/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:10:47,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:10:47,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:10:48,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:10:48,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:10:48,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:10:48,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:10:48,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:10:48,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:10:48,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:10:48,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:10:48,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:10:48,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:10:48,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:10:48,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:10:48,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:10:48,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:10:48,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:10:48,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:10:48,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:10:48,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:10:48,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:10:48,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:10:48,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:10:48,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:10:48,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:10:48,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:10:48,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:10:48,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:10:48,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:10:48,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:10:48,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:10:48,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:10:48,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:10:48,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:10:48,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:10:48,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:10:48,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:10:48,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:10:48,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:10:48,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:10:48,071 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 12:10:48,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:10:48,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:10:48,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:10:48,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:10:48,142 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:10:48,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:10:48,142 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:10:48,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:10:48,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:10:48,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:10:48,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:10:48,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:10:48,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:10:48,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:10:48,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:10:48,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:10:48,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:10:48,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:10:48,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:10:48,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:10:48,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:10:48,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:10:48,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:10:48,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:10:48,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:10:48,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:10:48,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:10:48,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:10:48,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:10:48,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:10:48,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:10:48,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:10:48,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:10:48,627 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:10:48,628 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:10:48,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-10-29 12:10:48,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f403f125/9362e778d0b04437bcedae8ca7919f6f/FLAG868c9a355 [2020-10-29 12:10:49,316 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:10:49,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-10-29 12:10:49,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f403f125/9362e778d0b04437bcedae8ca7919f6f/FLAG868c9a355 [2020-10-29 12:10:49,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f403f125/9362e778d0b04437bcedae8ca7919f6f [2020-10-29 12:10:49,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:10:49,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:10:49,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:10:49,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:10:49,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:10:49,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:10:49" (1/1) ... [2020-10-29 12:10:49,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb06265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49, skipping insertion in model container [2020-10-29 12:10:49,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:10:49" (1/1) ... [2020-10-29 12:10:49,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:10:49,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:10:49,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:10:49,945 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:10:49,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:10:49,987 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:10:49,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49 WrapperNode [2020-10-29 12:10:49,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:10:49,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:10:49,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:10:49,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:10:50,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49" (1/1) ... [2020-10-29 12:10:50,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49" (1/1) ... [2020-10-29 12:10:50,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49" (1/1) ... [2020-10-29 12:10:50,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49" (1/1) ... [2020-10-29 12:10:50,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49" (1/1) ... [2020-10-29 12:10:50,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49" (1/1) ... [2020-10-29 12:10:50,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49" (1/1) ... [2020-10-29 12:10:50,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:10:50,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:10:50,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:10:50,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:10:50,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49" (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 12:10:50,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:10:50,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:10:50,154 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:10:50,154 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-29 12:10:50,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:10:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:10:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:10:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:10:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:10:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:10:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-29 12:10:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:10:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:10:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:10:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:10:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:10:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:10:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:10:50,424 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:10:50,425 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:10:50,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:10:50 BoogieIcfgContainer [2020-10-29 12:10:50,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:10:50,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:10:50,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:10:50,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:10:50,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:10:49" (1/3) ... [2020-10-29 12:10:50,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c195ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:10:50, skipping insertion in model container [2020-10-29 12:10:50,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:10:49" (2/3) ... [2020-10-29 12:10:50,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c195ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:10:50, skipping insertion in model container [2020-10-29 12:10:50,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:10:50" (3/3) ... [2020-10-29 12:10:50,442 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2020-10-29 12:10:50,458 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:10:50,464 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:10:50,484 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:10:50,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:10:50,540 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:10:50,540 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:10:50,540 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:10:50,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:10:50,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:10:50,541 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:10:50,541 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:10:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-29 12:10:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 12:10:50,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:10:50,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:10:50,584 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:10:50,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:10:50,591 INFO L82 PathProgramCache]: Analyzing trace with hash 560135365, now seen corresponding path program 1 times [2020-10-29 12:10:50,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:10:50,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912829753] [2020-10-29 12:10:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:10:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:50,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:50,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:10:50,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:50,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 12:10:50,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:50,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:50,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:10:50,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:10:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:10:50,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:10:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:10:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:51,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:51,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:10:51,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:51,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:10:51,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:51,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:51,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:10:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:10:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:51,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:10:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:51,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:51,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:10:51,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:10:51,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:51,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:10:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:10:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:10:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:51,243 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 12:10:51,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912829753] [2020-10-29 12:10:51,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:10:51,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:10:51,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422091057] [2020-10-29 12:10:51,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:10:51,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:10:51,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:10:51,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:10:51,272 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-29 12:10:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:10:51,638 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-29 12:10:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:10:51,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 12:10:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:10:51,650 INFO L225 Difference]: With dead ends: 36 [2020-10-29 12:10:51,651 INFO L226 Difference]: Without dead ends: 20 [2020-10-29 