/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/id2_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:09:45,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:09:45,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:09:45,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:09:45,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:09:45,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:09:45,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:09:45,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:09:45,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:09:45,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:09:45,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:09:45,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:09:45,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:09:45,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:09:45,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:09:45,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:09:45,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:09:45,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:09:45,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:09:45,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:09:45,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:09:45,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:09:45,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:09:45,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:09:45,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:09:45,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:09:45,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:09:45,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:09:45,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:09:45,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:09:45,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:09:45,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:09:45,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:09:45,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:09:45,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:09:45,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:09:45,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:09:45,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:09:45,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:09:45,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:09:45,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:09:45,742 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 12:09:45,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:09:45,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:09:45,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:09:45,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:09:45,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:09:45,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:09:45,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:09:45,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:09:45,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:09:45,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:09:45,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:09:45,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:09:45,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:09:45,781 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:09:45,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:09:45,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:09:45,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:09:45,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:09:45,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:09:45,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:09:45,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:09:45,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:09:45,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:09:45,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:09:45,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:09:45,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:09:45,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:09:45,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:09:45,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:09:45,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:09:46,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:09:46,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:09:46,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:09:46,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:09:46,240 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:09:46,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-10-29 12:09:46,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0923316cf/7715ea188c574b2cae85a9305a0b396c/FLAGc889d2830 [2020-10-29 12:09:46,931 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:09:46,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-10-29 12:09:46,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0923316cf/7715ea188c574b2cae85a9305a0b396c/FLAGc889d2830 [2020-10-29 12:09:47,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0923316cf/7715ea188c574b2cae85a9305a0b396c [2020-10-29 12:09:47,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:09:47,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:09:47,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:09:47,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:09:47,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:09:47,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:09:47" (1/1) ... [2020-10-29 12:09:47,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593054a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47, skipping insertion in model container [2020-10-29 12:09:47,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:09:47" (1/1) ... [2020-10-29 12:09:47,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:09:47,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:09:47,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:09:47,617 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:09:47,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:09:47,651 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:09:47,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47 WrapperNode [2020-10-29 12:09:47,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:09:47,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:09:47,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:09:47,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:09:47,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47" (1/1) ... [2020-10-29 12:09:47,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47" (1/1) ... [2020-10-29 12:09:47,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47" (1/1) ... [2020-10-29 12:09:47,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47" (1/1) ... [2020-10-29 12:09:47,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47" (1/1) ... [2020-10-29 12:09:47,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47" (1/1) ... [2020-10-29 12:09:47,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47" (1/1) ... [2020-10-29 12:09:47,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:09:47,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:09:47,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:09:47,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:09:47,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47" (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 12:09:47,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:09:47,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:09:47,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:09:47,779 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-29 12:09:47,779 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-10-29 12:09:47,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:09:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:09:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:09:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:09:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:09:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:09:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-29 12:09:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-10-29 12:09:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:09:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:09:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:09:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:09:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:09:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:09:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:09:48,131 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:09:48,131 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:09:48,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:09:48 BoogieIcfgContainer [2020-10-29 12:09:48,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:09:48,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:09:48,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:09:48,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:09:48,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:09:47" (1/3) ... [2020-10-29 12:09:48,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ee823f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:09:48, skipping insertion in model container [2020-10-29 12:09:48,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:09:47" (2/3) ... [2020-10-29 12:09:48,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ee823f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:09:48, skipping insertion in model container [2020-10-29 12:09:48,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:09:48" (3/3) ... [2020-10-29 12:09:48,162 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2020-10-29 12:09:48,175 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:09:48,180 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:09:48,194 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:09:48,228 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:09:48,228 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:09:48,228 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:09:48,228 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:09:48,228 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:09:48,229 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:09:48,229 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:09:48,229 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:09:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-29 12:09:48,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 12:09:48,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:09:48,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:09:48,256 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:09:48,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:09:48,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1481297807, now seen corresponding path program 1 times [2020-10-29 12:09:48,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:09:48,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025732011] [2020-10-29 