/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=DEEPEST --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/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:34:37,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:34:37,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:34:37,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:34:37,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:34:37,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:34:37,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:34:37,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:34:37,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:34:37,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:34:37,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:34:37,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:34:37,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:34:37,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:34:37,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:34:37,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:34:37,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:34:37,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:34:37,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:34:37,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:34:37,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:34:37,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:34:37,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:34:37,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:34:37,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:34:37,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:34:37,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:34:37,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:34:37,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:34:37,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:34:37,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:34:37,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:34:37,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:34:37,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:34:37,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:34:37,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:34:37,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:34:37,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:34:37,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:34:37,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:34:37,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:34:37,199 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 [2020-10-27 22:34:37,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:34:37,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:34:37,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:34:37,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:34:37,264 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:34:37,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:34:37,264 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:34:37,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:34:37,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:34:37,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:34:37,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:34:37,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:34:37,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:34:37,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:34:37,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:34:37,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:34:37,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:34:37,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:34:37,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:34:37,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:34:37,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:34:37,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:34:37,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:34:37,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:34:37,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:34:37,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:34:37,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:34:37,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:34:37,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:34:37,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:34:37,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:34:37,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:34:37,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:34:37,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:34:37,812 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:34:37,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-10-27 22:34:37,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fa338cd9/aec948aa5e4046cfafa6027806f13083/FLAGa9870fd69 [2020-10-27 22:34:38,578 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:34:38,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-10-27 22:34:38,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fa338cd9/aec948aa5e4046cfafa6027806f13083/FLAGa9870fd69 [2020-10-27 22:34:38,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fa338cd9/aec948aa5e4046cfafa6027806f13083 [2020-10-27 22:34:38,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:34:38,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:34:38,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:34:38,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:34:38,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:34:38,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:34:38" (1/1) ... [2020-10-27 22:34:39,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da8912c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:38, skipping insertion in model container [2020-10-27 22:34:39,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:34:38" (1/1) ... [2020-10-27 22:34:39,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:34:39,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:34:39,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:34:39,242 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:34:39,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:34:39,279 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:34:39,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:39 WrapperNode [2020-10-27 22:34:39,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:34:39,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:34:39,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:34:39,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:34:39,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:39" (1/1) ... [2020-10-27 22:34:39,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:39" (1/1) ... [2020-10-27 22:34:39,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:39" (1/1) ... [2020-10-27 22:34:39,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:39" (1/1) ... [2020-10-27 22:34:39,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:39" (1/1) ... [2020-10-27 22:34:39,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:39" (1/1) ... [2020-10-27 22:34:39,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:39" (1/1) ... [2020-10-27 22:34:39,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:34:39,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:34:39,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:34:39,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:34:39,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:39" (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 [2020-10-27 22:34:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:34:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:34:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:34:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-10-27 22:34:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-10-27 22:34:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:34:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:34:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:34:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:34:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:34:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:34:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-10-27 22:34:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-10-27 22:34:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:34:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:34:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:34:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:34:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:34:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:34:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:34:39,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:34:39,677 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 22:34:39,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:34:39 BoogieIcfgContainer [2020-10-27 22:34:39,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:34:39,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:34:39,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:34:39,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:34:39,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:34:38" (1/3) ... [2020-10-27 22:34:39,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639e9759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:34:39, skipping insertion in model container [2020-10-27 22:34:39,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:34:39" (2/3) ... [2020-10-27 22:34:39,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639e9759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:34:39, skipping insertion in model container [2020-10-27 22:34:39,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:34:39" (3/3) ... [2020-10-27 22:34:39,692 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-10-27 22:34:39,762 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:34:39,775 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:34:39,823 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:34:39,880 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:34:39,880 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:34:39,880 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:34:39,880 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:34:39,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:34:39,881 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:34:39,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:34:39,881 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:34:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-27 22:34:39,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 22:34:39,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:34:39,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:34:39,909 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:34:39,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:34:39,917 INFO L82 PathProgramCache]: Analyzing trace with hash 219823047, now seen corresponding path program 1 times [2020-10-27 22:34:39,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:34:39,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936792705] [2020-10-27 22:34:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:34:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:40,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:40,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:34:40,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:34:40,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-27 22:34:40,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:34:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:34:40,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:34:40,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 25 [2020-10-27 22:34:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:34:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:40,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:40,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:40,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:34:40,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:40,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:34:40,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:34:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:34:40,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:34:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:40,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:40,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:40,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:34:40,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:34:40,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:34:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:34:40,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:34:41,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936792705] [2020-10-27 22:34:41,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:34:41,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:34:41,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971958728] [2020-10-27 22:34:41,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:34:41,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:34:41,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:34:41,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:34:41,034 