12:10:51,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:10:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-29 12:10:51,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-29 12:10:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-29 12:10:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-29 12:10:51,705 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2020-10-29 12:10:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:10:51,706 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-29 12:10:51,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:10:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-29 12:10:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 12:10:51,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:10:51,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:10:51,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:10:51,710 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:10:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:10:51,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1295611761, now seen corresponding path program 1 times [2020-10-29 12:10:51,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:10:51,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771389728] [2020-10-29 12:10:51,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:10:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:52,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:52,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:10:52,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-29 12:10:52,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:52,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:10:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:10:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:10:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:10:52,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:10:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:52,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:52,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:52,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:10:52,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:52,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:10:52,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:52,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:10:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:10:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:52,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:10:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:52,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:52,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:10:52,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:10:52,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:52,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:10:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:10:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:10:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:52,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:52,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:52,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:10:52,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:52,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:10:52,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:52,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:10:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:10:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 12:10:52,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771389728] [2020-10-29 12:10:52,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:10:52,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:10:52,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766803669] [2020-10-29 12:10:52,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:10:52,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:10:52,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:10:52,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:10:52,229 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-10-29 12:10:52,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:10:52,449 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-29 12:10:52,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:10:52,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-29 12:10:52,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:10:52,451 INFO L225 Difference]: With dead ends: 28 [2020-10-29 12:10:52,451 INFO L226 Difference]: Without dead ends: 23 [2020-10-29 12:10:52,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:10:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-29 12:10:52,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-29 12:10:52,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 12:10:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-29 12:10:52,465 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-10-29 12:10:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:10:52,466 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-29 12:10:52,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:10:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-29 12:10:52,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 12:10:52,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:10:52,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:10:52,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:10:52,468 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:10:52,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:10:52,469 INFO L82 PathProgramCache]: Analyzing trace with hash -116387003, now seen corresponding path program 2 times [2020-10-29 12:10:52,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:10:52,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821709840] [2020-10-29 12:10:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:10:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:52,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:52,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:10:52,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:52,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-29 12:10:52,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:52,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:10:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:10:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:10:52,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:10:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:52,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:52,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:10:52,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:10:52,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:52,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:10:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:10:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:52,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:10:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:52,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:52,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:10:52,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:52,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 12:10:52,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:52,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:10:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:10:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:10:52,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:52,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:52,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:52,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:10:52,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:52,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:10:52,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:52,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:10:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:10:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:52,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:52,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:52,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:10:52,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:10:52,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:52,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:10:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:10:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 12:10:53,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821709840] [2020-10-29 12:10:53,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:10:53,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:10:53,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149455920] [2020-10-29 12:10:53,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:10:53,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:10:53,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:10:53,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:10:53,007 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 9 states. [2020-10-29 12:10:53,342 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-29 12:10:53,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:10:53,508 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-10-29 12:10:53,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:10:53,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-29 12:10:53,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:10:53,510 INFO L225 Difference]: With dead ends: 31 [2020-10-29 12:10:53,510 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 12:10:53,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:10:53,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 12:10:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-29 12:10:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 12:10:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-29 12:10:53,519 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 27 [2020-10-29 12:10:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:10:53,520 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-29 12:10:53,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:10:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-29 12:10:53,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 12:10:53,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:10:53,522 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:10:53,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:10:53,522 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:10:53,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:10:53,523 INFO L82 PathProgramCache]: Analyzing trace with hash -738125937, now seen corresponding path program 3 times [2020-10-29 12:10:53,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:10:53,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544341553] [2020-10-29 12:10:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:10:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:53,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:53,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:10:53,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:53,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 12:10:53,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:53,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:10:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:10:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:10:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:53,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:10:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:53,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:53,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:53,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:10:53,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:53,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:10:53,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:53,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:10:53,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:53,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:10:53,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:53,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:10:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:53,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:53,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:10:53,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 12:10:53,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:53,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:10:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:10:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:10:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:53,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:54,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:54,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:54,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:10:54,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 12:10:54,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:54,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:10:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:10:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:54,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:54,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:54,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:54,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:10:54,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:54,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 