/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem15_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:40:49,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:40:49,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:40:49,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:40:49,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:40:49,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:40:49,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:40:49,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:40:49,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:40:49,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:40:49,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:40:49,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:40:49,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:40:49,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:40:49,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:40:49,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:40:49,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:40:49,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:40:49,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:40:49,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:40:49,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:40:49,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:40:49,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:40:49,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:40:49,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:40:49,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:40:49,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:40:49,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:40:49,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:40:49,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:40:49,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:40:49,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:40:49,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:40:49,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:40:49,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:40:49,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:40:49,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:40:49,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:40:49,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:40:49,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:40:49,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:40:49,283 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 [2020-10-29 07:40:49,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:40:49,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:40:49,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:40:49,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:40:49,317 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:40:49,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:40:49,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:40:49,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:40:49,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:40:49,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:40:49,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:40:49,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:40:49,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:40:49,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:40:49,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:40:49,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:40:49,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:40:49,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:40:49,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:40:49,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:40:49,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:40:49,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:40:49,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:40:49,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:40:49,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:40:49,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:40:49,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:40:49,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:40:49,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:40:49,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:40:49,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:40:49,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:40:49,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:40:49,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:40:49,759 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:40:49,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label06.c [2020-10-29 07:40:49,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ead79a61/30810839e4cc4a59a94b59651420487a/FLAGc1159c7a4 [2020-10-29 07:40:50,772 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:40:50,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label06.c [2020-10-29 07:40:50,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ead79a61/30810839e4cc4a59a94b59651420487a/FLAGc1159c7a4 [2020-10-29 07:40:50,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ead79a61/30810839e4cc4a59a94b59651420487a [2020-10-29 07:40:50,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:40:50,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:40:50,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:40:50,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:40:50,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:40:50,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:40:50" (1/1) ... [2020-10-29 07:40:50,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea86f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:50, skipping insertion in model container [2020-10-29 07:40:50,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:40:50" (1/1) ... [2020-10-29 07:40:50,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:40:51,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:40:51,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:40:51,871 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:40:52,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:40:52,170 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:40:52,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:52 WrapperNode [2020-10-29 07:40:52,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:40:52,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:40:52,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:40:52,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:40:52,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:52" (1/1) ... [2020-10-29 07:40:52,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:52" (1/1) ... [2020-10-29 07:40:52,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:52" (1/1) ... [2020-10-29 07:40:52,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:52" (1/1) ... [2020-10-29 07:40:52,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:52" (1/1) ... [2020-10-29 07:40:52,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:52" (1/1) ... [2020-10-29 07:40:52,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:52" (1/1) ... [2020-10-29 07:40:52,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:40:52,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:40:52,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:40:52,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:40:52,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:52" (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 [2020-10-29 07:40:52,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:40:52,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:40:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:40:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:40:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:40:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:40:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:40:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:40:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:40:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:40:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:40:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:40:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:40:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:40:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:40:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:40:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:40:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:40:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:40:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:40:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:40:55,891 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:40:55,892 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:40:55,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:40:55 BoogieIcfgContainer [2020-10-29 07:40:55,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:40:55,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:40:55,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:40:55,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:40:55,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:40:50" (1/3) ... [2020-10-29 07:40:55,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f8d130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:40:55, skipping insertion in model container [2020-10-29 07:40:55,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:52" (2/3) ... [2020-10-29 07:40:55,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f8d130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:40:55, skipping insertion in model container [2020-10-29 07:40:55,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:40:55" (3/3) ... [2020-10-29 07:40:55,904 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label06.c [2020-10-29 07:40:55,917 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:40:55,923 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:40:55,937 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:40:55,969 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:40:55,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:40:55,969 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:40:55,969 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:40:55,969 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:40:55,969 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:40:55,969 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:40:55,970 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:40:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:40:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 07:40:56,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:56,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:56,011 