/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:06:12,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:06:12,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:06:12,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:06:12,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:06:12,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:06:12,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:06:12,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:06:12,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:06:12,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:06:12,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:06:12,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:06:12,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:06:12,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:06:12,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:06:12,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:06:12,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:06:12,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:06:12,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:06:12,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:06:12,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:06:12,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:06:12,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:06:12,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:06:12,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:06:12,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:06:12,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:06:12,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:06:12,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:06:12,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:06:12,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:06:12,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:06:12,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:06:12,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:06:12,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:06:12,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:06:12,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:06:12,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:06:12,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:06:12,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:06:12,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:06:12,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:06:12,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:06:12,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:06:12,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:06:12,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:06:12,330 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:06:12,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:06:12,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:06:12,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:06:12,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:06:12,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:06:12,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:06:12,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:06:12,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:06:12,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:06:12,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:06:12,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:06:12,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:06:12,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:06:12,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:06:12,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:06:12,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:06:12,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:06:12,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:06:12,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:06:12,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:06:12,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:06:12,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:06:12,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:06:12,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:06:12,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:06:12,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:06:12,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:06:12,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:06:12,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:06:12,795 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:06:12,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30.c [2020-10-28 12:06:12,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfb66251a/967493b850af458d9df9cdb741ab06e4/FLAG4bfa2dab8 [2020-10-28 12:06:13,749 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:06:13,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label30.c [2020-10-28 12:06:13,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfb66251a/967493b850af458d9df9cdb741ab06e4/FLAG4bfa2dab8 [2020-10-28 12:06:13,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfb66251a/967493b850af458d9df9cdb741ab06e4 [2020-10-28 12:06:13,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:06:13,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:06:13,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:06:13,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:06:13,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:06:13,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:06:13" (1/1) ... [2020-10-28 12:06:13,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ce89df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:13, skipping insertion in model container [2020-10-28 12:06:13,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:06:13" (1/1) ... [2020-10-28 12:06:13,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:06:14,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:06:14,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:06:14,736 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:06:14,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:06:14,961 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:06:14,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:14 WrapperNode [2020-10-28 12:06:14,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:06:14,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:06:14,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:06:14,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:06:14,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:14" (1/1) ... [2020-10-28 12:06:14,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:14" (1/1) ... [2020-10-28 12:06:15,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:14" (1/1) ... [2020-10-28 12:06:15,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:14" (1/1) ... [2020-10-28 12:06:15,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:14" (1/1) ... [2020-10-28 12:06:15,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:14" (1/1) ... [2020-10-28 12:06:15,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:14" (1/1) ... [2020-10-28 12:06:15,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:06:15,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:06:15,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:06:15,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:06:15,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:06:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:06:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:06:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:06:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:06:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:06:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:06:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:06:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:06:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:06:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:06:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:06:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:06:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:06:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:06:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:06:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:06:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:06:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:06:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:06:17,325 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:06:17,325 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:06:17,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:06:17 BoogieIcfgContainer [2020-10-28 12:06:17,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:06:17,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:06:17,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:06:17,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:06:17,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:06:13" (1/3) ... [2020-10-28 12:06:17,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f281bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:06:17, skipping insertion in model container [2020-10-28 12:06:17,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:14" (2/3) ... [2020-10-28 12:06:17,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f281bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:06:17, skipping insertion in model container [2020-10-28 12:06:17,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:06:17" (3/3) ... [2020-10-28 12:06:17,341 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label30.c [2020-10-28 12:06:17,354 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:06:17,360 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:06:17,375 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:06:17,420 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:06:17,420 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:06:17,420 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:06:17,420 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:06:17,420 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:06:17,420 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:06:17,421 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:06:17,421 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:06:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:06:17,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 12:06:17,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:17,468 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] [2020-10-28 12:06:17,469 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:17,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:17,475 INFO L82 PathProgramCache]: Analyzing trace with hash -964503696, now seen corresponding path program 1 times [2020-10-28 12:06:17,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:17,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017466172] [2020-10-28 12:06:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:17,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:18,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:18,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 12:06:18,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:18,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-28 12:06:18,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:18,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:06:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 12:06:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:06:18,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:18,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:18,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:18,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:18,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:06:18,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:18,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:18,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:18,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:18,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:06:18,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017466172] [2020-10-28 12:06:18,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:06:18,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:06:18,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913469392] [2020-10-28 12:06:18,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:06:18,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:18,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:06:18,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:06:18,695 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:06:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:22,195 INFO L93 Difference]: Finished difference Result 810 states and 1408 transitions. [2020-10-28 12:06:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:22,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-28 12:06:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:22,223 INFO L225 Difference]: With dead ends: 810 [2020-10-28 12:06:22,224 INFO L226 Difference]: Without dead ends: 434 [2020-10-28 12:06:22,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-28 12:06:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 425. [2020-10-28 12:06:22,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-28 12:06:22,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-28 12:06:22,323 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 36 [2020-10-28 12:06:22,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:22,323 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-28 12:06:22,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:06:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-28 12:06:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 12:06:22,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:22,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:22,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:06:22,335 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:22,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:22,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1778426764, now seen corresponding path program 1 times [2020-10-28 12:06:22,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:22,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079911022] [2020-10-28 12:06:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:22,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:22,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:23,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:24,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:06:24,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:24,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2021 [2020-10-28 12:06:24,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:24,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:06:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:06:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:24,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:24,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:24,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:24,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:24,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:06:24,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:24,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:06:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:24,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:24,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:06:24,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 12:06:24,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:24,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:06:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:06:24,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079911022] [2020-10-28 12:06:24,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:06:24,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:06:24,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718394857] [2020-10-28 12:06:24,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:24,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:24,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:24,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:24,915 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 7 states. [2020-10-28 12:06:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:28,584 INFO L93 Difference]: Finished difference Result 1267 states and 1855 transitions. [2020-10-28 12:06:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:28,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-28 12:06:28,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:28,596 INFO L225 Difference]: With dead ends: 1267 [2020-10-28 12:06:28,596 INFO L226 Difference]: Without dead ends: 848 [2020-10-28 12:06:28,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-28 12:06:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 816. [2020-10-28 12:06:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-28 12:06:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1094 transitions. [2020-10-28 12:06:28,684 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1094 transitions. Word has length 108 [2020-10-28 12:06:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:28,685 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1094 transitions. [2020-10-28 12:06:28,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1094 transitions. [2020-10-28 12:06:28,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 12:06:28,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:28,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:28,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:06:28,688 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:28,689 INFO L82 PathProgramCache]: Analyzing trace with hash 43255336, now seen corresponding path program 1 times [2020-10-28 12:06:28,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:28,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68056061] [2020-10-28 