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-10-27 22:34:41,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:34:41,353 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-10-27 22:34:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:34:41,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-27 22:34:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:34:41,365 INFO L225 Difference]: With dead ends: 53 [2020-10-27 22:34:41,365 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 22:34:41,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:34:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 22:34:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-27 22:34:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 22:34:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-27 22:34:41,424 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 15 [2020-10-27 22:34:41,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:34:41,425 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-27 22:34:41,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:34:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-27 22:34:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 22:34:41,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:34:41,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:34:41,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:34:41,428 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:34:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:34:41,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1220716726, now seen corresponding path program 1 times [2020-10-27 22:34:41,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:34:41,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891962096] [2020-10-27 22:34:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:34:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:41,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:41,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:41,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:34:41,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:34:41,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 22:34:41,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:34:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:34:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:34:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:41,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:34:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:41,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:41,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:41,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:34:41,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:41,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:34:41,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:41,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:34:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:34:41,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:41,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:34:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:41,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:41,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:34:41,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:34:41,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:34:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:34:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:34:41,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891962096] [2020-10-27 22:34:41,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:34:41,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:34:41,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582005283] [2020-10-27 22:34:41,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:34:41,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:34:41,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:34:41,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:34:41,739 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 6 states. [2020-10-27 22:34:41,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:34:41,987 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-10-27 22:34:41,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:34:41,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-27 22:34:41,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:34:41,989 INFO L225 Difference]: With dead ends: 39 [2020-10-27 22:34:41,989 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 22:34:41,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:34:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 22:34:42,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-27 22:34:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 22:34:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-27 22:34:42,002 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 16 [2020-10-27 22:34:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:34:42,002 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-27 22:34:42,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:34:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-27 22:34:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 22:34:42,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:34:42,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:34:42,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:34:42,005 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:34:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:34:42,006 INFO L82 PathProgramCache]: Analyzing trace with hash 2083135015, now seen corresponding path program 1 times [2020-10-27 22:34:42,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:34:42,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673641291] [2020-10-27 22:34:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:34:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:42,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:44,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:44,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:34:44,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:34:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2336 [2020-10-27 22:34:44,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:34:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:34:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:34:44,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:44,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:34:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:44,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:44,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:34:44,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:34:44,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:34:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:34:44,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:44,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:34:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:44,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:44,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:44,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:44,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:34:44,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:34:44,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 22:34:44,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:44,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:34:44,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:34:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:34:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:34:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:44,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:44,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:34:44,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:44,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:34:44,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:34:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:34:44,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:34:44,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:44,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:34:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:44,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:44,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:34:44,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:34:44,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:34:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:34:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:34:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 22:34:44,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673641291] [2020-10-27 22:34:44,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:34:44,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:34:44,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820614093] [2020-10-27 22:34:44,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:34:44,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:34:44,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:34:44,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:34:44,628 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 9 states. [2020-10-27 22:34:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:34:44,972 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions. [2020-10-27 22:34:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:34:44,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-27 22:34:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:34:44,975 INFO L225 Difference]: With dead ends: 61 [2020-10-27 22:34:44,975 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 22:34:44,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:34:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 22:34:44,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 22:34:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 22:34:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-27 22:34:44,986 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 28 [2020-10-27 22:34:44,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:34:44,986 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-27 22:34:44,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:34:44,987 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-27 22:34:44,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 22:34:44,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:34:44,991 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 22:34:44,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:34:44,991 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:34:44,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:34:44,992 INFO L82 PathProgramCache]: Analyzing trace with hash 752879968, now seen corresponding path program 1 times [2020-10-27 22:34:44,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:34:44,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211266817] [2020-10-27 22:34:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:34:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:45,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:45,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:46,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:46,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 22:34:46,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:34:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1085 [2020-10-27 22:34:46,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:34:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:34:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:34:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:34:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:46,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:46,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:34:46,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:46,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:34:46,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:34:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:34:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:34:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:46,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:46,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:46,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:34:46,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 22:34:46,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:46,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:34:46,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:46,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:34:46,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:46,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:34:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:46,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:46,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:46,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:34:46,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:34:46,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:34:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:34:46,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:46,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:34:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:46,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:46,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:34:46,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:34:46,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:34:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:34:46,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:34:46,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211266817] [2020-10-27 