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:56,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:56,018 INFO L82 PathProgramCache]: Analyzing trace with hash 239263079, now seen corresponding path program 1 times [2020-10-29 07:40:56,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:56,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025295292] [2020-10-29 07:40:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:56,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:40:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-29 07:40:56,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:56,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:40:56,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:40:57,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:57,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:57,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:57,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:57,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:40:57,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:57,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:57,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025295292] [2020-10-29 07:40:57,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:40:57,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:40:57,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456157887] [2020-10-29 07:40:57,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:40:57,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:57,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:40:57,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:40:57,293 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:40:57,468 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 07:41:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:05,615 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-29 07:41:05,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:41:05,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-29 07:41:05,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:05,639 INFO L225 Difference]: With dead ends: 1208 [2020-10-29 07:41:05,639 INFO L226 Difference]: Without dead ends: 703 [2020-10-29 07:41:05,653 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 [2020-10-29 07:41:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-29 07:41:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-29 07:41:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-29 07:41:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-29 07:41:05,785 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 63 [2020-10-29 07:41:05,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:05,786 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-29 07:41:05,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:41:05,786 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-29 07:41:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 07:41:05,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:05,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:05,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:41:05,795 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:05,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:05,796 INFO L82 PathProgramCache]: Analyzing trace with hash 804207052, now seen corresponding path program 1 times [2020-10-29 07:41:05,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:05,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150429434] [2020-10-29 07:41:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:05,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:07,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:07,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:07,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 07:41:07,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:41:07,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-10-29 07:41:07,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:07,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:07,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:41:07,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:07,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 07:41:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:41:07,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:07,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:07,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:07,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:41:07,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:07,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:07,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:41:07,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:08,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:08,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:08,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:41:08,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 07:41:08,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:08,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:41:08,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:41:08,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150429434] [2020-10-29 07:41:08,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:08,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:41:08,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876836848] [2020-10-29 07:41:08,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:41:08,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:08,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:41:08,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:41:08,378 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 6 states. [2020-10-29 07:41:19,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:19,555 INFO L93 Difference]: Finished difference Result 2042 states and 3000 transitions. [2020-10-29 07:41:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:41:19,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-29 07:41:19,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:19,566 INFO L225 Difference]: With dead ends: 2042 [2020-10-29 07:41:19,566 INFO L226 Difference]: Without dead ends: 1351 [2020-10-29 07:41:19,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:41:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-10-29 07:41:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1341. [2020-10-29 07:41:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-10-29 07:41:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1736 transitions. [2020-10-29 07:41:19,677 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1736 transitions. Word has length 142 [2020-10-29 07:41:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:19,679 INFO L481 AbstractCegarLoop]: Abstraction has 1341 states and 1736 transitions. [2020-10-29 07:41:19,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:41:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1736 transitions. [2020-10-29 07:41:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-29 07:41:19,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:19,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:19,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:41:19,690 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:19,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1726832288, now seen corresponding path program 1 times [2020-10-29 07:41:19,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:19,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88553752] [2020-10-29 07:41:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:20,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:21,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:24,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:24,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 07:41:24,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:41:24,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4552 [2020-10-29 07:41:24,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:24,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:41:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:41:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:24,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:24,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:24,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:24,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:24,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:41:24,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:24,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:24,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:24,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:24,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:24,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:41:24,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 07:41:24,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:24,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:41:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:24,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:41:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:24,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:41:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 07:41:24,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:24,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:41:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:41:25,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88553752] [2020-10-29 07:41:25,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:25,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:41:25,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237391485] [2020-10-29 07:41:25,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:25,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:25,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:25,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:25,076 INFO L87 Difference]: Start difference. First operand 1341 states and 1736 transitions. Second operand 7 states. [2020-10-29 07:41:34,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:34,862 INFO L93 Difference]: Finished difference Result 3959 states and 5145 transitions. [2020-10-29 07:41:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:41:34,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-29 07:41:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:34,880 INFO L225 Difference]: With dead ends: 3959 [2020-10-29 07:41:34,881 INFO L226 Difference]: Without dead ends: 2624 [2020-10-29 07:41:34,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:41:34,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2020-10-29 07:41:34,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2575. [2020-10-29 07:41:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-29 07:41:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3116 