12:06:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:29,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:29,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:29,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 12:06:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-10-28 12:06:29,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:29,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:06:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:06:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:29,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:29,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:29,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:29,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:29,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:06:29,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:29,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:29,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:30,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:30,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:06:30,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 12:06:30,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:30,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:06:30,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:06:30,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68056061] [2020-10-28 12:06:30,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:06:30,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:06:30,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084172591] [2020-10-28 12:06:30,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:30,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:30,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:30,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:30,152 INFO L87 Difference]: Start difference. First operand 816 states and 1094 transitions. Second operand 7 states. [2020-10-28 12:06:33,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:33,618 INFO L93 Difference]: Finished difference Result 2067 states and 2859 transitions. [2020-10-28 12:06:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:33,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-28 12:06:33,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:33,634 INFO L225 Difference]: With dead ends: 2067 [2020-10-28 12:06:33,634 INFO L226 Difference]: Without dead ends: 1257 [2020-10-28 12:06:33,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2020-10-28 12:06:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1216. [2020-10-28 12:06:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-10-28 12:06:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1530 transitions. [2020-10-28 12:06:33,707 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1530 transitions. Word has length 111 [2020-10-28 12:06:33,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:33,708 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1530 transitions. [2020-10-28 12:06:33,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1530 transitions. [2020-10-28 12:06:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 12:06:33,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:33,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:33,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:06:33,726 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:33,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1990972669, now seen corresponding path program 1 times [2020-10-28 12:06:33,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:33,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237038973] [2020-10-28 12:06:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:34,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:34,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 12:06:34,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:34,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-28 12:06:34,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:34,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:34,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:34,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:06:34,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 12:06:34,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:34,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:34,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:34,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:34,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:06:34,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:34,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:34,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:34,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:34,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:34,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:34,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:34,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 12:06:34,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:34,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:06:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:06:34,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237038973] [2020-10-28 12:06:34,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:34,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:34,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259612451] [2020-10-28 12:06:34,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:34,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:34,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:34,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:34,733 INFO L87 Difference]: Start difference. First operand 1216 states and 1530 transitions. Second operand 5 states. [2020-10-28 12:06:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:37,560 INFO L93 Difference]: Finished difference Result 2456 states and 3276 transitions. [2020-10-28 12:06:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:37,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 12:06:37,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:37,576 INFO L225 Difference]: With dead ends: 2456 [2020-10-28 12:06:37,577 INFO L226 Difference]: Without dead ends: 1624 [2020-10-28 12:06:37,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:37,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-10-28 12:06:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1608. [2020-10-28 12:06:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2020-10-28 12:06:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2077 transitions. [2020-10-28 12:06:37,645 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2077 transitions. Word has length 167 [2020-10-28 12:06:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:37,647 INFO L481 AbstractCegarLoop]: Abstraction has 1608 states and 2077 transitions. [2020-10-28 12:06:37,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2077 transitions. [2020-10-28 12:06:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 12:06:37,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:37,654 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:06:37,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:06:37,655 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:37,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:37,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2113459390, now seen corresponding path program 1 times [2020-10-28 12:06:37,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:37,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719085688] [2020-10-28 12:06:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:38,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:39,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:39,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 12:06:39,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:39,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2109 [2020-10-28 12:06:39,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:39,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:39,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:06:39,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:06:39,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:39,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:40,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:40,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:40,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:06:40,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:40,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:40,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:40,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:40,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:40,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:40,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:40,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:06:40,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:40,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:06:40,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:06:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:40,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:40,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:06:40,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 12:06:40,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:40,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:06:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:40,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719085688] [2020-10-28 12:06:40,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:40,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:06:40,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001054848] [2020-10-28 12:06:40,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:06:40,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:40,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:06:40,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:06:40,528 INFO L87 Difference]: Start difference. First operand 1608 states and 2077 transitions. Second operand 8 states. [2020-10-28 12:06:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:43,947 INFO L93 Difference]: Finished difference Result 3238 states and 4314 transitions. [2020-10-28 12:06:43,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:06:43,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-10-28 12:06:43,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:43,962 INFO L225 Difference]: With dead ends: 3238 [2020-10-28 12:06:43,963 INFO L226 Difference]: Without dead ends: 2014 [2020-10-28 12:06:43,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:06:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2020-10-28 12:06:44,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2001. [2020-10-28 12:06:44,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2001 states. [2020-10-28 12:06:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2586 transitions. [2020-10-28 12:06:44,034 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2586 transitions. Word has length 224 [2020-10-28 12:06:44,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:44,034 INFO L481 AbstractCegarLoop]: Abstraction has 2001 states and 2586 transitions. [2020-10-28 12:06:44,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:06:44,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2586 transitions. [2020-10-28 12:06:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-28 12:06:44,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:44,039 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:06:44,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:06:44,039 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:44,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1577735882, now seen corresponding path program 1 times [2020-10-28 12:06:44,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:44,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718794935] [2020-10-28 12:06:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:44,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:44,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:46,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:46,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-28 12:06:46,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2440 [2020-10-28 12:06:46,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:46,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:06:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:06:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:46,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:46,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:46,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:46,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:46,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:46,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:46,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:46,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:46,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:46,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:46,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:46,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:46,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:46,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:06:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:46,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:06:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:46,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:47,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:47,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:06:47,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:47,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:06:47,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:47,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:06:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:47,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718794935] [2020-10-28 12:06:47,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:47,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:47,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154738282] [2020-10-28 12:06:47,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:47,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:47,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:47,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:47,269 INFO L87 Difference]: Start difference. First operand 2001 states and 2586 transitions. Second operand 7 states. [2020-10-28 12:06:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:50,629 INFO L93 Difference]: Finished difference Result 4038 states and 5353 transitions. [2020-10-28 12:06:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:06:50,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-28 12:06:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:50,646 INFO L225 Difference]: With dead ends: 4038 [2020-10-28 12:06:50,647 INFO L226 Difference]: Without dead ends: 2421 [2020-10-28 12:06:50,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:06:50,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2020-10-28 12:06:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2406. [2020-10-28 12:06:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2406 states. [2020-10-28 12:06:50,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 3072 transitions. [2020-10-28 12:06:50,730 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 3072 transitions. Word has length 225 [2020-10-28 12:06:50,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:50,730 INFO L481 AbstractCegarLoop]: Abstraction has 2406 states and 3072 transitions. [2020-10-28 12:06:50,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:50,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 3072 transitions. [2020-10-28 12:06:50,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-28 12:06:50,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:50,736 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:50,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:06:50,737 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:50,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:50,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1410059190, now seen corresponding path program 1 times [2020-10-28 12:06:50,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:50,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705079684] [2020-10-28 12:06:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:51,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:51,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:53,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:53,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-28 12:06:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2574 [2020-10-28 12:06:53,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:53,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:06:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:06:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:53,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:53,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:53,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:53,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:06:53,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:53,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:53,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:53,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:53,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:53,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:53,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:53,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:53,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 