12:10:54,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:54,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:10:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:10:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:54,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:54,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:54,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:10:54,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:54,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:10:54,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:54,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:10:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:10:54,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 12:10:54,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544341553] [2020-10-29 12:10:54,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:10:54,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:10:54,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350964216] [2020-10-29 12:10:54,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:10:54,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:10:54,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:10:54,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:10:54,158 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states. [2020-10-29 12:10:54,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:10:54,485 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-29 12:10:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:10:54,485 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-29 12:10:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:10:54,488 INFO L225 Difference]: With dead ends: 34 [2020-10-29 12:10:54,489 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 12:10:54,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:10:54,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 12:10:54,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 12:10:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 12:10:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-29 12:10:54,497 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 33 [2020-10-29 12:10:54,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:10:54,497 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-29 12:10:54,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:10:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-29 12:10:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 12:10:54,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:10:54,499 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:10:54,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:10:54,499 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:10:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:10:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1342585285, now seen corresponding path program 4 times [2020-10-29 12:10:54,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:10:54,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376917313] [2020-10-29 12:10:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:10:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:54,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:54,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:54,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:10:54,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 12:10:54,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:54,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:10:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:10:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:10:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:10:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:54,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:54,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:10:54,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:54,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:10:54,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:54,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:10:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:10:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:54,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:10:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:54,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:54,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:54,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:10:54,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:54,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 12:10:54,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:54,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:10:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:10:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:10:54,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:54,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:54,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:54,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:10:54,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:54,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 12:10:54,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:54,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:10:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:10:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:54,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:55,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:55,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:10:55,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:55,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 12:10:55,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:55,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:10:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:55,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:10:55,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:55,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:55,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:55,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:10:55,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:10:55,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:55,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:10:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:10:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:55,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:55,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:55,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:10:55,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:55,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:10:55,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:55,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:10:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:10:55,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 12:10:55,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376917313] [2020-10-29 12:10:55,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:10:55,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:10:55,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500783370] [2020-10-29 12:10:55,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:10:55,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:10:55,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:10:55,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:10:55,137 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 12 states. [2020-10-29 12:10:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:10:55,578 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-10-29 12:10:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:10:55,580 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-29 12:10:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:10:55,583 INFO L225 Difference]: With dead ends: 37 [2020-10-29 12:10:55,584 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 12:10:55,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:10:55,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 12:10:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-29 12:10:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 12:10:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-29 12:10:55,593 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 39 [2020-10-29 12:10:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:10:55,594 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-29 12:10:55,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:10:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-29 12:10:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 12:10:55,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:10:55,596 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:10:55,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:10:55,596 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:10:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:10:55,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1660180111, now seen corresponding path program 5 times [2020-10-29 12:10:55,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:10:55,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229782099] [2020-10-29 12:10:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:10:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:55,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:55,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:55,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 12:10:55,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-29 12:10:55,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:55,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:10:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 12:10:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:10:55,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:10:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:55,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:55,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:55,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:10:55,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:55,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:10:55,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:55,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:10:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:10:55,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:55,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:10:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:56,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:56,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:56,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:10:56,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 12:10:56,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:56,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:10:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:10:56,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:56,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:56,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:56,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:56,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:10:56,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:56,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 12:10:56,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:56,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:10:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:10:56,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:56,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:56,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:56,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:56,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:10:56,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:56,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 12:10:56,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:56,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:56,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:10:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:10:56,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:56,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:56,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:56,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:10:56,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:56,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 12:10:56,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:56,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:10:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:10:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:56,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:56,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:56,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:10:56,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:10:56,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:56,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:56,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:10:56,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:10:56,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:56,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:56,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:56,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:10:56,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:10:56,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:56,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:10:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:10:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 12:10:56,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229782099] [2020-10-29 12:10:56,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:10:56,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:10:56,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191977502] [2020-10-29 12:10:56,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:10:56,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:10:56,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:10:56,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:10:56,774 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 