/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:52:30,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:52:30,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:52:30,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:52:30,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:52:30,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:52:30,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:52:30,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:52:30,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:52:30,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:52:30,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:52:30,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:52:30,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:52:30,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:52:30,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:52:30,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:52:30,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:52:30,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:52:30,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:52:30,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:52:30,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:52:30,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:52:30,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:52:30,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:52:30,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:52:30,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:52:30,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:52:30,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:52:30,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:52:30,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:52:30,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:52:30,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:52:30,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:52:30,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:52:30,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:52:30,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:52:30,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:52:30,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:52:30,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:52:30,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:52:30,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:52:30,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:52:30,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:52:30,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:52:30,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:52:30,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:52:30,356 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:52:30,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:52:30,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:52:30,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:52:30,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:52:30,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:52:30,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:52:30,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:52:30,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:52:30,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:52:30,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:52:30,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:52:30,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:52:30,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:52:30,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:52:30,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:52:30,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:52:30,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:52:30,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:52:30,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:52:30,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:52:30,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:52:30,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:52:30,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:52:30,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:52:30,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:52:30,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:52:30,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:52:30,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:52:30,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:52:30,774 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:52:30,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2020-10-28 14:52:30,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/047630774/573f4dbc590b460c87f1b70dfa5345c1/FLAG434b7ae13 [2020-10-28 14:52:31,494 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:52:31,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_10.c [2020-10-28 14:52:31,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/047630774/573f4dbc590b460c87f1b70dfa5345c1/FLAG434b7ae13 [2020-10-28 14:52:31,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/047630774/573f4dbc590b460c87f1b70dfa5345c1 [2020-10-28 14:52:31,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:52:31,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:52:31,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:52:31,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:52:31,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:52:31,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:52:31" (1/1) ... [2020-10-28 14:52:31,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7bc089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:31, skipping insertion in model container [2020-10-28 14:52:31,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:52:31" (1/1) ... [2020-10-28 14:52:31,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:52:31,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:52:32,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:52:32,187 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:52:32,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:52:32,236 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:52:32,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:32 WrapperNode [2020-10-28 14:52:32,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:52:32,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:52:32,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:52:32,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:52:32,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:32" (1/1) ... [2020-10-28 14:52:32,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:32" (1/1) ... [2020-10-28 14:52:32,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:32" (1/1) ... [2020-10-28 14:52:32,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:32" (1/1) ... [2020-10-28 14:52:32,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:32" (1/1) ... [2020-10-28 14:52:32,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:32" (1/1) ... [2020-10-28 14:52:32,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:32" (1/1) ... [2020-10-28 14:52:32,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:52:32,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:52:32,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:52:32,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:52:32,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:52:32,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:52:32,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:52:32,378 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:52:32,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:52:32,378 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:52:32,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:52:32,379 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:52:32,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:52:32,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:52:32,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:52:32,956 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:52:32,957 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:52:32,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:52:32 BoogieIcfgContainer [2020-10-28 14:52:32,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:52:32,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:52:32,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:52:32,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:52:32,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:52:31" (1/3) ... [2020-10-28 14:52:32,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bb66b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:52:32, skipping insertion in model container [2020-10-28 14:52:32,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:52:32" (2/3) ... [2020-10-28 14:52:32,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bb66b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:52:32, skipping insertion in model container [2020-10-28 14:52:32,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:52:32" (3/3) ... [2020-10-28 14:52:32,968 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-10-28 14:52:32,980 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:52:32,985 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:52:32,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:52:33,026 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:52:33,027 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:52:33,027 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:52:33,027 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:52:33,027 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:52:33,027 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:52:33,027 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:52:33,028 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:52:33,045 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-28 14:52:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:52:33,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:33,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:33,052 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:33,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:33,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1724318403, now seen corresponding path program 1 times [2020-10-28 14:52:33,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:33,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555605962] [2020-10-28 14:52:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:33,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:33,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:52:33,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-28 