22:34:46,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:34:46,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:34:46,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807991813] [2020-10-27 22:34:46,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:34:46,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:34:46,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:34:46,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:34:46,300 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 10 states. [2020-10-27 22:34:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:34:46,760 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-10-27 22:34:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:34:46,761 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-27 22:34:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:34:46,763 INFO L225 Difference]: With dead ends: 47 [2020-10-27 22:34:46,763 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 22:34:46,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:34:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 22:34:46,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-27 22:34:46,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 22:34:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-10-27 22:34:46,775 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 29 [2020-10-27 22:34:46,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:34:46,775 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-10-27 22:34:46,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:34:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-10-27 22:34:46,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 22:34:46,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:34:46,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:34:46,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:34:46,777 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:34:46,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:34:46,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1703344845, now seen corresponding path program 1 times [2020-10-27 22:34:46,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:34:46,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112008744] [2020-10-27 22:34:46,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:34:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:46,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:46,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:46,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:48,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:48,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 22:34:48,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:34:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1723 [2020-10-27 22:34:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:34:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:34:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 22:34:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:48,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:34:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:48,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:48,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:34:48,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:48,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:34:48,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:34:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:34:48,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:48,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:34:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:48,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:48,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:48,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:34:48,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:34:48,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-27 22:34:48,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:48,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:34:48,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:34:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:34:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:48,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:34:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:48,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:48,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:34:48,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:48,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:34:48,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:34:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:34:48,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:48,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:34:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:48,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:48,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:34:48,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:34:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:34:48,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:34:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:34:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:34:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 22:34:48,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112008744] [2020-10-27 22:34:48,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:34:48,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 22:34:48,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53099413] [2020-10-27 22:34:48,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:34:48,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:34:48,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:34:48,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:34:48,885 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 10 states. [2020-10-27 22:34:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:34:49,343 INFO L93 Difference]: Finished difference Result 74 states and 102 transitions. [2020-10-27 22:34:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:34:49,344 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-27 22:34:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:34:49,345 INFO L225 Difference]: With dead ends: 74 [2020-10-27 22:34:49,345 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 22:34:49,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:34:49,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 22:34:49,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-27 22:34:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 22:34:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-10-27 22:34:49,356 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 30 [2020-10-27 22:34:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:34:49,357 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-27 22:34:49,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:34:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-10-27 22:34:49,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 22:34:49,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:34:49,359 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-27 22:34:49,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:34:49,359 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:34:49,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:34:49,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2070859795, now seen corresponding path program 1 times [2020-10-27 22:34:49,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:34:49,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573258701] [2020-10-27 22:34:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:34:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:49,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:49,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:50,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:54,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:54,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 22:34:54,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:34:54,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 22:34:54,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:34:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:34:54,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 22:34:54,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:34:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:54,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:54,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:54,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:34:54,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:34:54,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:34:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:34:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:34:54,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:54,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:34:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:54,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:54,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:54,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:55,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:55,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 22:34:55,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:34:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-27 22:34:55,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:34:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 22:34:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:34:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:55,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:34:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:55,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:55,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:55,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:34:55,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:34:55,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:34:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:34:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:34:55,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:55,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:34:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:55,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:55,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:34:55,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:34:55,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:34:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:34:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:34:55,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:34:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:55,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:55,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:34:55,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:55,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:34:55,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:34:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:34:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:34:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:55,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 22:34:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:55,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:34:55,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:34:55,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:34:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:34:55,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:34:55,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:34:55,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:34:55,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:34:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:34:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 22:34:55,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573258701] [2020-10-27 22:34:55,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:34:55,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:34:55,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104344495] [2020-10-27 22:34:55,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:34:55,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:34:55,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:34:55,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:34:55,481 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 9 states. [2020-10-27 22:34:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:34:55,802 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2020-10-27 