12:06:53,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:53,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:53,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:53,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:53,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:06:53,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:53,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:54,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:54,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:06:54,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:06:54,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:54,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:06:54,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:54,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705079684] [2020-10-28 12:06:54,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:54,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:54,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890148882] [2020-10-28 12:06:54,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:54,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:54,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:54,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:54,184 INFO L87 Difference]: Start difference. First operand 2406 states and 3072 transitions. Second operand 7 states. [2020-10-28 12:06:57,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:57,828 INFO L93 Difference]: Finished difference Result 6218 states and 8272 transitions. [2020-10-28 12:06:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:57,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-28 12:06:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:57,856 INFO L225 Difference]: With dead ends: 6218 [2020-10-28 12:06:57,856 INFO L226 Difference]: Without dead ends: 4196 [2020-10-28 12:06:57,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:57,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2020-10-28 12:06:57,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 3968. [2020-10-28 12:06:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3968 states. [2020-10-28 12:06:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 4990 transitions. [2020-10-28 12:06:57,998 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 4990 transitions. Word has length 235 [2020-10-28 12:06:57,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:57,999 INFO L481 AbstractCegarLoop]: Abstraction has 3968 states and 4990 transitions. [2020-10-28 12:06:57,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:57,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 4990 transitions. [2020-10-28 12:06:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-28 12:06:58,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:58,005 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:58,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:06:58,006 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:58,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:58,006 INFO L82 PathProgramCache]: Analyzing trace with hash -473385686, now seen corresponding path program 1 times [2020-10-28 12:06:58,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:58,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983461021] [2020-10-28 12:06:58,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:58,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:58,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:58,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:58,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 12:06:58,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:58,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-28 12:06:58,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:58,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:06:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 12:06:58,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:58,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:59,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:59,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:59,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:59,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:59,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:59,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:59,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:59,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:59,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:59,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:59,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:59,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:06:59,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:59,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:59,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:59,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:59,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:59,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:06:59,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:59,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:06:59,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:59,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:59,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:06:59,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:06:59,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983461021] [2020-10-28 12:06:59,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:59,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:06:59,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333875783] [2020-10-28 12:06:59,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:06:59,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:59,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:06:59,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:59,365 INFO L87 Difference]: Start difference. First operand 3968 states and 4990 transitions. Second operand 6 states. [2020-10-28 12:07:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:03,455 INFO L93 Difference]: Finished difference Result 8358 states and 10728 transitions. [2020-10-28 12:07:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:07:03,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2020-10-28 12:07:03,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:03,483 INFO L225 Difference]: With dead ends: 8358 [2020-10-28 12:07:03,483 INFO L226 Difference]: Without dead ends: 4774 [2020-10-28 12:07:03,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:07:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2020-10-28 12:07:03,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 4362. [2020-10-28 12:07:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4362 states. [2020-10-28 12:07:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 5585 transitions. [2020-10-28 12:07:03,667 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 5585 transitions. Word has length 236 [2020-10-28 12:07:03,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:03,668 INFO L481 AbstractCegarLoop]: Abstraction has 4362 states and 5585 transitions. [2020-10-28 12:07:03,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:07:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 5585 transitions. [2020-10-28 12:07:03,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 12:07:03,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:03,676 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:03,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:07:03,676 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:03,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:03,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1465334233, now seen corresponding path program 1 times [2020-10-28 12:07:03,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:03,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464169618] [2020-10-28 12:07:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:04,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:05,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:05,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 12:07:05,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1453 [2020-10-28 12:07:05,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:05,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:05,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:07:05,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:07:05,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:07:05,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:05,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:05,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:05,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:05,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:07:05,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:05,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:05,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:05,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:05,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:05,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:05,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:07:05,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:05,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:07:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:05,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:05,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:05,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:05,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:07:05,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 12:07:05,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:05,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:07:05,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:07:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 112 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:07:05,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464169618] [2020-10-28 12:07:05,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:05,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:07:05,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748493894] [2020-10-28 12:07:05,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:07:05,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:05,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:07:05,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:07:05,901 INFO L87 Difference]: Start difference. First operand 4362 states and 5585 transitions. Second operand 6 states. [2020-10-28 12:07:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:09,443 INFO L93 Difference]: Finished difference Result 9450 states and 13050 transitions. [2020-10-28 12:07:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:07:09,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 256 [2020-10-28 12:07:09,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:09,477 INFO L225 Difference]: With dead ends: 9450 [2020-10-28 12:07:09,477 INFO L226 Difference]: Without dead ends: 5472 [2020-10-28 12:07:09,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:07:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2020-10-28 12:07:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 5371. [2020-10-28 12:07:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5371 states. [2020-10-28 12:07:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5371 states to 5371 states and 7021 transitions. [2020-10-28 12:07:09,670 INFO L78 Accepts]: Start accepts. Automaton has 5371 states and 7021 transitions. Word has length 256 [2020-10-28 12:07:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:09,671 INFO L481 AbstractCegarLoop]: Abstraction has 5371 states and 7021 transitions. [2020-10-28 12:07:09,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:07:09,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5371 states and 7021 transitions. [2020-10-28 12:07:09,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 12:07:09,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:09,680 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:09,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:07:09,680 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:09,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:09,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1008744811, now seen corresponding path program 1 times [2020-10-28 12:07:09,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:09,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611688208] [2020-10-28 12:07:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:09,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:09,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:11,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 12:07:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1872 [2020-10-28 12:07:11,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:11,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-28 12:07:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 12:07:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:11,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:11,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:11,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:11,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:11,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:11,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:07:11,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:11,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:11,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:11,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:11,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:11,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:11,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:07:11,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:11,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:11,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:12,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:12,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 12:07:12,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:12,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:07:12,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:12,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:07:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:07:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 12:07:12,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611688208] [2020-10-28 12:07:12,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:12,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:07:12,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507710746] [2020-10-28 12:07:12,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:07:12,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:12,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:07:12,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:07:12,199 INFO L87 Difference]: Start difference. First operand 5371 states and 7021 transitions. Second operand 5 states. [2020-10-28 12:07:15,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:15,609 INFO L93 Difference]: Finished difference Result 12471 states and 16996 transitions. [2020-10-28 12:07:15,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:07:15,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-28 12:07:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:15,655 INFO L225 Difference]: With dead ends: 12471 [2020-10-28 12:07:15,655 INFO L226 Difference]: Without dead ends: 7294 [2020-10-28 12:07:15,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:07:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2020-10-28 12:07:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 6904. [2020-10-28 12:07:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6904 states. [2020-10-28 12:07:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 9100 transitions. [2020-10-28 12:07:15,889 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 9100 transitions. Word has length 258 [2020-10-28 12:07:15,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:15,890 INFO L481 AbstractCegarLoop]: Abstraction has 6904 states and 9100 transitions. [2020-10-28 12:07:15,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:07:15,890 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 9100 transitions. [2020-10-28 12:07:15,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 12:07:15,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:15,898 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:07:15,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:07:15,899 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:15,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:15,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1462895309, now seen corresponding path program 1 times [2020-10-28 12:07:15,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:15,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771132660] [2020-10-28 12:07:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:16,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:16,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 12:07:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-28 12:07:16,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:16,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:07:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:07:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:16,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:16,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:16,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:16,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:16,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:07:16,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:16,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:16,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:16,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:16,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:07:16,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:16,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:07:16,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:16,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:16,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:16,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:07:16,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:16,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:07:16,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:16,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:07:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:07:17,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771132660] [2020-10-28 