14:52:33,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:33,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 14:52:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:52:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:52:33,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:33,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:33,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:33,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:52:33,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:33,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:33,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:33,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:33,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555605962] [2020-10-28 14:52:33,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:33,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:33,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724497911] [2020-10-28 14:52:33,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:33,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:33,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:33,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:33,672 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-10-28 14:52:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:34,114 INFO L93 Difference]: Finished difference Result 92 states and 157 transitions. [2020-10-28 14:52:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:34,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-28 14:52:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:34,141 INFO L225 Difference]: With dead ends: 92 [2020-10-28 14:52:34,141 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 14:52:34,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 14:52:34,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2020-10-28 14:52:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 14:52:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-10-28 14:52:34,198 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 22 [2020-10-28 14:52:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:34,199 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-10-28 14:52:34,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-10-28 14:52:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:52:34,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:34,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:34,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:52:34,201 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:34,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1559531643, now seen corresponding path program 1 times [2020-10-28 14:52:34,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:34,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078338399] [2020-10-28 14:52:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:34,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:34,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:52:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 14:52:34,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:34,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 14:52:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:34,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:34,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:34,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:34,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:34,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:52:34,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:34,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:34,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078338399] [2020-10-28 14:52:34,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:34,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:34,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217337217] [2020-10-28 14:52:34,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:34,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:34,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:34,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:34,445 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 4 states. [2020-10-28 14:52:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:34,655 INFO L93 Difference]: Finished difference Result 119 states and 215 transitions. [2020-10-28 14:52:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:34,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-28 14:52:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:34,658 INFO L225 Difference]: With dead ends: 119 [2020-10-28 14:52:34,658 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 14:52:34,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:34,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 14:52:34,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-28 14:52:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 14:52:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 127 transitions. [2020-10-28 14:52:34,674 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 127 transitions. Word has length 22 [2020-10-28 14:52:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:34,674 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 127 transitions. [2020-10-28 14:52:34,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 127 transitions. [2020-10-28 14:52:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:52:34,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:34,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:34,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:52:34,677 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:34,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1907654547, now seen corresponding path program 1 times [2020-10-28 14:52:34,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:34,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761058509] [2020-10-28 14:52:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:34,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:34,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:52:34,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:34,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-28 14:52:34,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:34,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:34,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:34,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:52:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:34,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:35,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:35,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:35,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:35,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:35,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:52:35,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:35,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:35,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761058509] [2020-10-28 14:52:35,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:35,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:35,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518927370] [2020-10-28 14:52:35,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:35,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:35,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:35,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:35,084 INFO L87 Difference]: Start difference. First operand 72 states and 127 transitions. Second operand 4 states. [2020-10-28 14:52:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:35,259 INFO L93 Difference]: Finished difference Result 200 states and 364 transitions. [2020-10-28 14:52:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:35,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:52:35,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:35,261 INFO L225 Difference]: With dead ends: 200 [2020-10-28 14:52:35,262 INFO L226 Difference]: Without dead ends: 134 [2020-10-28 14:52:35,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:35,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-28 14:52:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-28 14:52:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-28 14:52:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 238 transitions. [2020-10-28 14:52:35,279 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 238 transitions. Word has length 23 [2020-10-28 14:52:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:35,280 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 238 transitions. [2020-10-28 14:52:35,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 238 transitions. [2020-10-28 14:52:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:52:35,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:35,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:35,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:52:35,282 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:35,285 INFO L82 PathProgramCache]: Analyzing trace with hash -896537297, now seen corresponding path program 1 times [2020-10-28 14:52:35,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:35,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806222790] [2020-10-28 14:52:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:35,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:35,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:52:35,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:35,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 14:52:35,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:35,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:52:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:52:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:35,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:35,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:35,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:35,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:35,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:35,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:52:35,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:35,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:35,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:35,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:35,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:35,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:35,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806222790] [2020-10-28 