22:34:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:34:55,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-27 22:34:55,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:34:55,806 INFO L225 Difference]: With dead ends: 77 [2020-10-27 22:34:55,806 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 22:34:55,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:34:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 22:34:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-27 22:34:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 22:34:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-10-27 22:34:55,823 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 41 [2020-10-27 22:34:55,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:34:55,825 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-10-27 22:34:55,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:34:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-10-27 22:34:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 22:34:55,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:34:55,828 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-27 22:34:55,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:34:55,831 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:34:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:34:55,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1960607334, now seen corresponding path program 1 times [2020-10-27 22:34:55,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:34:55,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223712711] [2020-10-27 22:34:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:34:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:34:55,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:55,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:55,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:55,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:56,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:34:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:00,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:00,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 22:35:00,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:35:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:35:00,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:35:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 22:35:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 22:35:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:35:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:35:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:00,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:00,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:35:00,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:00,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:00,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:00,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:35:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:00,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:01,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:01,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:01,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 22:35:01,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:35:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-10-27 22:35:01,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:35:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:35:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:35:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:01,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:01,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:01,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:01,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:35:01,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:35:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 22:35:01,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:35:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:35:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:01,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:01,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:01,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:01,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:01,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:35:01,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:01,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:35:01,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:01,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:35:01,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:01,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:01,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:01,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:01,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:01,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:01,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:35:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:35:01,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:35:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:01,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:01,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:01,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:01,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:35:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:35:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:35:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 22:35:02,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223712711] [2020-10-27 22:35:02,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:35:02,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:35:02,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343940415] [2020-10-27 22:35:02,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:35:02,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:35:02,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:35:02,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:35:02,012 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 11 states. [2020-10-27 22:35:02,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:35:02,587 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2020-10-27 22:35:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:35:02,588 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-27 22:35:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:35:02,590 INFO L225 Difference]: With dead ends: 79 [2020-10-27 22:35:02,591 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 22:35:02,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:35:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 22:35:02,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-27 22:35:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 22:35:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-10-27 22:35:02,601 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 42 [2020-10-27 22:35:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:35:02,601 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-10-27 22:35:02,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:35:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-10-27 22:35:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 22:35:02,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:35:02,603 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:35:02,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:35:02,603 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:35:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:35:02,604 INFO L82 PathProgramCache]: Analyzing trace with hash 488187527, now seen corresponding path program 1 times [2020-10-27 22:35:02,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:35:02,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715355070] [2020-10-27 22:35:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:35:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:02,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:05,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:05,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 22:35:05,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:35:05,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2642 [2020-10-27 22:35:05,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:35:05,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 22:35:05,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:35:05,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:05,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:35:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:05,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:05,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:05,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:35:05,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:05,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:05,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:05,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:35:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:05,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:05,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:35:05,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:05,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 22:35:05,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:05,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:35:05,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:05,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:35:05,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:05,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:05,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:35:05,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:35:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:35:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:35:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:05,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:05,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:05,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:05,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:05,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:05,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:35:05,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:35:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:35:05,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:05,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:05,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:05,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:05,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:35:05,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:35:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:35:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:35:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:05,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:05,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:05,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:35:05,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:35:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:35:05,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 22:35:05,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715355070] [2020-10-27 22:35:05,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:35:05,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:35:05,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783317740] [2020-10-27 22:35:05,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:35:05,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:35:05,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:35:05,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:35:05,546 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 13 states. [2020-10-27 22:35:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:35:06,290 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-10-27 22:35:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:35:06,291 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-27 22:35:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:35:06,293 INFO L225 Difference]: With dead ends: 62 [2020-10-27 22:35:06,293 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 22:35:06,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2020-10-27 22:35:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 22:35:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-10-27 22:35:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 22:35:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2020-10-27 22:35:06,306 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 43 [2020-10-27 22:35:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:35:06,306 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2020-10-27 22:35:06,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:35:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2020-10-27 22:35:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 22:35:06,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:35:06,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:35:06,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:35:06,309 