transitions. [2020-10-29 07:41:34,982 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3116 transitions. Word has length 237 [2020-10-29 07:41:34,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:34,983 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 3116 transitions. [2020-10-29 07:41:34,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:34,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3116 transitions. [2020-10-29 07:41:34,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-29 07:41:34,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:34,991 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-10-29 07:41:34,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:41:34,992 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:34,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:34,993 INFO L82 PathProgramCache]: Analyzing trace with hash -43930290, now seen corresponding path program 1 times [2020-10-29 07:41:34,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:34,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123974738] [2020-10-29 07:41:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:40,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:40,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-29 07:41:40,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:41:40,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 07:41:40,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:40,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:41:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:40,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:41:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:41:40,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:40,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:40,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:40,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:40,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:41:40,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:40,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:40,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:40,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:40,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:41:40,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 07:41:40,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:40,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:41:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:41,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:41:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:41,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:41,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:41:41,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:41:41,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:41,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:41:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:41,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 110 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:41:41,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123974738] [2020-10-29 07:41:41,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:41,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:41,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522766075] [2020-10-29 07:41:41,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:41,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:41,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:41,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:41,536 INFO L87 Difference]: Start difference. First operand 2575 states and 3116 transitions. Second operand 7 states. [2020-10-29 07:41:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:49,976 INFO L93 Difference]: Finished difference Result 4880 states and 5965 transitions. [2020-10-29 07:41:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:41:49,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-29 07:41:49,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:49,995 INFO L225 Difference]: With dead ends: 4880 [2020-10-29 07:41:49,995 INFO L226 Difference]: Without dead ends: 2618 [2020-10-29 07:41:50,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:41:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2020-10-29 07:41:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2579. [2020-10-29 07:41:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2579 states. [2020-10-29 07:41:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 3116 transitions. [2020-10-29 07:41:50,096 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 3116 transitions. Word has length 343 [2020-10-29 07:41:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:50,097 INFO L481 AbstractCegarLoop]: Abstraction has 2579 states and 3116 transitions. [2020-10-29 07:41:50,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 3116 transitions. [2020-10-29 07:41:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-29 07:41:50,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:50,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:41:50,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:41:50,106 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:50,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:50,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1901528414, now seen corresponding path program 1 times [2020-10-29 07:41:50,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:50,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541411752] [2020-10-29 07:41:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:54,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:54,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-29 07:41:54,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:41:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4493 [2020-10-29 07:41:54,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:54,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:41:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 363 [2020-10-29 07:41:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:54,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:54,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:54,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:54,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:41:54,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:54,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:54,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:55,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:55,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:55,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:41:55,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:55,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 07:41:55,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:55,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:41:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:55,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:41:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:55,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:56,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:56,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:41:56,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:56,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-29 07:41:56,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:56,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:56,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:41:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 102 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:41:56,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541411752] [2020-10-29 07:41:56,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:56,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:56,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508953405] [2020-10-29 07:41:56,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:56,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:56,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:56,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:56,359 INFO L87 Difference]: Start difference. First operand 2579 states and 3116 transitions. Second operand 7 states. [2020-10-29 07:42:00,690 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:42:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:11,666 INFO L93 Difference]: Finished difference Result 5471 states and 7067 transitions. [2020-10-29 07:42:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:42:11,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-29 07:42:11,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:11,691 INFO L225 Difference]: With dead ends: 5471 [2020-10-29 07:42:11,692 INFO L226 Difference]: Without dead ends: 4143 [2020-10-29 07:42:11,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:42:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2020-10-29 07:42:11,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 3213. [2020-10-29 07:42:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2020-10-29 07:42:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 4073 transitions. [2020-10-29 07:42:11,820 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 4073 transitions. Word has length 358 [2020-10-29 07:42:11,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:11,821 INFO L481 AbstractCegarLoop]: Abstraction has 3213 states and 4073 transitions. [2020-10-29 07:42:11,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 4073 transitions. [2020-10-29 07:42:11,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-29 07:42:11,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:11,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:42:11,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:42:11,833 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:11,834 INFO L82 PathProgramCache]: Analyzing trace with hash -684969446, now seen corresponding path program 1 times [2020-10-29 07:42:11,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:11,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411936216] [2020-10-29 07:42:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:14,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:14,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-29 07:42:14,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2266 [2020-10-29 07:42:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:14,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:42:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:42:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:14,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:14,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:14,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:14,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:14,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:42:14,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:14,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:14,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:14,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:14,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:14,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:42:14,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:14,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-29 07:42:14,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:14,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:42:14,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:15,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:42:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:15,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:15,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:15,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:42:15,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:15,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 07:42:15,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:15,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:42:15,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:42:15,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411936216] [2020-10-29 07:42:15,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:15,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:15,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372846401] [2020-10-29 07:42:15,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:15,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:15,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:15,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:15,463 INFO L87 Difference]: Start difference. First operand 3213 states and 4073 transitions. Second operand 7 states. [2020-10-29 07:42:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:29,438 INFO L93 Difference]: Finished difference Result 8076 states and 10696 transitions. [2020-10-29 07:42:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:42:29,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 447 [2020-10-29 07:42:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:29,467 INFO L225 Difference]: With dead ends: 8076 [2020-10-29 07:42:29,467 INFO L226 Difference]: Without dead ends: 5176 [2020-10-29 07:42:29,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:42:29,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2020-10-29 07:42:29,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 5123. [2020-10-29 07:42:29,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5123 states. [2020-10-29 07:42:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 6352 transitions. [2020-10-29 07:42:29,643 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 6352 transitions. Word has length 447 [2020-10-29 07:42:29,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:29,644 INFO L481 AbstractCegarLoop]: Abstraction has 5123 states and 6352 transitions. [2020-10-29 07:42:29,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:29,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 6352 transitions. [2020-10-29 07:42:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-29 07:42:29,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:29,658 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:29,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:42:29,658 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:29,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:29,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1029712701, now seen corresponding path program 1 times [2020-10-29 07:42:29,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:29,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237164528] [2020-10-29 07:42:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:29,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:34,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:34,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-29 07:42:34,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:42:34,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 07:42:34,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:34,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:34,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:42:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:42:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-29 07:42:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:34,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:42:34,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:34,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:34,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:35,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:35,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:42:35,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 07:42:35,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:35,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:42:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:42:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:35,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:35,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:35,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:35,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:42:35,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:35,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-29 07:42:35,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:35,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:42:35,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:42:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:36,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:36,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:42:36,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 07:42:36,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:36,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:36,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:42:36,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 349 proven. 109 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 07:42:36,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237164528] [2020-10-29 07:42:36,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:36,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:42:36,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122905241] [2020-10-29 07:42:36,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:42:36,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:36,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:42:36,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:42:36,430 INFO L87 Difference]: Start difference. First operand 5123 states and 6352 transitions. Second operand 8 states. [2020-10-29 07:42:56,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:56,370 INFO L93 Difference]: Finished difference Result 11290 states and 14995 transitions. [2020-10-29 07:42:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:42:56,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 468 [2020-10-29 07:42:56,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:56,405 INFO L225 Difference]: With dead ends: 11290 [2020-10-29 07:42:56,405 INFO L226 Difference]: Without dead ends: 6786 [2020-10-29 07:42:56,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:42:56,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6786 states. [2020-10-29 07:42:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6786 to 6732. [2020-10-29 07:42:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6732 states. [2020-10-29 07:42:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6732 states to 6732 states and 8237 transitions. [2020-10-29 07:42:56,642 INFO L78 Accepts]: Start accepts. Automaton has 6732 states and 8237 transitions. Word has length 468 [2020-10-29 07:42:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:56,643 INFO L481 AbstractCegarLoop]: Abstraction has 6732 states and 8237 transitions. [2020-10-29 07:42:56,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:42:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6732 states and 8237 transitions. [2020-10-29 07:42:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-29 07:42:56,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:56,662 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:56,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:42:56,662 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:56,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:56,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1612636922, now seen corresponding path program 1 times [2020-10-29 07:42:56,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:56,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063252837] [2020-10-29 07:42:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:57,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:59,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:01,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:01,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-29 07:43:01,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:43:01,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 07:43:01,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:01,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:01,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:01,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:43:01,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:43:01,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:02,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:02,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:02,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:02,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:43:02,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:02,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:02,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:02,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:02,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:02,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:02,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:43:02,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:02,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:43:02,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:02,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:02,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:43:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:02,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:02,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:02,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:43:02,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:02,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:02,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:02,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:43:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:02,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:02,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:43:02,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 07:43:02,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:02,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:43:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:43:02,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063252837] [2020-10-29 07:43:02,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:02,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:43:02,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135968321] [2020-10-29 07:43:02,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:43:02,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:02,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:43:02,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:43:02,858 INFO L87 Difference]: Start difference. First operand 6732 states and 8237 transitions. Second operand 8 states. [2020-10-29 07:43:16,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:16,620 INFO L93 Difference]: Finished difference Result 13187 states and 16285 transitions. [2020-10-29 07:43:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:43:16,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 530 [2020-10-29 07:43:16,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:16,662 INFO L225 Difference]: With dead ends: 13187 [2020-10-29 07:43:16,663 INFO L226 Difference]: Without dead ends: 6768 [2020-10-29 07:43:16,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:43:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2020-10-29 07:43:16,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 6111. [2020-10-29 07:43:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6111 states. [2020-10-29 07:43:16,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6111 states to 6111 states and 7037 transitions. [2020-10-29 07:43:16,850 INFO L78 Accepts]: Start accepts. Automaton has 6111 states and 7037 transitions. Word has length 530 [2020-10-29 07:43:16,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:16,851 INFO L481 AbstractCegarLoop]: Abstraction has 6111 states and 7037 transitions. [2020-10-29 07:43:16,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:43:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 6111 states and 7037 transitions. [2020-10-29 07:43:16,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2020-10-29 07:43:16,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:16,862 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:16,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:43:16,862 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:16,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1326859153, now seen corresponding path program 1 times [2020-10-29 07:43:16,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:16,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93001124] [2020-10-29 07:43:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:17,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:19,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:22,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:22,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-29 07:43:22,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:43:22,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-29 07:43:22,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:22,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:43:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:43:22,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:22,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:22,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:22,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:22,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:22,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:43:22,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:22,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:22,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:22,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:22,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:43:22,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-29 07:43:22,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:22,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:43:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:22,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:43:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:23,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:23,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:23,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-29 07:43:23,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:23,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:43:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:23,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:43:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:23,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:23,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:43:23,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:23,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:43:23,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:23,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-29 07:43:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 277 proven. 99 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 07:43:23,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93001124] [2020-10-29 07:43:23,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:23,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:23,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472012369] [2020-10-29 07:43:23,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:23,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:23,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:23,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:23,977 INFO L87 Difference]: Start difference. First operand 6111 states and 7037 transitions. Second operand 7 states. [2020-10-29 07:43:37,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:37,560 INFO L93 Difference]: Finished difference Result 14519 states and 16830 transitions. [2020-10-29 07:43:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:43:37,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 548 [2020-10-29 07:43:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:37,595 INFO L225 Difference]: With dead ends: 14519 [2020-10-29 07:43:37,595 INFO L226 Difference]: Without dead ends: 8721 [2020-10-29 07:43:37,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:43:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8721 states. [2020-10-29 07:43:37,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8721 to 8341. [2020-10-29 07:43:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8341 states. [2020-10-29 07:43:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 9496 transitions. [2020-10-29 07:43:37,813 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 9496 transitions. Word has length 548 [2020-10-29 07:43:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:37,814 INFO L481 AbstractCegarLoop]: Abstraction has 8341 states and 9496 transitions. [2020-10-29 07:43:37,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 9496 transitions. [2020-10-29 07:43:37,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-29 07:43:37,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:37,828 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:37,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:43:37,829 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:37,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:37,830 INFO L82 PathProgramCache]: Analyzing trace with hash 115305625, now seen corresponding path program 1 times [2020-10-29 07:43:37,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:37,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293122932] [2020-10-29 07:43:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:38,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:38,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:39,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-29 07:43:39,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:43:39,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1922 [2020-10-29 07:43:39,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:39,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:43:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 07:43:39,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:40,124 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:43:40,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:40,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:40,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:40,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:40,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:43:40,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:40,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:40,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:40,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:40,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:40,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:40,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:40,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:43:40,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:40,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:40,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:40,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:40,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:40,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:40,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 07:43:40,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:40,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:40,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:43:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:40,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:40,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:43:40,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 07:43:40,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:40,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 07:43:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:43:40,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293122932] [2020-10-29 07:43:40,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:40,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:40,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690027642] [2020-10-29 07:43:40,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:40,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:40,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:40,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:40,942 INFO L87 Difference]: Start difference. First operand 8341 states and 9496 transitions. Second operand 7 states. [2020-10-29 07:43:50,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:50,878 INFO L93 Difference]: Finished difference Result 18334 states and 21229 transitions. [2020-10-29 07:43:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:43:50,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 560 [2020-10-29 07:43:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:50,914 INFO L225 Difference]: With dead ends: 18334 [2020-10-29 07:43:50,915 INFO L226 Difference]: Without dead ends: 10306 [2020-10-29 07:43:50,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:43:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2020-10-29 07:43:51,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 10246. [2020-10-29 07:43:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10246 states. [2020-10-29 07:43:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 11644 transitions. [2020-10-29 07:43:51,177 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 11644 transitions. Word has length 560 [2020-10-29 07:43:51,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:51,178 INFO L481 AbstractCegarLoop]: Abstraction has 10246 states and 11644 transitions. [2020-10-29 07:43:51,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:51,179 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 11644 transitions. [2020-10-29 07:43:51,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-29 07:43:51,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:51,192 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:51,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:43:51,193 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:51,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:51,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2121488316, now seen corresponding path program 1 times [2020-10-29 07:43:51,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:51,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032927111] [2020-10-29 07:43:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:51,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:54,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:56,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:56,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-29 07:43:56,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:43:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4670 [2020-10-29 07:43:56,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:56,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:43:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 07:43:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:56,341 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:43:56,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:56,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:56,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:56,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:43:56,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:56,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:56,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:56,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:56,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:56,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:56,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:56,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:43:56,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:56,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:56,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:56,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:56,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:56,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:56,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:56,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:56,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:56,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:43:56,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:56,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:56,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:56,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:43:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:56,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:56,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:56,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:43:56,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:56,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:43:56,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:56,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:43:56,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 343 proven. 56 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:43:57,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032927111] [2020-10-29 07:43:57,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:57,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:43:57,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726333871] [2020-10-29 07:43:57,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:43:57,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:57,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:43:57,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:43:57,208 INFO L87 Difference]: Start difference. First operand 10246 states and 11644 transitions. Second operand 6 states. [2020-10-29 07:44:13,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:13,824 INFO L93 Difference]: Finished difference Result 20448 states and 24971 transitions. [2020-10-29 07:44:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:44:13,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 588 [2020-10-29 07:44:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:13,905 INFO L225 Difference]: With dead ends: 20448 [2020-10-29 07:44:13,905 INFO L226 Difference]: Without dead ends: 13318 [2020-10-29 07:44:13,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:44:13,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13318 states. [2020-10-29 07:44:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13318 to 12877. [2020-10-29 07:44:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12877 states. [2020-10-29 07:44:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12877 states to 12877 states and 14933 transitions. [2020-10-29 07:44:14,312 INFO L78 Accepts]: Start accepts. Automaton has 12877 states and 14933 transitions. Word has length 588 [2020-10-29 07:44:14,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:14,313 INFO L481 AbstractCegarLoop]: Abstraction has 12877 states and 14933 transitions. [2020-10-29 07:44:14,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:44:14,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12877 states and 14933 transitions. [2020-10-29 07:44:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2020-10-29 07:44:14,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:14,334 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 07:44:14,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:44:14,334 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:14,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:14,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1287165002, now seen corresponding path program 1 times [2020-10-29 07:44:14,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:14,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11008445] [2020-10-29 07:44:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:14,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:19,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:19,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-29 07:44:19,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:44:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 07:44:19,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:19,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 512 [2020-10-29 07:44:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 07:44:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:19,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:19,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:44:19,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:19,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:19,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:19,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:19,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:44:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 07:44:19,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:19,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:44:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:19,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:19,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:44:19,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:44:19,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:19,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:19,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:44:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:19,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:20,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:44:20,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:20,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:44:20,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:20,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:44:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-10-29 07:44:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:20,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:20,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:44:20,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:20,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 07:44:20,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:20,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 07:44:20,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 521 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-29 07:44:20,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11008445] [2020-10-29 07:44:20,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:20,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:20,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984302773] [2020-10-29 07:44:20,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:20,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:20,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:20,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:20,509 INFO L87 Difference]: Start difference. First operand 12877 states and 14933 transitions. Second operand 7 states. [2020-10-29 07:44:27,061 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 63