12:07:17,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:17,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:17,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526346220] [2020-10-28 12:07:17,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:17,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:17,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:17,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:17,206 INFO L87 Difference]: Start difference. First operand 6904 states and 9100 transitions. Second operand 7 states. [2020-10-28 12:07:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:20,663 INFO L93 Difference]: Finished difference Result 13839 states and 18371 transitions. [2020-10-28 12:07:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:07:20,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-28 12:07:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:20,692 INFO L225 Difference]: With dead ends: 13839 [2020-10-28 12:07:20,692 INFO L226 Difference]: Without dead ends: 7319 [2020-10-28 12:07:20,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7319 states. [2020-10-28 12:07:20,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7319 to 7294. [2020-10-28 12:07:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7294 states. [2020-10-28 12:07:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 9595 transitions. [2020-10-28 12:07:20,892 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 9595 transitions. Word has length 261 [2020-10-28 12:07:20,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:20,893 INFO L481 AbstractCegarLoop]: Abstraction has 7294 states and 9595 transitions. [2020-10-28 12:07:20,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 9595 transitions. [2020-10-28 12:07:20,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-28 12:07:20,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:20,904 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:20,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:07:20,904 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:20,905 INFO L82 PathProgramCache]: Analyzing trace with hash 884861118, now seen corresponding path program 1 times [2020-10-28 12:07:20,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:20,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953609382] [2020-10-28 12:07:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:21,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:22,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:22,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-28 12:07:22,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:22,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1527 [2020-10-28 12:07:22,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:22,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:07:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:07:22,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:07:22,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:22,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:22,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:22,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:07:22,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:22,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:22,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:22,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:22,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:22,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:22,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:22,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:22,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:07:22,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:22,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-28 12:07:22,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:22,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:22,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:07:22,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:07:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:07:23,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:23,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 12:07:23,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:07:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:07:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:07:23,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953609382] [2020-10-28 12:07:23,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:23,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:23,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015301754] [2020-10-28 12:07:23,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:23,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:23,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:23,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:23,720 INFO L87 Difference]: Start difference. First operand 7294 states and 9595 transitions. Second operand 7 states. [2020-10-28 12:07:27,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:27,663 INFO L93 Difference]: Finished difference Result 15004 states and 19996 transitions. [2020-10-28 12:07:27,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:07:27,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-28 12:07:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:27,692 INFO L225 Difference]: With dead ends: 15004 [2020-10-28 12:07:27,692 INFO L226 Difference]: Without dead ends: 7903 [2020-10-28 12:07:27,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:07:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7903 states. [2020-10-28 12:07:27,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7903 to 7872. [2020-10-28 12:07:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7872 states. [2020-10-28 12:07:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7872 states to 7872 states and 10228 transitions. [2020-10-28 12:07:27,900 INFO L78 Accepts]: Start accepts. Automaton has 7872 states and 10228 transitions. Word has length 277 [2020-10-28 12:07:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:27,901 INFO L481 AbstractCegarLoop]: Abstraction has 7872 states and 10228 transitions. [2020-10-28 12:07:27,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7872 states and 10228 transitions. [2020-10-28 12:07:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-28 12:07:27,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:27,913 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:27,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:07:27,913 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:27,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:27,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1628334902, now seen corresponding path program 1 times [2020-10-28 12:07:27,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:27,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907456461] [2020-10-28 12:07:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:28,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:28,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:32,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:32,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-28 12:07:32,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:07:32,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 12:07:32,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:32,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:07:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:07:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 12:07:32,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:33,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:33,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:33,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:33,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:33,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:33,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:33,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:33,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:33,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:33,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:33,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:07:33,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:33,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 12:07:33,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:33,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:33,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:07:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:33,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:07:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:33,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:33,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:33,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:07:33,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 12:07:33,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:33,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:07:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:07:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:33,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:33,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:33,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 12:07:33,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:07:33,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:33,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:07:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 220 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 12:07:33,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907456461] [2020-10-28 12:07:33,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:33,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:33,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166348982] [2020-10-28 12:07:33,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:33,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:33,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:33,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:33,789 INFO L87 Difference]: Start difference. First operand 7872 states and 10228 transitions. Second operand 7 states. [2020-10-28 12:07:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:37,074 INFO L93 Difference]: Finished difference Result 14752 states and 19132 transitions. [2020-10-28 12:07:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:07:37,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-28 12:07:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:37,110 INFO L225 Difference]: With dead ends: 14752 [2020-10-28 12:07:37,110 INFO L226 Difference]: Without dead ends: 7066 [2020-10-28 12:07:37,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:07:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7066 states. [2020-10-28 12:07:37,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7066 to 7046. [2020-10-28 12:07:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7046 states. [2020-10-28 12:07:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 8639 transitions. [2020-10-28 12:07:37,268 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 8639 transitions. Word has length 307 [2020-10-28 12:07:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:37,269 INFO L481 AbstractCegarLoop]: Abstraction has 7046 states and 8639 transitions. [2020-10-28 12:07:37,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 8639 transitions. [2020-10-28 12:07:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 12:07:37,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:37,280 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:37,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:07:37,280 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:37,281 INFO L82 PathProgramCache]: Analyzing trace with hash -483176046, now seen corresponding path program 1 times [2020-10-28 12:07:37,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:37,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132393500] [2020-10-28 12:07:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:37,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:39,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:39,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-28 12:07:39,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2311 [2020-10-28 12:07:39,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:39,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:07:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 12:07:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:39,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:39,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:39,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:39,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:39,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:39,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:39,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:39,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:39,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:39,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:07:39,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:07:39,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:39,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:39,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:07:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:39,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:39,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:07:39,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 12:07:39,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:39,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:07:39,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:07:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:40,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:40,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:07:40,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:07:40,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:40,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:07:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:40,212 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 12:07:40,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132393500] [2020-10-28 12:07:40,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:40,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:40,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539606223] [2020-10-28 12:07:40,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:40,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:40,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:40,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:40,215 INFO L87 Difference]: Start difference. First operand 7046 states and 8639 transitions. Second operand 7 states. [2020-10-28 12:07:44,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:44,263 INFO L93 Difference]: Finished difference Result 14442 states and 18403 transitions. [2020-10-28 12:07:44,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:07:44,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-28 12:07:44,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:44,294 INFO L225 Difference]: With dead ends: 14442 [2020-10-28 12:07:44,294 INFO L226 Difference]: Without dead ends: 7780 [2020-10-28 12:07:44,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:44,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2020-10-28 12:07:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 7638. [2020-10-28 12:07:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7638 states. [2020-10-28 12:07:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 9324 transitions. [2020-10-28 12:07:44,491 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 9324 transitions. Word has length 325 [2020-10-28 12:07:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:44,492 INFO L481 AbstractCegarLoop]: Abstraction has 7638 states and 9324 transitions. [2020-10-28 12:07:44,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 9324 transitions. [2020-10-28 12:07:44,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-28 12:07:44,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:44,505 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:44,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:07:44,506 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:44,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:44,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1583820518, now seen corresponding path program 1 times [2020-10-28 12:07:44,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:44,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286855276] [2020-10-28 12:07:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:44,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:45,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:45,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-28 12:07:45,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-28 12:07:45,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:45,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:07:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:07:45,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:46,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:46,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:46,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:46,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:46,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:07:46,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:46,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:46,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:46,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:46,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:07:46,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:46,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:07:46,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:46,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:46,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:46,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:07:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:46,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:46,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:07:46,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:07:46,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:46,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:07:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:07:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:46,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:46,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:07:46,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:46,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:07:46,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:46,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:07:46,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 12:07:46,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286855276] [2020-10-28 12:07:46,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:46,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:46,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087724047] [2020-10-28 12:07:46,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:46,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:46,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:46,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:46,566 INFO L87 Difference]: Start difference. First operand 7638 states and 9324 transitions. Second operand 7 states. [2020-10-28 12:07:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:50,454 INFO L93 Difference]: Finished difference Result 15522 states and 19070 transitions. [2020-10-28 12:07:50,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:07:50,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-28 12:07:50,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:50,481 INFO L225 Difference]: With dead ends: 15522 [2020-10-28 12:07:50,481 INFO L226 Difference]: Without dead ends: 8268 [2020-10-28 12:07:50,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2020-10-28 12:07:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 7852. [2020-10-28 12:07:50,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7852 states. [2020-10-28 12:07:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7852 states to 7852 states and 9549 transitions. [2020-10-28 12:07:50,634 INFO L78 Accepts]: Start accepts. Automaton has 7852 states and 9549 transitions. Word has length 330 [2020-10-28 12:07:50,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:50,634 INFO L481 AbstractCegarLoop]: Abstraction has 7852 states and 9549 transitions. [2020-10-28 12:07:50,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:50,635 INFO L276 IsEmpty]: Start isEmpty. Operand 7852 states and 9549 transitions. [2020-10-28 12:07:50,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-28 12:07:50,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:50,648 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:50,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:07:50,648 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:50,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1726557628, now seen corresponding path program 1 times [2020-10-28 12:07:50,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:50,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35105664] [2020-10-28 12:07:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:50,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:51,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:52,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:53,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 12:07:53,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:07:53,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2996 [2020-10-28 12:07:53,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:53,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:07:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-10-28 12:07:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:07:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:53,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:53,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:53,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:07:53,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:53,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:53,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:53,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:53,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:53,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:53,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:07:53,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:53,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:53,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:54,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:54,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:54,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:54,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:07:54,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:54,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:07:54,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:54,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:07:54,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:54,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-28 12:07:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:54,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:54,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 12:07:54,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:07:54,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:54,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:07:54,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 194 proven. 29 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 12:07:54,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35105664] [2020-10-28 12:07:54,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:54,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:07:54,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190540224] [2020-10-28 12:07:54,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:07:54,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:54,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:07:54,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:07:54,328 INFO L87 Difference]: Start difference. First operand 7852 states and 9549 transitions. Second operand 6 states. [2020-10-28 12:07:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:57,818 INFO L93 Difference]: Finished difference Result 17479 states and 21528 transitions. [2020-10-28 12:07:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:07:57,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2020-10-28 12:07:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:57,851 INFO L225 Difference]: With dead ends: 17479 [2020-10-28 12:07:57,851 INFO L226 Difference]: Without dead ends: 9821 [2020-10-28 12:07:57,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:07:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9821 states. [2020-10-28 12:07:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9821 to 9784. [2020-10-28 12:07:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9784 states. [2020-10-28 12:07:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9784 states to 9784 states and 11756 transitions. [2020-10-28 12:07:58,123 INFO L78 Accepts]: Start accepts. Automaton has 9784 states and 11756 transitions. Word has length 340 [2020-10-28 12:07:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:58,124 INFO L481 AbstractCegarLoop]: Abstraction has 9784 states and 11756 transitions. [2020-10-28 12:07:58,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:07:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 9784 states and 11756 transitions. [2020-10-28 12:07:58,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 12:07:58,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:58,135 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:58,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:07:58,135 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:58,136 INFO L82 PathProgramCache]: Analyzing trace with hash 909881751, now seen corresponding path program 1 times [2020-10-28 12:07:58,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:58,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458769700] [2020-10-28 12:07:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:58,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:58,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 12:07:58,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:58,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-28 12:07:58,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:58,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:58,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:58,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-28 12:07:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 12:07:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:58,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:58,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:58,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:58,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:07:58,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:58,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:58,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:58,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:58,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:58,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:07:58,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:58,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:58,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:59,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:59,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:07:59,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:59,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 12:07:59,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:59,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-28 12:07:59,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:07:59,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458769700] [2020-10-28 12:07:59,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:59,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:07:59,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010587838] [2020-10-28 12:07:59,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:07:59,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:59,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:07:59,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:07:59,162 INFO L87 Difference]: Start difference. First operand 9784 states and 11756 transitions. Second operand 5 states. [2020-10-28 12:08:02,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:02,201 INFO L93 Difference]: Finished difference Result 23238 states and 28140 transitions. [2020-10-28 12:08:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:08:02,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-28 12:08:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:02,243 INFO L225 Difference]: With dead ends: 23238 [2020-10-28 12:08:02,243 INFO L226 Difference]: Without dead ends: 13838 [2020-10-28 12:08:02,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:08:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13838 states. [2020-10-28 12:08:02,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13838 to 13237. [2020-10-28 12:08:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13237 states. [2020-10-28 12:08:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13237 states to 13237 states and 15810 transitions. [2020-10-28 12:08:02,550 INFO L78 Accepts]: Start accepts. Automaton has 13237 states and 15810 transitions. Word has length 342 [2020-10-28 12:08:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:02,551 INFO L481 AbstractCegarLoop]: Abstraction has 13237 states and 15810 transitions. [2020-10-28 12:08:02,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:08:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 13237 states and 15810 transitions. [2020-10-28 12:08:02,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-28 12:08:02,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:02,562 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:02,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:08:02,562 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:02,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:02,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1500483978, now seen corresponding path program 1 times [2020-10-28 12:08:02,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:02,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804120130] [2020-10-28 12:08:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:02,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:04,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:05,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-28 12:08:05,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:08:05,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2530 [2020-10-28 12:08:05,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:05,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:08:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:08:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:08:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:05,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:05,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:05,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:08:05,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:05,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:05,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:05,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:08:05,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:05,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:08:05,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:05,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:05,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:08:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:05,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:08:05,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:08:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:05,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:08:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:08:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:05,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:08:05,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 12:08:05,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:05,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:08:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 92 proven. 3 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-28 12:08:05,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804120130] [2020-10-28 12:08:05,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:05,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:08:05,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271036745] [2020-10-28 12:08:05,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:08:05,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:05,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:08:05,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:08:05,733 INFO L87 Difference]: Start difference. First operand 13237 states and 15810 transitions. Second operand 6 states. [2020-10-28 12:08:09,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:09,857 INFO L93 Difference]: Finished difference Result 15540 states and 18582 transitions. [2020-10-28 12:08:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:08:09,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 352 [2020-10-28 12:08:09,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:09,898 INFO L225 Difference]: With dead ends: 15540 [2020-10-28 12:08:09,898 INFO L226 Difference]: Without dead ends: 15537 [2020-10-28 12:08:09,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:08:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15537 states. [2020-10-28 12:08:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15537 to 13807. [2020-10-28 12:08:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13807 states. [2020-10-28 12:08:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13807 states to 13807 states and 16542 transitions. [2020-10-28 12:08:10,199 INFO L78 Accepts]: Start accepts. Automaton has 13807 states and 16542 transitions. Word has length 352 [2020-10-28 12:08:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:10,199 INFO L481 AbstractCegarLoop]: Abstraction has 13807 states and 16542 transitions. [2020-10-28 12:08:10,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:08:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 13807 states and 16542 transitions. [2020-10-28 12:08:10,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-28 12:08:10,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:10,212 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:10,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:08:10,213 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:10,213 INFO L82 PathProgramCache]: Analyzing trace with hash -648164318, now seen corresponding path program 1 times [2020-10-28 12:08:10,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:10,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137489710] [2020-10-28 12:08:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-28 12:08:11,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1445 [2020-10-28 12:08:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:11,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:08:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:08:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:11,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:11,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:11,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:11,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:11,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:11,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:08:11,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:11,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:11,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:11,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:11,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:11,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:08:11,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:11,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:08:11,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:11,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:11,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:11,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:08:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:12,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:12,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:12,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:08:12,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:12,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:08:12,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:12,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:08:12,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:08:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:12,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:12,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:08:12,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:08:12,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:12,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:08:12,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:08:12,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137489710] [2020-10-28 12:08:12,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:12,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:12,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888405260] [2020-10-28 12:08:12,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:12,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:12,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:12,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:12,414 INFO L87 Difference]: Start difference. First operand 13807 states and 16542 transitions. Second operand 7 states. [2020-10-28 12:08:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:16,644 INFO L93 Difference]: Finished difference Result 28629 states and 34579 transitions. [2020-10-28 12:08:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:08:16,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-28 12:08:16,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:16,689 INFO L225 Difference]: With dead ends: 28629 [2020-10-28 12:08:16,689 INFO L226 Difference]: Without dead ends: 13095 [2020-10-28 12:08:16,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:08:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13095 states. [2020-10-28 12:08:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13095 to 12639. [2020-10-28 12:08:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12639 states. [2020-10-28 12:08:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12639 states to 12639 states and 14827 transitions. [2020-10-28 12:08:16,998 INFO L78 Accepts]: Start accepts. Automaton has 12639 states and 14827 transitions. Word has length 357 [2020-10-28 12:08:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:16,999 INFO L481 AbstractCegarLoop]: Abstraction has 12639 states and 14827 transitions. [2020-10-28 12:08:16,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 12639 states and 14827 transitions. [2020-10-28 12:08:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-28 12:08:17,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:17,014 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:17,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:08:17,015 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:17,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:17,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1806026843, now seen corresponding path program 1 times [2020-10-28 12:08:17,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:17,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802223002] [2020-10-28 12:08:17,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:17,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:17,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:18,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-28 12:08:19,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:08:19,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2159 [2020-10-28 12:08:19,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:08:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:08:19,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:19,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:19,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:08:19,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:19,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:19,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:19,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:08:19,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:08:19,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:08:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:19,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:08:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:19,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:08:19,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 12:08:19,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:08:19,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:19,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-28 12:08:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:08:19,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:08:19,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 12:08:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 192 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-28 12:08:20,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802223002] [2020-10-28 12:08:20,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:20,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:20,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436630194] [2020-10-28 12:08:20,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:20,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:20,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:20,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:20,074 INFO L87 Difference]: Start difference. First operand 12639 states and 14827 transitions. Second operand 7 states. [2020-10-28 12:08:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:23,667 INFO L93 Difference]: Finished difference Result 27977 states and 33042 transitions. [2020-10-28 12:08:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:08:23,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-28 12:08:23,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:23,706 INFO L225 Difference]: With dead ends: 27977 [2020-10-28 12:08:23,706 INFO L226 Difference]: Without dead ends: 15720 [2020-10-28 12:08:23,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:08:23,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15720 states. [2020-10-28 12:08:24,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15720 to 14917. [2020-10-28 12:08:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14917 states. [2020-10-28 12:08:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14917 states to 14917 states and 17559 transitions. [2020-10-28 12:08:24,126 INFO L78 Accepts]: Start accepts. Automaton has 14917 states and 17559 transitions. Word has length 368 [2020-10-28 12:08:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:24,127 INFO L481 AbstractCegarLoop]: Abstraction has 14917 states and 17559 transitions. [2020-10-28 12:08:24,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 14917 states and 17559 transitions. [2020-10-28 12:08:24,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-28 12:08:24,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:24,138 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:24,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:08:24,138 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:24,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:24,139 INFO L82 PathProgramCache]: Analyzing trace with hash -405143493, now seen corresponding path program 1 times [2020-10-28 12:08:24,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:24,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085735004] [2020-10-28 12:08:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:24,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:25,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:26,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:26,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-28 12:08:26,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:08:26,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2765 [2020-10-28 12:08:26,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:26,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:08:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:08:26,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:27,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:27,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:27,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:27,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:08:27,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:27,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:27,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:27,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:27,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:27,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:08:27,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:27,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:08:27,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:27,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:08:27,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:27,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:08:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:27,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:27,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:08:27,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:27,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 12:08:27,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:27,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:08:27,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:27,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-28 12:08:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:27,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:27,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:08:27,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:27,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:08:27,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:27,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:27,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:27,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 12:08:27,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:27,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 196 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-28 12:08:27,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085735004] [2020-10-28 12:08:27,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:27,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:27,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408757625] [2020-10-28 12:08:27,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:27,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:27,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:27,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:27,730 INFO L87 Difference]: Start difference. First operand 14917 states and 17559 transitions. Second operand 7 states. [2020-10-28 12:08:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:32,236 INFO L93 Difference]: Finished difference Result 31556 states and 37229 transitions. [2020-10-28 12:08:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:08:32,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-28 12:08:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:32,279 INFO L225 Difference]: With dead ends: 31556 [2020-10-28 12:08:32,280 INFO L226 Difference]: Without dead ends: 17023 [2020-10-28 12:08:32,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:08:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17023 states. [2020-10-28 12:08:32,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17023 to 16429. [2020-10-28 12:08:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16429 states. [2020-10-28 12:08:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16429 states to 16429 states and 18836 transitions. [2020-10-28 12:08:32,602 INFO L78 Accepts]: Start accepts. Automaton has 16429 states and 18836 transitions. Word has length 374 [2020-10-28 12:08:32,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:32,603 INFO L481 AbstractCegarLoop]: Abstraction has 16429 states and 18836 transitions. [2020-10-28 12:08:32,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 16429 states and 18836 transitions. [2020-10-28 12:08:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-28 12:08:32,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:32,618 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:32,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:08:32,618 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:32,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:32,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1612651103, now seen corresponding path program 1 times [2020-10-28 12:08:32,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:32,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039897310] [2020-10-28 12:08:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:35,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:35,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-28 12:08:35,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:08:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3035 [2020-10-28 12:08:35,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:35,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:08:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 342 [2020-10-28 12:08:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 12:08:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:36,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:08:36,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:08:36,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:08:36,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:36,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:36,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:36,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:08:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:08:36,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:08:36,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:36,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:36,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:08:36,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-28 12:08:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:08:36,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:08:36,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:08:36,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:36,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:08:36,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 240 proven. 33 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-28 12:08:36,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039897310] [2020-10-28 12:08:36,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:36,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:08:36,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901607922] [2020-10-28 12:08:36,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:08:36,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:36,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:08:36,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:08:36,804 INFO L87 Difference]: Start difference. First operand 16429 states and 18836 transitions. Second operand 8 states. [2020-10-28 12:08:42,527 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-28 12:08:44,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:44,733 INFO L93 Difference]: Finished difference Result 35199 states and 40542 transitions. [2020-10-28 12:08:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 12:08:44,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 460 [2020-10-28 12:08:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:44,788 INFO L225 Difference]: With dead ends: 35199 [2020-10-28 12:08:44,788 INFO L226 Difference]: Without dead ends: 18774 [2020-10-28 12:08:44,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-28 12:08:44,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18774 states. [2020-10-28 12:08:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18774 to 18154. [2020-10-28 12:08:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18154 states. [2020-10-28 12:08:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18154 states to 18154 states and 20623 transitions. [2020-10-28 12:08:45,302 INFO L78 Accepts]: Start accepts. Automaton has 18154 states and 20623 transitions. Word has length 460 [2020-10-28 12:08:45,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:45,303 INFO L481 AbstractCegarLoop]: Abstraction has 18154 states and 20623 transitions. [2020-10-28 12:08:45,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:08:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 18154 states and 20623 transitions. [2020-10-28 12:08:45,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-28 12:08:45,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:45,323 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:45,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:08:45,323 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:45,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:45,324 INFO L82 PathProgramCache]: Analyzing trace with hash 241032597, now seen corresponding path program 1 times [2020-10-28 12:08:45,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:45,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726726341] [2020-10-28 12:08:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:45,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:45,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:45,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:50,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:50,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-28 12:08:50,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:08:50,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 12:08:50,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:50,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:50,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:08:50,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:08:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 12:08:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:50,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:50,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:50,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:50,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:50,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:08:50,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:50,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:50,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:50,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:50,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:50,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:50,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:50,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:08:50,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:08:50,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:50,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:50,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:08:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:50,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:50,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:08:50,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 12:08:50,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:50,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:08:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:50,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:08:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:50,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:51,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:51,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:08:51,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:51,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 12:08:51,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:51,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:51,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:51,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:08:51,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-28 12:08:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:51,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:51,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:51,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:08:51,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:51,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 12:08:51,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:51,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:08:51,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 469 proven. 86 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-28 12:08:51,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726726341] [2020-10-28 12:08:51,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:51,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:08:51,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35797115] [2020-10-28 12:08:51,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:08:51,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:51,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:08:51,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:08:51,794 INFO L87 Difference]: Start difference. First operand 18154 states and 20623 transitions. Second operand 8 states. [2020-10-28 12:08:52,659 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-28 12:08:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:56,940 INFO L93 Difference]: Finished difference Result 39788 states and 45273 transitions. [2020-10-28 12:08:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:08:56,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 486 [2020-10-28 12:08:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:56,989 INFO L225 Difference]: With dead ends: 39788 [2020-10-28 12:08:56,990 INFO L226 Difference]: Without dead ends: 21446 [2020-10-28 12:08:57,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:08:57,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21446 states. [2020-10-28 12:08:57,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21446 to 18152. [2020-10-28 12:08:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18152 states. [2020-10-28 12:08:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18152 states to 18152 states and 20514 transitions. [2020-10-28 12:08:57,307 INFO L78 Accepts]: Start accepts. Automaton has 18152 states and 20514 transitions. Word has length 486 [2020-10-28 12:08:57,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:57,307 INFO L481 AbstractCegarLoop]: Abstraction has 18152 states and 20514 transitions. [2020-10-28 12:08:57,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:08:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 18152 states and 20514 transitions. [2020-10-28 12:08:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-28 12:08:57,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:57,322 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:57,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:08:57,322 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:57,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:57,323 INFO L82 PathProgramCache]: Analyzing trace with hash -842888584, now seen corresponding path program 1 times [2020-10-28 12:08:57,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:57,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426410731] [2020-10-28 12:08:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:57,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:02,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:02,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-28 12:09:02,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:09:02,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 12:09:02,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:02,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:09:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:09:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-28 12:09:02,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:02,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:02,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:02,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:02,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:02,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:02,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:09:02,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:02,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:02,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:02,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:02,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:02,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:09:02,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:09:02,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:02,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:09:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:02,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:09:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:02,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:03,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:03,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 12:09:03,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:09:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-28 12:09:03,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:03,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 12:09:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:03,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:09:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:03,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:03,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:09:03,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:03,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 12:09:03,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:03,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:03,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:03,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:03,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:09:03,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:03,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-28 12:09:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:03,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:03,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:09:03,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:03,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:09:03,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:03,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:03,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:03,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 12:09:03,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:03,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 288 proven. 90 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-28 12:09:03,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426410731] [2020-10-28 12:09:03,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:03,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:03,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703139413] [2020-10-28 12:09:03,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:03,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:03,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:03,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:03,633 INFO L87 Difference]: Start difference. First operand 18152 states and 20514 transitions. Second operand 7 states. [2020-10-28 12:09:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:07,622 INFO L93 Difference]: Finished difference Result 37257 states and 42571 transitions. [2020-10-28 12:09:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:09:07,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 486 [2020-10-28 12:09:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:07,659 INFO L225 Difference]: With dead ends: 37257 [2020-10-28 12:09:07,660 INFO L226 Difference]: Without dead ends: 17920 [2020-10-28 12:09:07,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17920 states. [2020-10-28 12:09:07,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17920 to 17152. [2020-10-28 12:09:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17152 states. [2020-10-28 12:09:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17152 states to 17152 states and 19016 transitions. [2020-10-28 12:09:07,972 INFO L78 Accepts]: Start accepts. Automaton has 17152 states and 19016 transitions. Word has length 486 [2020-10-28 12:09:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:07,973 INFO L481 AbstractCegarLoop]: Abstraction has 17152 states and 19016 transitions. [2020-10-28 12:09:07,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 17152 states and 19016 transitions. [2020-10-28 12:09:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-28 12:09:07,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:07,988 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:07,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:09:07,988 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:07,989 INFO L82 PathProgramCache]: Analyzing trace with hash 45413115, now seen corresponding path program 1 times [2020-10-28 12:09:07,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:07,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690806955] [2020-10-28 12:09:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:08,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:10,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:11,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:11,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:11,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:12,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:12,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-28 12:09:12,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:09:12,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4458 [2020-10-28 12:09:12,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:12,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:09:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:09:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:12,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:12,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:12,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:12,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:09:12,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:12,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:12,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:12,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:12,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:12,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:12,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:12,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:12,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:09:12,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:09:12,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:12,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:12,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:09:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:12,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:12,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:09:12,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:09:12,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:12,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:09:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:09:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:13,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:13,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:13,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:09:13,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:13,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:09:13,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:13,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:09:13,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:13,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-28 12:09:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:13,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:13,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:13,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:09:13,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:13,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:09:13,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:13,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 12:09:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:13,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 333 proven. 