:51,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:51,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2020-10-28 13:21:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:51,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:51,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:51,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-28 13:21:51,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 13:21:51,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:51,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-28 13:21:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-28 13:21:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:51,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:51,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:21:51,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-28 13:21:51,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:51,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:21:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1268 [2020-10-28 13:21:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:52,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:52,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:21:52,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:52,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:21:52,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:52,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:21:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:52,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1380 [2020-10-28 13:21:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:52,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:52,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:21:52,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:21:52,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:52,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:21:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:52,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1451 [2020-10-28 13:21:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:52,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:52,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:52,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:21:52,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:21:52,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:52,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:21:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1705 [2020-10-28 13:21:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:52,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:52,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:21:52,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:52,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:21:52,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:52,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:21:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:52,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5861 backedges. 1429 proven. 519 refuted. 0 times theorem prover too weak. 3913 trivial. 0 not checked. [2020-10-28 13:21:54,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380260131] [2020-10-28 13:21:54,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:54,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:54,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198924862] [2020-10-28 13:21:54,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:54,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:54,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:54,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:54,803 INFO L87 Difference]: Start difference. First operand 16751 states and 17453 transitions. Second operand 7 states. [2020-10-28 13:22:00,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:00,915 INFO L93 Difference]: Finished difference Result 33506 states and 34911 transitions. [2020-10-28 13:22:00,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:22:00,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1839 [2020-10-28 13:22:00,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:00,956 INFO L225 Difference]: With dead ends: 33506 [2020-10-28 13:22:00,957 INFO L226 Difference]: Without dead ends: 17100 [2020-10-28 13:22:00,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:22:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17100 states. [2020-10-28 13:22:01,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17100 to 16753. [2020-10-28 13:22:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16753 states. [2020-10-28 13:22:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16753 states to 16753 states and 17450 transitions. [2020-10-28 13:22:01,253 INFO L78 Accepts]: Start accepts. Automaton has 16753 states and 17450 transitions. Word has length 1839 [2020-10-28 13:22:01,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:01,254 INFO L481 AbstractCegarLoop]: Abstraction has 16753 states and 17450 transitions. [2020-10-28 13:22:01,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:01,254 INFO L276 IsEmpty]: Start isEmpty. Operand 16753 states and 17450 transitions. [2020-10-28 13:22:01,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1871 [2020-10-28 13:22:01,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:01,295 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:01,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:22:01,295 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:01,296 INFO L82 PathProgramCache]: Analyzing trace with hash -266596388, now seen corresponding path program 1 times [2020-10-28 13:22:01,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:01,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469373339] [2020-10-28 13:22:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:01,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:02,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:05,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:06,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:06,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1904 [2020-10-28 13:22:06,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:22:06,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-28 13:22:06,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:06,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1121 [2020-10-28 13:22:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-28 13:22:06,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:06,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:06,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:06,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:22:06,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:06,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:06,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:06,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:06,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:06,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:22:06,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:06,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:22:06,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:06,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:06,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:22:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:06,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:07,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:22:07,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:07,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:22:07,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:07,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:07,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:07,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:07,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:07,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:07,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:22:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:07,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:07,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:07,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:22:07,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:07,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:07,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:22:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:07,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:07,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:22:07,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:22:07,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:07,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:07,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-28 13:22:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:07,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:22:07,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:07,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:22:07,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:07,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:07,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-28 13:22:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:07,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:22:07,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-28 13:22:07,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:07,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:07,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:07,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:07,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 321 [2020-10-28 13:22:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:07,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:22:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:07,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:07,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 13:22:07,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:07,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:22:07,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:07,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 13:22:07,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1110 [2020-10-28 13:22:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:07,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:08,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:08,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:22:08,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-28 13:22:08,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:08,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-28 13:22:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:22:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:08,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:08,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:08,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:22:08,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:08,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:22:08,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:08,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:22:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:22:08,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:08,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1411 [2020-10-28 13:22:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:08,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:08,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:08,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:22:08,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:22:08,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:08,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:22:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:08,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1482 [2020-10-28 13:22:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:08,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:08,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:08,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:22:08,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 13:22:08,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:08,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:22:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:08,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1736 [2020-10-28 13:22:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:08,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:08,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:22:08,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:08,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:22:08,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:08,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:22:08,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:08,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 1571 proven. 