12:09:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:09:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:48,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:48,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:48,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:09:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 12:09:48,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:48,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:09:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:09:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:09:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 12:09:48,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:09:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:48,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:48,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:09:48,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:48,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:09:48,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:48,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:09:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:09:48,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:09:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:48,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:48,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:09:48,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:48,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:09:48,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:48,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:09:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:09:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:09:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:48,931 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 12:09:48,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025732011] [2020-10-29 12:09:48,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:09:48,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:09:48,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271806476] [2020-10-29 12:09:48,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:09:48,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:09:48,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:09:48,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:09:48,959 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 6 states. [2020-10-29 12:09:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:09:49,270 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-29 12:09:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:09:49,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 12:09:49,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:09:49,288 INFO L225 Difference]: With dead ends: 42 [2020-10-29 12:09:49,288 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 12:09:49,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:09:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 12:09:49,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-29 12:09:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 12:09:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-29 12:09:49,352 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 15 [2020-10-29 12:09:49,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:09:49,353 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-29 12:09:49,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:09:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-29 12:09:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 12:09:49,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:09:49,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:09:49,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:09:49,356 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:09:49,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:09:49,357 INFO L82 PathProgramCache]: Analyzing trace with hash 262491562, now seen corresponding path program 1 times [2020-10-29 12:09:49,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:09:49,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533403998] [2020-10-29 12:09:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:09:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:49,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:49,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:09:49,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:49,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 12:09:49,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:49,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:49,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:09:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:09:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:09:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:49,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:09:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:49,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:49,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:09:49,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:09:49,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:49,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:09:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:09:49,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:49,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:09:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:49,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:49,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:09:49,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 12:09:49,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:49,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:09:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:09:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:09:49,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:09:49,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:49,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:49,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:49,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:09:49,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:49,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 12:09:49,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:49,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:09:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:09:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:49,860 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 12:09:49,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533403998] [2020-10-29 12:09:49,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:09:49,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 12:09:49,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306471416] [2020-10-29 12:09:49,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:09:49,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:09:49,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:09:49,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:09:49,873 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 8 states. [2020-10-29 12:09:50,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:09:50,302 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-29 12:09:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:09:50,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-29 12:09:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:09:50,305 INFO L225 Difference]: With dead ends: 36 [2020-10-29 12:09:50,305 INFO L226 Difference]: Without dead ends: 31 [2020-10-29 12:09:50,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:09:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-29 12:09:50,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-29 12:09:50,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 12:09:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-29 12:09:50,329 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2020-10-29 12:09:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:09:50,330 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-29 12:09:50,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:09:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-29 12:09:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 12:09:50,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:09:50,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:09:50,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:09:50,334 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:09:50,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:09:50,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1067256061, now seen corresponding path program 1 times [2020-10-29 12:09:50,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:09:50,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746559585] [2020-10-29 12:09:50,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:09:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:50,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:50,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:50,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:09:50,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 12:09:50,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:50,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:09:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:09:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:09:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:09:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:50,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:50,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:09:50,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:50,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:09:50,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:50,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:09:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:09:50,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:09:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:50,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:50,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:50,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:09:50,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 12:09:50,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:50,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:09:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:09:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:09:50,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:50,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:50,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:09:50,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:09:50,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:50,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:09:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:09:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:50,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:50,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:50,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:09:50,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:50,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:09:50,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:50,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:50,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:09:50,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:09:50,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 12:09:50,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746559585] [2020-10-29 12:09:50,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:09:50,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:09:50,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764849897] [2020-10-29 12:09:50,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:09:50,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:09:50,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:09:50,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:09:50,926 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 10 states. [2020-10-29 12:09:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:09:51,312 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-29 12:09:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:09:51,312 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-29 12:09:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:09:51,314 INFO L225 Difference]: With dead ends: 42 [2020-10-29 12:09:51,314 INFO L226 Difference]: Without dead ends: 37 [2020-10-29 12:09:51,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:09:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-29 12:09:51,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-10-29 12:09:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 12:09:51,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-29 12:09:51,324 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 27 [2020-10-29 12:09:51,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:09:51,325 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-29 12:09:51,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:09:51,325 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-29 12:09:51,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 12:09:51,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:09:51,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:09:51,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:09:51,327 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:09:51,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:09:51,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1416908450, now seen corresponding path program 1 times [2020-10-29 12:09:51,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:09:51,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631241976] [2020-10-29 12:09:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:09:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:51,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:51,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:51,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:09:51,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:51,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 12:09:51,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:51,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:09:51,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:09:51,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:09:51,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:51,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:09:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:51,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:51,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:09:51,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:09:51,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:51,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:09:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:09:51,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:51,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:09:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:51,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:51,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:09:51,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 12:09:51,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:51,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:09:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:09:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:09:51,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:51,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:51,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:51,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:09:51,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 12:09:51,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:51,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:09:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:09:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:51,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:51,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:51,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:51,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:09:51,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:09:51,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:51,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:09:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:09:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:51,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:51,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:09:51,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:51,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:09:51,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:51,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:09:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:09:51,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 12:09:51,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631241976] [2020-10-29 12:09:51,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:09:51,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:09:51,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706321757] [2020-10-29 12:09:51,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:09:51,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:09:51,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:09:51,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:09:51,842 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 11 states. [2020-10-29 12:09:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:09:52,275 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-10-29 12:09:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:09:52,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-29 12:09:52,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:09:52,278 INFO L225 Difference]: With dead ends: 48 [2020-10-29 12:09:52,278 INFO L226 Difference]: Without dead ends: 43 [2020-10-29 12:09:52,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:09:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-29 12:09:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-10-29 12:09:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 12:09:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-29 12:09:52,288 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 33 [2020-10-29 12:09:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:09:52,288 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-29 12:09:52,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:09:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-29 12:09:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 12:09:52,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:09:52,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:09:52,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:09:52,291 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:09:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:09:52,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1482575991, now seen corresponding path program 2 times [2020-10-29 12:09:52,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:09:52,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998018692] [2020-10-29 12:09:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:09:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:52,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:52,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:09:52,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 12:09:52,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:52,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:52,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:09:52,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:09:52,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:09:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:52,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:09:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:52,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:52,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:52,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:09:52,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:09:52,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:52,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:52,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:09:52,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:09:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:52,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:09:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:52,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:52,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:52,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:09:52,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 12:09:52,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:52,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:09:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:09:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:09:52,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:52,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:52,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:09:52,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:52,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 12:09:52,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:52,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:52,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:09:52,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:52,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:09:52,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:52,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:52,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:52,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:52,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:09:52,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:52,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 12:09:52,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:52,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:09:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:09:52,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:52,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:52,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:52,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:09:52,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:09:52,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:52,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:09:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:09:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:52,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:52,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:52,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:09:52,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:52,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:09:52,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:52,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:09:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:09:52,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 12:09:52,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998018692] [2020-10-29 12:09:52,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:09:52,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:09:52,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837182628] [2020-10-29 12:09:52,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:09:52,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:09:52,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:09:52,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:09:52,952 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 13 states. [2020-10-29 12:09:53,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:09:53,483 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-29 12:09:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:09:53,484 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-29 12:09:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:09:53,486 INFO L225 Difference]: With dead ends: 54 [2020-10-29 12:09:53,486 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 12:09:53,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:09:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 12:09:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-29 12:09:53,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 12:09:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-29 12:09:53,496 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 39 [2020-10-29 12:09:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:09:53,498 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-29 12:09:53,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:09:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-29 12:09:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 12:09:53,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:09:53,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:09:53,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:09:53,501 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:09:53,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:09:53,501 INFO L82 PathProgramCache]: Analyzing trace with hash -487565550, now seen corresponding path program 2 times [2020-10-29 12:09:53,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:09:53,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400071261] [2020-10-29 12:09:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:09:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:53,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:53,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:53,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 12:09:53,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:53,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-29 12:09:53,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:53,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:09:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 12:09:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:09:53,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:09:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:53,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:53,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:09:53,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:09:53,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:53,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:09:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:09:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:09:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:53,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:53,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:09:53,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 12:09:53,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:53,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:09:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:09:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:53,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:54,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:54,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:09:54,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 12:09:54,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:54,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:09:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:09:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:54,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:54,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:54,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:54,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:09:54,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 12:09:54,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:54,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:09:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:09:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:54,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:54,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:09:54,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:09:54,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:54,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:09:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:09:54,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:54,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:54,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:54,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:09:54,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:09:54,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:54,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:09:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:09:54,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:54,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:54,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:54,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:54,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:09:54,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:54,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:09:54,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:54,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:09:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:09:54,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 12:09:54,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400071261] [2020-10-29 12:09:54,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:09:54,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:09:54,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926287476] [2020-10-29 12:09:54,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:09:54,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:09:54,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:09:54,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:09:54,534 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 16 states. [2020-10-29 12:09:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:09:55,628 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-29 12:09:55,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:09:55,628 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 12:09:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:09:55,630 INFO L225 Difference]: With dead ends: 60 [2020-10-29 12:09:55,630 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 12:09:55,631 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 12:09:55,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 12:09:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-10-29 12:09:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 12:09:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-29 12:09:55,643 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 45 [2020-10-29 12:09:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:09:55,645 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-29 12:09:55,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:09:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-29 12:09:55,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 12:09:55,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:09:55,649 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:09:55,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:09:55,650 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:09:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:09:55,654 INFO L82 PathProgramCache]: Analyzing trace with hash 720493547, now seen corresponding path program 3 times [2020-10-29 12:09:55,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:09:55,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346919934] [2020-10-29 12:09:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:09:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:55,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:56,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:56,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:09:56,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:09:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-29 12:09:56,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:56,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:09:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:09:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:09:56,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:56,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:09:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:56,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:56,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:09:56,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:09:56,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:56,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:09:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:09:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:56,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:09:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:56,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:56,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:09:56,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:09:56,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-29 12:09:56,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:56,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:09:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:09:56,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:09:56,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:56,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:56,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:09:56,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:09:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 12:09:56,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:56,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:09:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:09:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:56,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:57,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:57,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:09:57,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:09:57,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 12:09:57,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:57,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:09:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:09:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:57,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:57,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:57,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:57,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:09:57,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:09:57,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 12:09:57,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:57,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:09:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:09:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:57,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:57,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:57,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:57,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:09:57,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:09:57,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 12:09:57,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:57,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:09:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:09:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:57,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:57,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:57,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:09:57,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:09:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:09:57,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:57,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:09:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:57,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:09:57,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:09:57,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:09:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:09:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:09:57,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:09:57,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:09:57,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:09:57,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:09:57,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:09:57,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:09:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:09:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:09:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:09:57,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:09:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:09:57,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346919934] [2020-10-29 12:09:57,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:09:57,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:09:57,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099167475] [2020-10-29 12:09:57,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:09:57,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:09:57,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:09:57,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:09:57,479 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 13 states. [2020-10-29 12:09:58,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:09:58,825 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2020-10-29 12:09:58,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:09:58,826 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-29 12:09:58,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:09:58,827 INFO L225 Difference]: With dead ends: 77 [2020-10-29 12:09:58,827 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 12:09:58,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:09:58,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 12:09:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 12:09:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 12:09:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 12:09:58,832 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2020-10-29 12:09:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:09:58,832 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 12:09:58,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:09:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 12:09:58,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 12:09:58,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:09:58,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 12:09:59,204 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-29 12:09:59,204 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-29 12:09:59,204 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-29 12:09:59,204 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-29 12:09:59,205 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 12:09:59,205 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-29 12:09:59,205 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 12:09:59,205 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= |id2_#in~x| id2_~x) (not (= |id2_#in~x| 0)) (<= id2_~x |id2_#in~x|)) [2020-10-29 12:09:59,205 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-29 12:09:59,205 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-29 12:09:59,205 INFO L274 CegarLoopResult]: For program point id2EXIT(lines 14 17) no Hoare annotation was computed. [2020-10-29 12:09:59,205 INFO L277 CegarLoopResult]: At program point id2ENTRY(lines 14 17) the Hoare annotation is: true [2020-10-29 12:09:59,206 INFO L274 CegarLoopResult]: For program point id2FINAL(lines 14 17) no Hoare annotation was computed. [2020-10-29 12:09:59,206 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 12:09:59,206 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 12:09:59,206 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 12:09:59,207 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 12:09:59,207 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 19 25) the Hoare annotation is: true [2020-10-29 12:09:59,207 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 19 25) no Hoare annotation was computed. [2020-10-29 12:09:59,207 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: false [2020-10-29 12:09:59,207 INFO L274 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-10-29 12:09:59,208 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-29 12:09:59,208 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (= 5 main_~input~0) [2020-10-29 12:09:59,208 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-10-29 12:09:59,208 INFO L274 CegarLoopResult]: For program point L22-2(lines 19 25) no Hoare annotation was computed. [2020-10-29 12:09:59,209 INFO L274 CegarLoopResult]: For program point idFINAL(lines 9 12) no Hoare annotation was computed. [2020-10-29 12:09:59,209 INFO L270 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-10-29 12:09:59,209 INFO L274 CegarLoopResult]: For program point idEXIT(lines 9 12) no Hoare annotation was computed. [2020-10-29 12:09:59,209 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-29 12:09:59,210 INFO L274 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-10-29 12:09:59,210 INFO L277 CegarLoopResult]: At program point idENTRY(lines 9 12) the Hoare annotation is: true [2020-10-29 12:09:59,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:09:59 BoogieIcfgContainer [2020-10-29 12:09:59,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 12:09:59,221 INFO L168 Benchmark]: Toolchain (without parser) took 11876.49 ms. Allocated memory was 160.4 MB in the beginning and 278.9 MB in the end (delta: 118.5 MB). Free memory was 136.2 MB in the beginning and 252.2 MB in the end (delta: -116.0 MB). Peak memory consumption was 157.6 MB. Max. memory is 8.0 GB. [2020-10-29 12:09:59,221 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 12:09:59,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.97 ms. Allocated memory is still 160.4 MB. Free memory was 135.6 MB in the beginning and 126.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 12:09:59,223 INFO L168 Benchmark]: Boogie Preprocessor took 36.19 ms. Allocated memory is still 160.4 MB. Free memory was 126.6 MB in the beginning and 125.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 12:09:59,224 INFO L168 Benchmark]: RCFGBuilder took 442.09 ms. Allocated memory is still 160.4 MB. Free memory was 125.1 MB in the beginning and 111.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 12:09:59,225 INFO L168 Benchmark]: TraceAbstraction took 11068.79 ms. Allocated memory was 160.4 MB in the beginning and 278.9 MB in the end (delta: 118.5 MB). Free memory was 111.5 MB in the beginning and 252.2 MB in the end (delta: -140.7 MB). Peak memory consumption was 133.5 MB. Max. memory is 8.0 GB. [2020-10-29 12:09:59,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 300.97 ms. Allocated memory is still 160.4 MB. Free memory was 135.6 MB in the beginning and 126.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.19 ms. Allocated memory is still 160.4 MB. Free memory was 126.6 MB in the beginning and 125.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 442.09 ms. Allocated memory is still 160.4 MB. Free memory was 125.1 MB in the beginning and 111.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11068.79 ms. Allocated memory was 160.4 MB in the beginning and 278.9 MB in the end (delta: 118.5 MB). Free memory was 111.5 MB in the beginning and 252.2 MB in the end (delta: -140.7 MB). Peak memory consumption was 133.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.6s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 142 SDtfs, 262 SDslu, 362 SDs, 0 SdLazy, 1197 SolverSat, 154 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=6, 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, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 25 PreInvPairs, 25 NumberOfFragments, 55 HoareAnnotationTreeSize, 25 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 642 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 32710 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 55/114 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 correct! Received shutdown request...