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:35:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:35:06,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1996320528, now seen corresponding path program 1 times [2020-10-27 22:35:06,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:35:06,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552652770] [2020-10-27 22:35:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:35:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:06,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:08,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:35:08,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:35:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1835 [2020-10-27 22:35:08,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:35:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:35:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:35:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:08,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:35:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:08,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:35:08,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:35:08,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:08,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:35:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:08,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:08,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:35:08,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:35:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-27 22:35:08,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:35:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 22:35:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:35:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:08,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:08,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:35:08,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:35:08,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 22:35:08,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:08,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:35:08,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:35:08,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:35:08,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:08,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:08,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:08,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:35:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:35:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:08,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:08,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:08,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:35:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:35:08,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:35:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:35:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:35:08,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:35:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:08,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:08,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:08,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:08,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:08,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:35:08,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:35:08,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:08,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 22:35:08,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552652770] [2020-10-27 22:35:08,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:35:08,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 22:35:08,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007134734] [2020-10-27 22:35:08,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:35:08,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:35:08,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:35:08,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:35:08,665 INFO L87 Difference]: Start difference. First operand 52 states and 69 transitions. Second operand 8 states. [2020-10-27 22:35:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:35:09,063 INFO L93 Difference]: Finished difference Result 100 states and 141 transitions. [2020-10-27 22:35:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:35:09,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-27 22:35:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:35:09,068 INFO L225 Difference]: With dead ends: 100 [2020-10-27 22:35:09,068 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 22:35:09,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:35:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 22:35:09,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-27 22:35:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 22:35:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-10-27 22:35:09,080 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 44 [2020-10-27 22:35:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:35:09,080 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-10-27 22:35:09,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:35:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-10-27 22:35:09,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 22:35:09,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:35:09,084 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:35:09,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:35:09,084 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:35:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:35:09,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1609471852, now seen corresponding path program 1 times [2020-10-27 22:35:09,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:35:09,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801755498] [2020-10-27 22:35:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:35:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:09,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:09,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:09,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:09,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:09,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:09,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:09,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:10,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:10,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:11,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:14,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 22:35:14,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 22:35:14,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 22:35:14,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:35:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 22:35:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 22:35:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:35:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:35:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:14,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:14,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:35:14,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:14,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:35:14,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:14,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:14,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:35:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:14,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:17,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:18,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:18,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:19,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 22:35:19,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-27 22:35:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:35:19,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:35:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 22:35:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 22:35:19,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:19,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:19,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:19,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:35:19,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:19,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:19,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:19,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:19,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:19,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:19,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:19,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:19,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:35:19,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:19,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:19,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:19,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:19,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:35:19,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:19,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:35:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:19,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:19,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:21,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:35:21,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:35:21,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2024 [2020-10-27 22:35:21,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:35:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:35:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 22:35:21,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:21,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:21,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:35:21,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:35:21,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 22:35:21,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:35:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:35:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:21,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:21,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:21,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:21,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:35:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:35:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:21,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:21,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:21,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:21,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:35:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:35:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:21,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:35:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:21,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:21,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:35:21,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:35:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 22:35:21,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:35:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:35:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:35:21,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:35:21,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:21,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:21,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:35:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:35:21,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:35:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:35:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:21,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:21,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:21,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:21,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:21,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:21,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:35:21,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:21,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:35:21,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:35:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-27 22:35:21,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801755498] [2020-10-27 22:35:21,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:35:21,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:35:21,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2398292] [2020-10-27 22:35:21,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:35:21,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:35:21,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:35:21,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:35:21,566 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 12 states. [2020-10-27 22:35:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:35:22,551 INFO L93 Difference]: Finished difference