413 refuted. 0 times theorem prover too weak. 4022 trivial. 0 not checked. [2020-10-28 13:22:10,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469373339] [2020-10-28 13:22:10,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:10,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:10,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170330564] [2020-10-28 13:22:10,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:10,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:10,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:10,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:10,615 INFO L87 Difference]: Start difference. First operand 16753 states and 17450 transitions. Second operand 7 states. [2020-10-28 13:22:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:14,818 INFO L93 Difference]: Finished difference Result 36217 states and 37844 transitions. [2020-10-28 13:22:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:22:14,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1870 [2020-10-28 13:22:14,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:14,850 INFO L225 Difference]: With dead ends: 36217 [2020-10-28 13:22:14,850 INFO L226 Difference]: Without dead ends: 19809 [2020-10-28 13:22:14,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:22:14,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19809 states. [2020-10-28 13:22:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19809 to 18108. [2020-10-28 13:22:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18108 states. [2020-10-28 13:22:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18108 states to 18108 states and 18894 transitions. [2020-10-28 13:22:15,205 INFO L78 Accepts]: Start accepts. Automaton has 18108 states and 18894 transitions. Word has length 1870 [2020-10-28 13:22:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:15,206 INFO L481 AbstractCegarLoop]: Abstraction has 18108 states and 18894 transitions. [2020-10-28 13:22:15,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 18108 states and 18894 transitions. [2020-10-28 13:22:15,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1948 [2020-10-28 13:22:15,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:15,264 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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 13:22:15,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:22:15,265 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:15,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1918180326, now seen corresponding path program 1 times [2020-10-28 13:22:15,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:15,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394725968] [2020-10-28 13:22:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:15,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:17,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:20,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:20,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1977 [2020-10-28 13:22:20,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:22:20,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-28 13:22:20,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:20,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:20,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:20,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1084 [2020-10-28 13:22:20,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:22:20,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:20,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:20,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:20,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:22:20,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:20,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:20,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:20,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:22:20,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:22:20,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:20,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:21,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:22:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:21,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:21,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:21,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:22:21,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:22:21,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:21,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:21,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:22:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:21,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:21,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:21,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:21,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:22:21,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:21,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:21,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:22:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:21,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:21,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:22:21,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:22:21,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:21,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:21,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-28 13:22:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:21,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:21,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:21,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:22:21,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 13:22:21,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:21,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:21,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:21,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-28 13:22:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:21,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:21,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:22:21,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:21,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:22:21,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:21,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 13:22:21,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1072 [2020-10-28 13:22:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:22,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:22,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:22:22,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-28 13:22:22,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:22,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:22:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:22,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1345 [2020-10-28 13:22:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:22,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:22,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 13:22:22,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:22,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:22:22,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:22,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-28 13:22:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:22,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:22,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1610 [2020-10-28 13:22:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:23,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:23,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:22:23,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-28 13:22:23,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:23,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:22:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:22:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6345 backedges. 1497 proven. 534 refuted. 0 times theorem prover too weak. 4314 trivial. 0 not checked. [2020-10-28 13:22:25,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394725968] [2020-10-28 13:22:25,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:25,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:25,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412615937] [2020-10-28 13:22:25,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:25,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:25,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:25,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:25,433 INFO L87 Difference]: Start difference. First operand 18108 states and 18894 transitions. Second operand 7 states. [2020-10-28 13:22:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:31,150 INFO L93 Difference]: Finished difference Result 36557 states and 38156 transitions. [2020-10-28 13:22:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:22:31,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1947 [2020-10-28 13:22:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:31,178 INFO L225 Difference]: With dead ends: 36557 [2020-10-28 13:22:31,178 INFO L226 Difference]: Without dead ends: 18794 [2020-10-28 13:22:31,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 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 13:22:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18794 states. [2020-10-28 13:22:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18794 to 17769. [2020-10-28 13:22:31,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17769 states. [2020-10-28 13:22:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17769 states to 17769 states and 18516 transitions. [2020-10-28 13:22:31,473 INFO L78 Accepts]: Start accepts. Automaton has 17769 states and 18516 transitions. Word has length 1947 [2020-10-28 13:22:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:31,474 INFO L481 AbstractCegarLoop]: Abstraction has 17769 states and 18516 transitions. [2020-10-28 13:22:31,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:31,475 INFO L276 IsEmpty]: Start isEmpty. Operand 17769 states and 18516 transitions. [2020-10-28 13:22:31,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1982 [2020-10-28 13:22:31,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:31,525 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 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, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:31,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 13:22:31,526 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:31,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:31,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1701834010, now seen corresponding path program 1 times [2020-10-28 13:22:31,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:31,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309566092] [2020-10-28 13:22:31,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY