/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive-simple/id_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:11:04,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:11:04,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:11:04,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:11:04,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:11:04,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:11:04,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:11:04,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:11:04,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:11:04,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:11:04,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:11:04,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:11:04,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:11:04,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:11:04,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:11:04,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:11:04,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:11:04,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:11:04,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:11:04,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:11:04,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:11:04,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:11:04,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:11:04,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:11:04,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:11:04,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:11:04,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:11:04,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:11:04,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:11:04,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:11:04,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:11:04,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:11:04,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:11:04,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:11:04,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:11:04,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:11:04,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:11:04,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:11:04,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:11:04,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:11:04,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:11:04,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:11:04,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:11:04,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:11:04,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:11:04,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:11:04,452 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:11:04,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:11:04,452 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:11:04,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:11:04,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:11:04,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:11:04,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:11:04,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:11:04,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:11:04,455 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:11:04,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:11:04,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:11:04,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:11:04,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:11:04,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:11:04,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:11:04,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:11:04,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:11:04,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:11:04,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:11:04,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:11:04,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:11:04,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:11:04,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:11:04,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:11:04,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:11:04,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:11:04,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:11:04,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:11:04,893 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:11:04,893 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:11:04,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o10.c [2020-10-29 12:11:04,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb59c3a29/b917b26434bc4e488c1f48c7ebf2b313/FLAG31314d30f [2020-10-29 12:11:05,640 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:11:05,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o10.c [2020-10-29 12:11:05,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb59c3a29/b917b26434bc4e488c1f48c7ebf2b313/FLAG31314d30f [2020-10-29 12:11:06,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb59c3a29/b917b26434bc4e488c1f48c7ebf2b313 [2020-10-29 12:11:06,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:11:06,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:11:06,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:11:06,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:11:06,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:11:06,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:11:06" (1/1) ... [2020-10-29 12:11:06,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4825ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06, skipping insertion in model container [2020-10-29 12:11:06,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:11:06" (1/1) ... [2020-10-29 12:11:06,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:11:06,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:11:06,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:11:06,255 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:11:06,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:11:06,288 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:11:06,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06 WrapperNode [2020-10-29 12:11:06,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:11:06,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:11:06,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:11:06,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:11:06,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06" (1/1) ... [2020-10-29 12:11:06,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06" (1/1) ... [2020-10-29 12:11:06,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06" (1/1) ... [2020-10-29 12:11:06,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06" (1/1) ... [2020-10-29 12:11:06,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06" (1/1) ... [2020-10-29 12:11:06,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06" (1/1) ... [2020-10-29 12:11:06,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06" (1/1) ... [2020-10-29 12:11:06,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:11:06,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:11:06,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:11:06,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:11:06,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:11:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:11:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:11:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:11:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-29 12:11:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:11:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-29 12:11:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:11:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:11:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:11:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:11:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-29 12:11:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:11:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:11:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:11:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:11:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:11:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:11:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:11:06,730 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:11:06,730 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:11:06,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:11:06 BoogieIcfgContainer [2020-10-29 12:11:06,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:11:06,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:11:06,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:11:06,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:11:06,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:11:06" (1/3) ... [2020-10-29 12:11:06,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547759a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:11:06, skipping insertion in model container [2020-10-29 12:11:06,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:06" (2/3) ... [2020-10-29 12:11:06,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547759a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:11:06, skipping insertion in model container [2020-10-29 12:11:06,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:11:06" (3/3) ... [2020-10-29 12:11:06,744 INFO L111 eAbstractionObserver]: Analyzing ICFG id_o10.c [2020-10-29 12:11:06,761 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:11:06,767 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:11:06,800 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:11:06,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:11:06,884 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:11:06,884 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:11:06,884 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:11:06,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:11:06,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:11:06,884 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:11:06,887 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:11:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-29 12:11:06,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 12:11:06,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:06,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:06,917 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:06,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:06,924 INFO L82 PathProgramCache]: Analyzing trace with hash 560135365, now seen corresponding path program 1 times [2020-10-29 12:11:06,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:06,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136832830] [2020-10-29 12:11:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:07,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:07,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:07,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:07,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:07,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 12:11:07,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:07,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:11:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:11:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:07,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:11:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:07,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:07,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:07,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:11:07,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:07,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:07,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:07,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:07,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:07,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:11:07,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:07,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:11:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:07,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:11:07,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136832830] [2020-10-29 12:11:07,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:11:07,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:11:07,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819300974] [2020-10-29 12:11:07,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:11:07,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:07,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:11:07,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:11:07,624 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-29 12:11:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:07,880 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-10-29 12:11:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:11:07,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 12:11:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:07,892 INFO L225 Difference]: With dead ends: 38 [2020-10-29 12:11:07,892 INFO L226 Difference]: Without dead ends: 20 [2020-10-29 12:11:07,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:11:07,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-29 12:11:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-29 12:11:07,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-29 12:11:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-29 12:11:07,946 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2020-10-29 12:11:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:07,947 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-29 12:11:07,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:11:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-29 12:11:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 12:11:07,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:07,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:07,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:11:07,950 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:07,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1295611761, now seen corresponding path program 1 times [2020-10-29 12:11:07,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:07,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702678376] [2020-10-29 12:11:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:08,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:08,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:08,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:08,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-29 12:11:08,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:08,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:11:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 12:11:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:11:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:08,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:08,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:08,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:11:08,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:08,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:08,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:08,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:08,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:08,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:08,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 12:11:08,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:08,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:11:08,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:08,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:08,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:08,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:08,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:11:08,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:08,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:11:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 12:11:08,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702678376] [2020-10-29 12:11:08,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:08,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:11:08,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053011873] [2020-10-29 12:11:08,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:11:08,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:08,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:11:08,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:11:08,616 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-10-29 12:11:08,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:08,906 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-29 12:11:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:11:08,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-29 12:11:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:08,908 INFO L225 Difference]: With dead ends: 28 [2020-10-29 12:11:08,908 INFO L226 Difference]: Without dead ends: 23 [2020-10-29 12:11:08,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:11:08,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-29 12:11:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-29 12:11:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 12:11:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-29 12:11:08,919 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-10-29 12:11:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:08,919 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-29 12:11:08,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:11:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-29 12:11:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 12:11:08,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:08,921 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:08,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:11:08,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:08,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:08,922 INFO L82 PathProgramCache]: Analyzing trace with hash -116387003, now seen corresponding path program 2 times [2020-10-29 12:11:08,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:08,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275512038] [2020-10-29 12:11:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:08,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:09,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:09,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:09,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 12:11:09,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:09,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:11:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 12:11:09,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:11:09,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:09,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:09,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:09,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:09,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:09,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:11:09,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:09,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:09,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:09,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:09,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:09,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:09,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 12:11:09,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:09,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:11:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:09,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:09,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:09,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:09,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:09,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:09,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:11:09,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:09,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:11:09,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:09,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:09,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:09,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:11:09,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:09,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:11:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 12:11:09,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275512038] [2020-10-29 12:11:09,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:09,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:11:09,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847443040] [2020-10-29 12:11:09,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:11:09,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:09,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:11:09,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:11:09,526 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 10 states. [2020-10-29 12:11:09,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:09,940 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-10-29 12:11:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:11:09,941 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-29 12:11:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:09,942 INFO L225 Difference]: With dead ends: 31 [2020-10-29 12:11:09,942 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 12:11:09,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:11:09,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 12:11:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-29 12:11:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 12:11:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-29 12:11:09,951 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 27 [2020-10-29 12:11:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:09,951 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-29 12:11:09,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:11:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-29 12:11:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 12:11:09,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:09,953 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:09,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:11:09,953 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:09,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:09,954 INFO L82 PathProgramCache]: Analyzing trace with hash -738125937, now seen corresponding path program 3 times [2020-10-29 12:11:09,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:09,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156213609] [2020-10-29 12:11:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:09,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:10,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:10,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:10,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 12:11:10,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:10,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:11:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 12:11:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:11:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:10,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:10,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:10,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:10,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:11:10,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:10,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:10,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:10,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:10,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:10,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:10,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:10,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:10,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 12:11:10,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:10,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:11:10,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:10,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:10,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:10,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:10,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:10,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:10,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 12:11:10,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:10,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:11:10,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:10,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:10,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:10,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:10,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:10,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:11:10,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:10,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:11:10,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:10,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:10,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:10,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:11:10,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:10,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:11:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:11:10,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156213609] [2020-10-29 12:11:10,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:10,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:11:10,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931394002] [2020-10-29 12:11:10,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:11:10,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:10,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:11:10,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:11:10,634 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 12 states. [2020-10-29 12:11:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:11,177 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-29 12:11:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:11:11,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-29 12:11:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:11,179 INFO L225 Difference]: With dead ends: 34 [2020-10-29 12:11:11,179 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 12:11:11,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:11:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 12:11:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 12:11:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 12:11:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-29 12:11:11,187 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 33 [2020-10-29 12:11:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:11,188 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-29 12:11:11,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:11:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-29 12:11:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 12:11:11,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:11,189 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:11,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:11:11,190 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:11,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1342585285, now seen corresponding path program 4 times [2020-10-29 12:11:11,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:11,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58749946] [2020-10-29 12:11:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:11,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:11,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:11,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:11:11,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:11,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-29 12:11:11,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:11,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:11:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 12:11:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:11:11,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:11,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:11,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:11,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:11,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:11,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:11:11,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:11,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:11,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:11,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:11,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:11,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:11,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:11,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:11,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:11,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:11,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 12:11:11,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:11,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:11:11,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:12,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:12,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:12,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:12,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 12:11:12,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:12,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:11:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:12,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:12,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:12,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:12,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:12,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:12,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:11:12,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:12,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:11:12,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:12,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:12,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:12,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:12,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:11:12,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:12,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:11:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:12,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:12,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:12,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:12,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:11:12,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:12,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:12,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:11:12,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:12,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:12,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 12:11:12,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58749946] [2020-10-29 12:11:12,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:12,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:11:12,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760481031] [2020-10-29 12:11:12,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:11:12,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:12,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:11:12,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:11:12,367 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 14 states. [2020-10-29 12:11:13,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:13,050 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-10-29 12:11:13,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:11:13,050 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-29 12:11:13,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:13,052 INFO L225 Difference]: With dead ends: 37 [2020-10-29 12:11:13,052 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 12:11:13,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:11:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 12:11:13,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-29 12:11:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 12:11:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-29 12:11:13,069 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 39 [2020-10-29 12:11:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:13,069 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-29 12:11:13,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:11:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-29 12:11:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 12:11:13,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:13,072 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:13,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:11:13,073 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:13,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:13,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1660180111, now seen corresponding path program 5 times [2020-10-29 12:11:13,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:13,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98829996] [2020-10-29 12:11:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:13,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:13,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 12:11:13,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-29 12:11:13,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:13,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:11:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 12:11:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:11:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:13,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:13,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:13,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:13,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:11:13,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:13,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:13,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:13,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:13,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:13,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:13,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:13,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:13,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:13,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 12:11:13,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:13,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:11:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:11:13,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:13,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:13,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:14,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:14,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:14,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:14,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 12:11:14,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:14,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:14,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:14,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:14,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:11:14,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:14,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:14,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:14,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:14,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:14,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 12:11:14,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:14,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:11:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:14,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:14,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:14,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:14,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:14,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:14,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 12:11:14,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:14,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:11:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:14,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:14,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:14,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:14,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:11:14,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:14,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:11:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:14,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:14,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:14,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:14,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:14,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:14,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:11:14,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:14,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:14,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:11:14,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:14,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:14,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 12:11:14,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98829996] [2020-10-29 12:11:14,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:14,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:11:14,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876688139] [2020-10-29 12:11:14,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:11:14,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:14,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:11:14,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:11:14,564 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 16 states. [2020-10-29 12:11:15,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:15,478 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-29 12:11:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:11:15,480 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 12:11:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:15,481 INFO L225 Difference]: With dead ends: 40 [2020-10-29 12:11:15,481 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 12:11:15,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:11:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 12:11:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-29 12:11:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 12:11:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-29 12:11:15,502 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 45 [2020-10-29 12:11:15,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:15,503 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-29 12:11:15,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:11:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-29 12:11:15,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 12:11:15,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:15,506 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:15,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:11:15,506 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:15,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:15,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1624338501, now seen corresponding path program 6 times [2020-10-29 12:11:15,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:15,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205591079] [2020-10-29 12:11:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:15,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:15,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:11:15,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-29 12:11:15,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:15,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:11:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 12:11:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:11:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:16,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:16,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:16,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:16,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:16,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:16,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:11:16,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:16,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:16,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:16,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:16,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:16,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:11:16,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 12:11:16,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:16,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:11:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:11:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:16,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:16,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:16,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:16,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 12:11:16,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:16,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:16,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:11:16,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:16,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:11:16,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:16,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:16,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:16,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:16,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:16,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:16,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 12:11:16,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:16,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:11:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:16,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:16,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:16,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:16,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 12:11:16,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:16,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:11:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:17,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:17,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:17,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:17,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:17,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 12:11:17,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:17,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:11:17,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:17,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:17,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:17,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:17,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:17,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:11:17,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:17,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:11:17,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:17,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:17,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:17,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:17,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:11:17,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:17,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:11:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:17,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 12:11:17,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205591079] [2020-10-29 12:11:17,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:17,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:11:17,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10555205] [2020-10-29 12:11:17,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:11:17,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:17,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:11:17,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:11:17,234 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 18 states. [2020-10-29 12:11:18,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:18,343 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-10-29 12:11:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:11:18,344 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 51 [2020-10-29 12:11:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:18,346 INFO L225 Difference]: With dead ends: 43 [2020-10-29 12:11:18,346 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 12:11:18,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:11:18,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 12:11:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-29 12:11:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 12:11:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-10-29 12:11:18,363 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 51 [2020-10-29 12:11:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:18,364 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-10-29 12:11:18,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:11:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-10-29 12:11:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 12:11:18,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:18,367 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:18,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:11:18,367 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash 502547855, now seen corresponding path program 7 times [2020-10-29 12:11:18,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:18,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947657884] [2020-10-29 12:11:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:18,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:18,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 12:11:18,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-29 12:11:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:18,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:11:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 12:11:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:11:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:18,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:18,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:19,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:19,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:19,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:19,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:11:19,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:19,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:19,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:19,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:19,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 12:11:19,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-29 12:11:19,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:19,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:11:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 12:11:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:19,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:19,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:19,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:19,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:11:19,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 12:11:19,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:19,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:19,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:11:19,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:19,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:11:19,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:19,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:19,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:19,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:19,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:19,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 12:11:19,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:19,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:19,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:11:19,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:19,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:11:19,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:19,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:20,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:20,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:20,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 12:11:20,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:20,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:11:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:20,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:20,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:20,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 12:11:20,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:20,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:11:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:20,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:20,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:20,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:20,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:11:20,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:20,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:11:20,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:20,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:20,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:20,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:20,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:11:20,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:20,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:11:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:20,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:20,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:20,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:20,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:20,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:11:20,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:20,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:11:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-29 12:11:20,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947657884] [2020-10-29 12:11:20,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:20,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:11:20,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164350192] [2020-10-29 12:11:20,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:11:20,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:20,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:11:20,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:11:20,440 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 20 states. [2020-10-29 12:11:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:21,861 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-29 12:11:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:11:21,862 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-29 12:11:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:21,865 INFO L225 Difference]: With dead ends: 46 [2020-10-29 12:11:21,866 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 12:11:21,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 12:11:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 12:11:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-29 12:11:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 12:11:21,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-10-29 12:11:21,885 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 57 [2020-10-29 12:11:21,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:21,886 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-10-29 12:11:21,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:11:21,886 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-10-29 12:11:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 12:11:21,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:21,887 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:21,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:11:21,887 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:21,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1459767611, now seen corresponding path program 8 times [2020-10-29 12:11:21,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:21,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203684595] [2020-10-29 12:11:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:21,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:22,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:22,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 12:11:22,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-29 12:11:22,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:22,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:11:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 12:11:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:11:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:22,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:22,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:22,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:22,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:22,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:11:22,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:22,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:22,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:22,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:22,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:22,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:23,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:23,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:11:23,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:23,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-29 12:11:23,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:23,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:23,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:11:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 12:11:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:23,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:23,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:23,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 12:11:23,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 12:11:23,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:23,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:11:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 12:11:23,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:23,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:23,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:23,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:23,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:11:23,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 12:11:23,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:23,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:11:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:11:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:23,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:24,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:24,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:24,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:24,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 12:11:24,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:24,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:11:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:11:24,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:24,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:24,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:24,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:24,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 12:11:24,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:24,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:11:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:24,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:24,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:24,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:24,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 12:11:24,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:24,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:11:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:24,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:24,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:24,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:24,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:11:24,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:24,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:11:24,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:24,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:24,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:24,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:24,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:24,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:11:24,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:24,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:11:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:24,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:24,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:24,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:24,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:24,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:11:24,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:24,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:11:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:24,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 12:11:24,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203684595] [2020-10-29 12:11:24,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:24,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:11:24,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323420328] [2020-10-29 12:11:24,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:11:24,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:24,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:11:24,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:11:24,611 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 22 states. [2020-10-29 12:11:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:26,198 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-10-29 12:11:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:11:26,199 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 63 [2020-10-29 12:11:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:26,200 INFO L225 Difference]: With dead ends: 49 [2020-10-29 12:11:26,200 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 12:11:26,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 12:11:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 12:11:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-29 12:11:26,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 12:11:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-29 12:11:26,209 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 63 [2020-10-29 12:11:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:26,209 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-29 12:11:26,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:11:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-29 12:11:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 12:11:26,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:26,210 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:26,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:11:26,211 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:26,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:26,211 INFO L82 PathProgramCache]: Analyzing trace with hash 273998991, now seen corresponding path program 9 times [2020-10-29 12:11:26,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:26,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787054620] [2020-10-29 12:11:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:26,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:26,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 12:11:26,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:26,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-29 12:11:26,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:26,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:11:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 12:11:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:11:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:27,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:27,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:27,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:27,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:11:27,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:27,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:27,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:27,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:27,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 12:11:27,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-29 12:11:27,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:27,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:11:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:11:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:27,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:27,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:27,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:11:27,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-29 12:11:27,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:27,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:11:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 12:11:27,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:28,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:28,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:28,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 12:11:28,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:28,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 12:11:28,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:28,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:11:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 12:11:28,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:28,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:28,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:28,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:11:28,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 12:11:28,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:28,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:11:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:11:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:28,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:28,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:28,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:28,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:28,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:28,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 12:11:28,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:28,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:11:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:11:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:28,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:28,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:28,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 12:11:28,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:28,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:11:28,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:29,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:29,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:29,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:29,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:11:29,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:29,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:11:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:29,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:29,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:29,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:29,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:29,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:29,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:11:29,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:29,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:29,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:11:29,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:29,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:29,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:29,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:29,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:29,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:11:29,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:29,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:11:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:29,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:29,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:29,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:29,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:29,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:11:29,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:29,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:11:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:11:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 12:11:29,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787054620] [2020-10-29 12:11:29,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:29,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 12:11:29,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557610296] [2020-10-29 12:11:29,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 12:11:29,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:29,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 12:11:29,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:11:29,449 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 24 states. [2020-10-29 12:11:31,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:31,235 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-10-29 12:11:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 12:11:31,236 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 69 [2020-10-29 12:11:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:31,237 INFO L225 Difference]: With dead ends: 52 [2020-10-29 12:11:31,237 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 12:11:31,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=129, Invalid=1851, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 12:11:31,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 12:11:31,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-29 12:11:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 12:11:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-29 12:11:31,247 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 69 [2020-10-29 12:11:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:31,247 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-29 12:11:31,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 12:11:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-29 12:11:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 12:11:31,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:31,248 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:31,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:11:31,249 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:31,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:31,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1458107067, now seen corresponding path program 10 times [2020-10-29 12:11:31,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:31,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903495965] [2020-10-29 12:11:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 12:11:31,276 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 12:11:31,276 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 12:11:31,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:11:31,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:11:31 BoogieIcfgContainer [2020-10-29 12:11:31,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 12:11:31,304 INFO L168 Benchmark]: Toolchain (without parser) took 25282.57 ms. Allocated memory was 164.6 MB in the beginning and 418.4 MB in the end (delta: 253.8 MB). Free memory was 140.1 MB in the beginning and 359.6 MB in the end (delta: -219.5 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:31,305 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 164.6 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 12:11:31,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.42 ms. Allocated memory is still 164.6 MB. Free memory was 139.5 MB in the beginning and 130.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:31,306 INFO L168 Benchmark]: Boogie Preprocessor took 34.73 ms. Allocated memory is still 164.6 MB. Free memory was 130.4 MB in the beginning and 128.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:31,307 INFO L168 Benchmark]: RCFGBuilder took 407.06 ms. Allocated memory is still 164.6 MB. Free memory was 128.7 MB in the beginning and 116.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:31,308 INFO L168 Benchmark]: TraceAbstraction took 24566.81 ms. Allocated memory was 164.6 MB in the beginning and 418.4 MB in the end (delta: 253.8 MB). Free memory was 116.2 MB in the beginning and 359.6 MB in the end (delta: -243.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:31,311 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 164.6 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.42 ms. Allocated memory is still 164.6 MB. Free memory was 139.5 MB in the beginning and 130.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.73 ms. Allocated memory is still 164.6 MB. Free memory was 130.4 MB in the beginning and 128.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 407.06 ms. Allocated memory is still 164.6 MB. Free memory was 128.7 MB in the beginning and 116.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24566.81 ms. Allocated memory was 164.6 MB in the beginning and 418.4 MB in the end (delta: 253.8 MB). Free memory was 116.2 MB in the beginning and 359.6 MB in the end (delta: -243.4 MB). Peak memory consumption was 11.0 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: [L12] unsigned int input = __VERIFIER_nondet_uint(); [L13] CALL, EXPR id(input) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND TRUE x==0 [L7] return 0; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) [L13] unsigned int result = id(input); [L14] COND TRUE result == 10 [L15] CALL reach_error() [L4] __assert_fail("0", "id_o10.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.4s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 189 SDtfs, 151 SDslu, 867 SDs, 0 SdLazy, 3433 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 390 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 495 NumberOfCodeBlocks, 495 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 84000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/900 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...