Result 125 states and 183 transitions. [2020-10-27 22:35:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:35:22,554 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-10-27 22:35:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:35:22,557 INFO L225 Difference]: With dead ends: 125 [2020-10-27 22:35:22,557 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 22:35:22,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:35:22,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 22:35:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2020-10-27 22:35:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 22:35:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-10-27 22:35:22,589 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 83 [2020-10-27 22:35:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:35:22,589 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-10-27 22:35:22,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:35:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-10-27 22:35:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 22:35:22,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:35:22,592 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:35:22,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:35:22,597 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:35:22,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:35:22,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1951834989, now seen corresponding path program 2 times [2020-10-27 22:35:22,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:35:22,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681651737] [2020-10-27 22:35:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:35:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:22,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:22,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:27,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:27,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 22:35:27,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:35:27,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:35:27,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:35:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:35:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 22:35:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:35:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:27,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:27,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:35:27,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:27,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:35:27,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:27,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:35:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:27,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:27,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:27,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:27,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:27,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:27,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:28,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:28,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:28,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:32,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:32,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:35:32,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 22:35:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:35:32,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:35:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 22:35:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:35:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:32,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:32,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:32,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:35:32,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:32,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:32,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:32,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:32,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:35:32,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:32,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:32,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:32,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:32,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:35:32,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:32,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:32,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:32,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:32,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:32,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:32,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:35:32,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:32,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:32,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:35:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:32,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:32,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:32,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 22:35:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:35:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 22:35:32,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:35:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:35:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:35:32,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:32,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:33,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:33,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:35:33,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:35:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 22:35:33,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:35:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:35:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:33,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:33,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:33,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:33,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:35:33,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:35:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:35:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:33,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:33,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:33,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:35:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:35:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:35:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:35:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:33,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:33,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:33,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:33,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:33,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:35:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:35:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:35:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-27 22:35:33,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681651737] [2020-10-27 22:35:33,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:35:33,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:35:33,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797783954] [2020-10-27 22:35:33,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:35:33,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:35:33,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:35:33,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:35:33,199 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 9 states. [2020-10-27 22:35:33,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:35:33,663 INFO L93 Difference]: Finished difference Result 117 states and 158 transitions. [2020-10-27 22:35:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:35:33,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-27 22:35:33,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:35:33,667 INFO L225 Difference]: With dead ends: 117 [2020-10-27 22:35:33,667 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 22:35:33,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:35:33,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 22:35:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-27 22:35:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 22:35:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2020-10-27 22:35:33,679 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 69 [2020-10-27 22:35:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:35:33,679 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2020-10-27 22:35:33,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:35:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2020-10-27 22:35:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:35:33,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:35:33,681 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:35:33,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:35:33,682 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:35:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:35:33,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1077697206, now seen corresponding path program 3 times [2020-10-27 22:35:33,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:35:33,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275420759] [2020-10-27 22:35:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:35:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:33,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:33,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:33,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:34,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:35,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:38,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:38,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 22:35:38,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 22:35:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:35:38,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:35:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:35:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 22:35:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:38,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:35:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:38,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:38,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:35:38,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:38,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:35:38,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:38,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:35:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:38,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:38,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:38,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:39,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:39,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:43,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:43,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 22:35:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 22:35:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:35:43,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:35:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:35:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:35:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:43,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:43,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:43,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:35:43,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:35:43,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 22:35:43,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:43,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:35:43,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:43,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:35:43,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:43,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:43,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:43,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:43,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:43,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:35:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:35:43,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:43,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:43,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:43,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:43,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:43,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:43,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:43,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:35:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:35:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:43,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:35:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:43,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:43,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:43,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:43,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:44,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:44,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:35:44,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:35:44,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-27 