16 states. [2020-10-29 12:10:57,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:10:57,690 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-29 12:10:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:10:57,691 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 12:10:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:10:57,692 INFO L225 Difference]: With dead ends: 40 [2020-10-29 12:10:57,692 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 12:10:57,694 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 12:10:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 12:10:57,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-29 12:10:57,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 12:10:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-29 12:10:57,701 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 45 [2020-10-29 12:10:57,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:10:57,702 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-29 12:10:57,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:10:57,702 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-29 12:10:57,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 12:10:57,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:10:57,704 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:10:57,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:10:57,704 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:10:57,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:10:57,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1624338501, now seen corresponding path program 6 times [2020-10-29 12:10:57,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:10:57,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867066740] [2020-10-29 12:10:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:10:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:58,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:58,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:10:58,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:10:58,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-29 12:10:58,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:58,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:10:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:10:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:10:58,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:10:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:58,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:58,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:10:58,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:10:58,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:58,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:10:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:10:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:10:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:58,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:58,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:10:58,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:10:58,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-29 12:10:58,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:58,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:10:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:10:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:10:58,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:58,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:58,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:58,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:58,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:10:58,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:10:58,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-29 12:10:58,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:58,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:10:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:10:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:58,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:58,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:59,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:59,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:59,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:10:59,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:10:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 12:10:59,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:59,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:10:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:10:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:59,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:59,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:59,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:59,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:10:59,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:10:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 12:10:59,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:59,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:10:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:10:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:59,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:59,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:59,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:59,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:10:59,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:10:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 12:10:59,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:59,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:10:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:10:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:10:59,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:59,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:59,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:59,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:10:59,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:10:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:10:59,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:59,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:59,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:10:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:10:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:59,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:10:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:10:59,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:10:59,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:10:59,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:10:59,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:10:59,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:10:59,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:10:59,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:10:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:10:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:10:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:10:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:10:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 21 proven. 56 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-29 12:10:59,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867066740] [2020-10-29 12:10:59,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:10:59,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:10:59,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971532902] [2020-10-29 12:10:59,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:10:59,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:10:59,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:10:59,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:10:59,586 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 12 states. [2020-10-29 12:11:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:01,111 INFO L93 Difference]: Finished difference Result 63 states and 92 transitions. [2020-10-29 12:11:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:11:01,112 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-29 12:11:01,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:01,113 INFO L225 Difference]: With dead ends: 63 [2020-10-29 12:11:01,113 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 12:11:01,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:11:01,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 12:11:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 12:11:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 12:11:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 12:11:01,116 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2020-10-29 12:11:01,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:01,117 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 12:11:01,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:11:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 12:11:01,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 12:11:01,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:11:01,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 12:11:01,362 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 7 [2020-10-29 12:11:01,469 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-29 12:11:01,470 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-29 12:11:01,470 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-29 12:11:01,470 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-29 12:11:01,470 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 12:11:01,470 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 12:11:01,470 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 12:11:01,471 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 12:11:01,471 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 12:11:01,471 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 12:11:01,471 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 12:11:01,471 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-10-29 12:11:01,471 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-10-29 12:11:01,471 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: false [2020-10-29 12:11:01,472 INFO L274 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-29 12:11:01,472 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-29 12:11:01,472 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (= 5 main_~input~0) [2020-10-29 12:11:01,472 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-10-29 12:11:01,472 INFO L274 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-10-29 12:11:01,472 INFO L274 CegarLoopResult]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2020-10-29 12:11:01,472 INFO L274 CegarLoopResult]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2020-10-29 12:11:01,472 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (and (= |id_#in~x| id_~x) (not (= |id_#in~x| 0))) [2020-10-29 12:11:01,473 INFO L277 CegarLoopResult]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2020-10-29 12:11:01,473 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-29 12:11:01,473 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-29 12:11:01,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:11:01 BoogieIcfgContainer [2020-10-29 12:11:01,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 12:11:01,481 INFO L168 Benchmark]: Toolchain (without parser) took 11786.56 ms. Allocated memory was 161.5 MB in the beginning and 289.4 MB in the end (delta: 127.9 MB). Free memory was 120.9 MB in the beginning and 214.8 MB in the end (delta: -93.9 MB). Peak memory consumption was 34.5 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:01,482 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 12:11:01,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.02 ms. Allocated memory is still 161.5 MB. Free memory was 120.3 MB in the beginning and 111.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:01,483 INFO L168 Benchmark]: Boogie Preprocessor took 36.07 ms. Allocated memory is still 161.5 MB. Free memory was 111.2 MB in the beginning and 109.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:01,484 INFO L168 Benchmark]: RCFGBuilder took 400.61 ms. Allocated memory is still 161.5 MB. Free memory was 109.8 MB in the beginning and 133.7 MB in the end (delta: -23.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:01,485 INFO L168 Benchmark]: TraceAbstraction took 11049.46 ms. Allocated memory was 161.5 MB in the beginning and 289.4 MB in the end (delta: 127.9 MB). Free memory was 133.2 MB in the beginning and 214.8 MB in the end (delta: -81.6 MB). Peak memory consumption was 46.9 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:01,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.02 ms. Allocated memory is still 161.5 MB. Free memory was 120.3 MB in the beginning and 111.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.07 ms. Allocated memory is still 161.5 MB. Free memory was 111.2 MB in the beginning and 109.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 400.61 ms. Allocated memory is still 161.5 MB. Free memory was 109.8 MB in the beginning and 133.7 MB in the end (delta: -23.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11049.46 ms. Allocated memory was 161.5 MB in the beginning and 289.4 MB in the end (delta: 127.9 MB). Free memory was 133.2 MB in the beginning and 214.8 MB in the end (delta: -81.6 MB). Peak memory consumption was 46.9 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 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.5s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 245 SDslu, 240 SDs, 0 SdLazy, 711 SolverSat, 194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 25 PreInvPairs, 25 NumberOfFragments, 48 HoareAnnotationTreeSize, 25 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 885 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 32910 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 138/294 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...