93 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2020-10-28 12:09:13,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690806955] [2020-10-28 12:09:13,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:13,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:13,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556231603] [2020-10-28 12:09:13,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:13,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:13,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:13,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:13,355 INFO L87 Difference]: Start difference. First operand 17152 states and 19016 transitions. Second operand 7 states. [2020-10-28 12:09:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:17,073 INFO L93 Difference]: Finished difference Result 34903 states and 38679 transitions. [2020-10-28 12:09:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:09:17,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-28 12:09:17,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:17,104 INFO L225 Difference]: With dead ends: 34903 [2020-10-28 12:09:17,104 INFO L226 Difference]: Without dead ends: 17947 [2020-10-28 12:09:17,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:17,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17947 states. [2020-10-28 12:09:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17947 to 17148. [2020-10-28 12:09:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17148 states. [2020-10-28 12:09:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17148 states to 17148 states and 18842 transitions. [2020-10-28 12:09:17,406 INFO L78 Accepts]: Start accepts. Automaton has 17148 states and 18842 transitions. Word has length 506 [2020-10-28 12:09:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:17,407 INFO L481 AbstractCegarLoop]: Abstraction has 17148 states and 18842 transitions. [2020-10-28 12:09:17,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 17148 states and 18842 transitions. [2020-10-28 12:09:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-28 12:09:17,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:17,421 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:09:17,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:09:17,422 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:17,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:17,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1503500065, now seen corresponding path program 1 times [2020-10-28 12:09:17,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:17,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53194113] [2020-10-28 12:09:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:17,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:18,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:18,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:19,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:22,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:22,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-28 12:09:22,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:09:22,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 12:09:22,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:22,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 431 [2020-10-28 12:09:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:09:22,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:22,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:22,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:22,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:22,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:09:22,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:22,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:22,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:22,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:22,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:09:22,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:09:22,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:22,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:22,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:09:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:22,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:22,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:09:22,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 12:09:22,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:22,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:22,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-28 12:09:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:23,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:23,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:09:23,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:23,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:09:23,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:23,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:09:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:23,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:09:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:23,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:23,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:23,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:09:23,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:23,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 12:09:23,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:23,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:09:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 388 proven. 2 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-28 12:09:23,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53194113] [2020-10-28 12:09:23,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:23,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:23,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514458054] [2020-10-28 12:09:23,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:23,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:23,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:23,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:23,575 INFO L87 Difference]: Start difference. First operand 17148 states and 18842 transitions. Second operand 7 states. [2020-10-28 12:09:26,484 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 12:09:26,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:26,891 INFO L93 Difference]: Finished difference Result 34520 states and 37909 transitions. [2020-10-28 12:09:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:09:26,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 547 [2020-10-28 12:09:26,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:26,922 INFO L225 Difference]: With dead ends: 34520 [2020-10-28 12:09:26,922 INFO L226 Difference]: Without dead ends: 17568 [2020-10-28 12:09:26,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:09:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17568 states. [2020-10-28 12:09:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17568 to 14847. [2020-10-28 12:09:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14847 states. [2020-10-28 12:09:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14847 states to 14847 states and 16208 transitions. [2020-10-28 12:09:27,156 INFO L78 Accepts]: Start accepts. Automaton has 14847 states and 16208 transitions. Word has length 547 [2020-10-28 12:09:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:27,157 INFO L481 AbstractCegarLoop]: Abstraction has 14847 states and 16208 transitions. [2020-10-28 12:09:27,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 14847 states and 16208 transitions. [2020-10-28 12:09:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2020-10-28 12:09:27,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:27,173 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:27,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 12:09:27,173 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:27,173 INFO L82 PathProgramCache]: Analyzing trace with hash -550126888, now seen corresponding path program 1 times [2020-10-28 12:09:27,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:27,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502009769] [2020-10-28 12:09:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:27,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:27,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:28,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:32,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:32,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 710 [2020-10-28 12:09:32,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:09:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 12:09:32,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:32,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-28 12:09:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:09:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:32,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:32,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:32,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:32,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:32,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:09:32,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:32,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:32,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:32,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:32,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:09:32,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:09:32,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:32,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:32,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:32,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:09:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:32,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:32,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:09:32,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:32,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:09:32,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:32,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:32,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:32,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:32,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:09:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:32,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:32,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:09:32,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:32,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:09:32,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:32,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:32,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:32,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:09:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:32,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:32,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:32,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:09:32,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:09:32,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:32,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:32,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:32,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-28 12:09:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:32,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:32,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:09:32,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:32,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:09:32,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:32,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 12:09:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:33,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2020-10-28 12:09:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:33,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:33,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:33,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:09:33,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:09:33,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:33,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:09:33,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 635 proven. 2 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2020-10-28 12:09:33,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502009769] [2020-10-28 12:09:33,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:33,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:33,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627704396] [2020-10-28 12:09:33,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:33,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:33,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:33,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:33,469 INFO L87 Difference]: Start difference. First operand 14847 states and 16208 transitions. Second operand 7 states. [2020-10-28 12:09:36,124 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-28 12:09:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:37,719 INFO L93 Difference]: Finished difference Result 29726 states and 32465 transitions. [2020-10-28 12:09:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:09:37,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 688 [2020-10-28 12:09:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:37,744 INFO L225 Difference]: With dead ends: 29726 [2020-10-28 12:09:37,744 INFO L226 Difference]: Without dead ends: 15075 [2020-10-28 12:09:37,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:37,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15075 states. [2020-10-28 12:09:37,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15075 to 15039. [2020-10-28 12:09:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15039 states. [2020-10-28 12:09:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15039 states to 15039 states and 16368 transitions. [2020-10-28 12:09:37,992 INFO L78 Accepts]: Start accepts. Automaton has 15039 states and 16368 transitions. Word has length 688 [2020-10-28 12:09:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:37,993 INFO L481 AbstractCegarLoop]: Abstraction has 15039 states and 16368 transitions. [2020-10-28 12:09:37,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 15039 states and 16368 transitions. [2020-10-28 12:09:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2020-10-28 12:09:38,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:38,014 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:38,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 12:09:38,015 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:38,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:38,016 INFO L82 PathProgramCache]: Analyzing trace with hash -553829014, now seen corresponding path program 1 times [2020-10-28 12:09:38,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:38,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380209241] [2020-10-28 12:09:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:38,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:38,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:43,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 726 [2020-10-28 12:09:43,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:09:43,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 12:09:43,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:43,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 592 [2020-10-28 12:09:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:09:43,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:43,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:43,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:43,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:09:43,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:43,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:43,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:43,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:43,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:43,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:43,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:09:43,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:09:43,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:43,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:43,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:43,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:09:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:43,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:09:43,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:09:43,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:43,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:43,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:09:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:43,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:09:43,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:09:43,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:43,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:09:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:43,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:43,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:09:43,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:43,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:09:43,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:43,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:43,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:43,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:43,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-28 12:09:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:43,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 12:09:43,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:43,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:09:43,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:43,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:09:43,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:43,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-10-28 12:09:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:43,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:43,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:09:43,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 12:09:43,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:43,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:09:43,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1646 backedges. 635 proven. 2 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2020-10-28 12:09:44,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380209241] [2020-10-28 12:09:44,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:44,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:44,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942095269] [2020-10-28 12:09:44,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:44,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:44,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:44,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:44,548 INFO L87 Difference]: Start difference. First operand 15039 states and 16368 transitions. Second operand 7 states.