22:35:44,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:44,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:35:44,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:35:44,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:35:44,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:44,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:44,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:44,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:35:44,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:44,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:35:44,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:44,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:35:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:35:44,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:44,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:44,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:44,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:44,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:44,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:35:44,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:44,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:44,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:44,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:44,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:44,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 22:35:44,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:44,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:44,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:44,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:44,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:44,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:35:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:44,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:44,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:44,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:35:44,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:35:44,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:35:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:35:44,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 22:35:44,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275420759] [2020-10-27 22:35:44,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:35:44,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:35:44,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293734458] [2020-10-27 22:35:44,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:35:44,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:35:44,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:35:44,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:35:44,502 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand 12 states. [2020-10-27 22:35:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:35:45,245 INFO L93 Difference]: Finished difference Result 133 states and 184 transitions. [2020-10-27 22:35:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:35:45,248 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-27 22:35:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:35:45,251 INFO L225 Difference]: With dead ends: 133 [2020-10-27 22:35:45,251 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 22:35:45,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:35:45,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 22:35:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-10-27 22:35:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 22:35:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-10-27 22:35:45,277 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 70 [2020-10-27 22:35:45,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:35:45,277 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-10-27 22:35:45,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:35:45,278 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-10-27 22:35:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 22:35:45,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:35:45,279 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:35:45,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:35:45,280 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:35:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:35:45,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2073039210, now seen corresponding path program 1 times [2020-10-27 22:35:45,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:35:45,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146184564] [2020-10-27 22:35:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:35:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:45,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:45,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:45,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:45,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:48,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:48,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:35:48,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:35:48,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3065 [2020-10-27 22:35:48,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:48,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:35:48,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:35:48,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 22:35:48,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:35:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:48,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:48,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:35:48,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:48,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:35:48,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:48,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:48,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:35:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:48,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:48,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 22:35:48,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:35:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-27 22:35:48,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:35:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:35:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 22:35:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:48,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:49,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:49,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:49,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:49,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:35:49,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:35:49,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-27 22:35:49,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:49,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:35:49,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 22:35:49,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:49,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:49,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:49,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:35:49,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:35:49,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:35:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:35:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:49,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:35:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:49,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:49,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:49,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:49,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:35:49,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:49,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:49,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:35:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:49,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:49,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:49,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:35:49,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:49,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 22:35:49,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:49,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:49,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:35:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:49,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:49,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:49,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:49,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:35:49,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:35:49,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:35:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:35:49,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 22:35:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:49,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:49,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:35:49,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:49,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:35:49,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:49,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:35:49,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:35:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:35:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 22:35:49,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146184564] [2020-10-27 22:35:49,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:35:49,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 22:35:49,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612646267] [2020-10-27 22:35:49,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:35:49,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:35:49,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:35:49,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:35:49,713 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 10 states. [2020-10-27 22:35:50,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:35:50,273 INFO L93 Difference]: Finished difference Result 135 states and 189 transitions. [2020-10-27 22:35:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:35:50,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-27 22:35:50,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:35:50,275 INFO L225 Difference]: With dead ends: 135 [2020-10-27 22:35:50,275 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 22:35:50,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:35:50,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 22:35:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-27 22:35:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 22:35:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2020-10-27 22:35:50,301 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 105 transitions. Word has length 57 [2020-10-27 22:35:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:35:50,302 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 105 transitions. [2020-10-27 22:35:50,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:35:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 105 transitions. [2020-10-27 22:35:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 22:35:50,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:35:50,306 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 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] [2020-10-27 22:35:50,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:35:50,306 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:35:50,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:35:50,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1562902855, now seen corresponding path program 2 times [2020-10-27 22:35:50,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:35:50,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361849862] [2020-10-27 22:35:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:35:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:50,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:50,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:50,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:53,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:53,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:54,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:55,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 22:35:55,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 22:35:55,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:35:55,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:35:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:35:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 22:35:55,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:35:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:55,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:35:55,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:35:55,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:35:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:35:55,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:35:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:35:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:35:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:35:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:35:55,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:35:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:35:55,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:55,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:35:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:00,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 22:36:00,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 22:36:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:36:00,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:36:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:36:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:36:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:00,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:00,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:36:00,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:36:00,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 22:36:00,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:36:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 22:36:00,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:00,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:00,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:00,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:36:00,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:36:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 22:36:00,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:36:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:36:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:00,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:00,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:00,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:00,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:36:00,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:36:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:36:00,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:00,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:36:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:00,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:00,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:36:00,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:36:00,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:36:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:36:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:00,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:36:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:00,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:00,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:00,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:36:00,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:36:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:36:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:00,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 22:36:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:01,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:01,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:36:01,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:36:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-27 22:36:01,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:36:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:36:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:36:01,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:01,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:01,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:01,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:36:01,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:36:01,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:36:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:36:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:01,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:01,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:01,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:01,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:36:01,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:36:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:36:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:01,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:36:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:01,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:01,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:01,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:36:01,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:36:01,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:36:01,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:01,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:36:01,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:01,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:36:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:01,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:01,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:01,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:36:01,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:36:01,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:36:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:36:01,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 37 proven. 50 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 22:36:01,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361849862] [2020-10-27 22:36:01,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:36:01,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:36:01,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690249646] [2020-10-27 22:36:01,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:36:01,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:36:01,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:36:01,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:36:01,550 INFO L87 Difference]: Start difference. First operand 76 states and 105 transitions. Second operand 13 states. [2020-10-27 22:36:02,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:36:02,698 INFO L93 Difference]: Finished difference Result 169 states and 259 transitions. [2020-10-27 22:36:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:36:02,699 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-10-27 22:36:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:36:02,702 INFO L225 Difference]: With dead ends: 169 [2020-10-27 22:36:02,702 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 22:36:02,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:36:02,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 22:36:02,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2020-10-27 22:36:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 22:36:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 113 transitions. [2020-10-27 22:36:02,717 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 113 transitions. Word has length 84 [2020-10-27 22:36:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:36:02,718 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 113 transitions. [2020-10-27 22:36:02,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:36:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 113 transitions. [2020-10-27 22:36:02,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:36:02,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:36:02,719 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:36:02,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:36:02,719 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:36:02,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:36:02,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1406199094, now seen corresponding path program 4 times [2020-10-27 22:36:02,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:36:02,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055122141] [2020-10-27 22:36:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:36:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 22:36:02,731 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 22:36:02,731 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 22:36:02,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:36:02,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 10:36:02 BoogieIcfgContainer [2020-10-27 22:36:02,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 22:36:02,758 INFO L168 Benchmark]: Toolchain (without parser) took 83776.83 ms. Allocated memory was 155.2 MB in the beginning and 571.5 MB in the end (delta: 416.3 MB). Free memory was 131.7 MB in the beginning and 355.3 MB in the end (delta: -223.7 MB). Peak memory consumption was 193.1 MB. Max. memory is 8.0 GB. [2020-10-27 22:36:02,759 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 125.8 MB. Free memory was 102.1 MB in the beginning and 102.0 MB in the end (delta: 71.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 22:36:02,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.96 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 121.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 22:36:02,760 INFO L168 Benchmark]: Boogie Preprocessor took 35.10 ms. Allocated memory is still 155.2 MB. Free memory was 121.6 MB in the beginning and 120.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 22:36:02,760 INFO L168 Benchmark]: RCFGBuilder took 363.23 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 106.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 22:36:02,761 INFO L168 Benchmark]: TraceAbstraction took 83073.25 ms. Allocated memory was 155.2 MB in the beginning and 571.5 MB in the end (delta: 416.3 MB). Free memory was 105.7 MB in the beginning and 355.3 MB in the end (delta: -249.6 MB). Peak memory consumption was 166.8 MB. Max. memory is 8.0 GB. [2020-10-27 22:36:02,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 125.8 MB. Free memory was 102.1 MB in the beginning and 102.0 MB in the end (delta: 71.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.96 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 121.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.10 ms. Allocated memory is still 155.2 MB. Free memory was 121.6 MB in the beginning and 120.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 363.23 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 106.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 83073.25 ms. Allocated memory was 155.2 MB in the beginning and 571.5 MB in the end (delta: 416.3 MB). Free memory was 105.7 MB in the beginning and 355.3 MB in the end (delta: -249.6 MB). Peak memory consumption was 166.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L38] int x = 4; [L39] CALL, EXPR fibo1(x) [L10] COND FALSE !(n < 1) [L12] COND FALSE !(n == 1) [L15] CALL, EXPR fibo2(n-1) [L20] COND FALSE !(n < 1) [L22] COND FALSE !(n == 1) [L25] CALL, EXPR fibo1(n-1) [L10] COND FALSE !(n < 1) [L12] COND FALSE !(n == 1) [L15] CALL, EXPR fibo2(n-1) [L20] COND FALSE !(n < 1) [L22] COND TRUE n == 1 [L23] return 1; [L15] RET, EXPR fibo2(n-1) [L15] CALL, EXPR fibo2(n-2) [L20] COND TRUE n < 1 [L21] return 0; [L15] RET, EXPR fibo2(n-2) [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) [L25] CALL, EXPR fibo1(n-2) [L10] COND FALSE !(n < 1) [L12] COND TRUE n == 1 [L13] return 1; [L25] RET, EXPR fibo1(n-2) [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) [L15] CALL, EXPR fibo2(n-2) [L20] COND FALSE !(n < 1) [L22] COND FALSE !(n == 1) [L25] CALL, EXPR fibo1(n-1) [L10] COND FALSE !(n < 1) [L12] COND TRUE n == 1 [L13] return 1; [L25] RET, EXPR fibo1(n-1) [L25] CALL, EXPR fibo1(n-2) [L10] COND TRUE n < 1 [L11] return 0; [L25] RET, EXPR fibo1(n-2) [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) [L39] int result = fibo1(x); [L40] COND TRUE result == 3 [L41] CALL reach_error() [L4] __assert_fail("0", "fibo_2calls_4-2.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 82.8s, OverallIterations: 15, TraceHistogramMax: 6, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 399 SDtfs, 616 SDslu, 786 SDs, 0 SdLazy, 2850 SolverSat, 420 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 415 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 35 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 74.1s InterpolantComputationTime, 721 NumberOfCodeBlocks, 721 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 637 ConstructedInterpolants, 0 QuantifiedInterpolants, 80363 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 432/549 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...