14:52:35,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:35,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:35,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379754801] [2020-10-28 14:52:35,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:35,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:35,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:35,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:35,537 INFO L87 Difference]: Start difference. First operand 133 states and 238 transitions. Second operand 4 states. [2020-10-28 14:52:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:35,719 INFO L93 Difference]: Finished difference Result 173 states and 309 transitions. [2020-10-28 14:52:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:35,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:52:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:35,723 INFO L225 Difference]: With dead ends: 173 [2020-10-28 14:52:35,723 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 14:52:35,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 14:52:35,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 133. [2020-10-28 14:52:35,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-28 14:52:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 236 transitions. [2020-10-28 14:52:35,739 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 236 transitions. Word has length 23 [2020-10-28 14:52:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:35,739 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 236 transitions. [2020-10-28 14:52:35,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:35,739 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 236 transitions. [2020-10-28 14:52:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:52:35,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:35,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:35,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:52:35,741 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:35,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:35,742 INFO L82 PathProgramCache]: Analyzing trace with hash 998870152, now seen corresponding path program 1 times [2020-10-28 14:52:35,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:35,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936130338] [2020-10-28 14:52:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:35,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:35,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:35,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:35,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:35,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 14:52:35,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:35,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:52:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:52:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:35,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:35,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:35,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:35,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:52:35,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:35,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:35,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936130338] [2020-10-28 14:52:35,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:35,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:35,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297262974] [2020-10-28 14:52:35,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:35,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:35,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:35,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:35,927 INFO L87 Difference]: Start difference. First operand 133 states and 236 transitions. Second operand 4 states. [2020-10-28 14:52:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:36,097 INFO L93 Difference]: Finished difference Result 249 states and 447 transitions. [2020-10-28 14:52:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:36,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 14:52:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:36,100 INFO L225 Difference]: With dead ends: 249 [2020-10-28 14:52:36,100 INFO L226 Difference]: Without dead ends: 246 [2020-10-28 14:52:36,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-28 14:52:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 181. [2020-10-28 14:52:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-28 14:52:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 320 transitions. [2020-10-28 14:52:36,122 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 320 transitions. Word has length 24 [2020-10-28 14:52:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:36,123 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 320 transitions. [2020-10-28 14:52:36,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 320 transitions. [2020-10-28 14:52:36,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:52:36,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:36,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:36,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:52:36,127 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:36,128 INFO L82 PathProgramCache]: Analyzing trace with hash -12247098, now seen corresponding path program 1 times [2020-10-28 14:52:36,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:36,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165246060] [2020-10-28 14:52:36,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:36,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:36,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:36,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:36,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:36,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-28 14:52:36,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:36,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:52:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:36,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:36,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:36,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:36,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:36,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:36,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:52:36,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:36,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:36,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:36,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:52:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:36,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165246060] [2020-10-28 14:52:36,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:36,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:36,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020560564] [2020-10-28 14:52:36,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:36,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:36,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:36,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:36,522 INFO L87 Difference]: Start difference. First operand 181 states and 320 transitions. Second operand 4 states. [2020-10-28 14:52:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:36,740 INFO L93 Difference]: Finished difference Result 429 states and 767 transitions. [2020-10-28 14:52:36,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:36,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 14:52:36,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:36,743 INFO L225 Difference]: With dead ends: 429 [2020-10-28 14:52:36,744 INFO L226 Difference]: Without dead ends: 254 [2020-10-28 14:52:36,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:36,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-28 14:52:36,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2020-10-28 14:52:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-28 14:52:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 444 transitions. [2020-10-28 14:52:36,778 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 444 transitions. Word has length 24 [2020-10-28 14:52:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:36,779 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 444 transitions. [2020-10-28 14:52:36,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 444 transitions. [2020-10-28 14:52:36,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:52:36,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:36,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:36,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:52:36,787 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:36,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:36,787 INFO L82 PathProgramCache]: Analyzing trace with hash 906833176, now seen corresponding path program 1 times [2020-10-28 14:52:36,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:36,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510298942] [2020-10-28 14:52:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:36,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:36,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:36,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:37,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:37,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:52:37,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:52:37,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 14:52:37,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:37,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 14:52:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:52:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:37,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:37,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:37,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:37,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:37,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:52:37,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:37,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 20 [2020-10-28 14:52:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:37,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510298942] [2020-10-28 14:52:37,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:37,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:37,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407222019] [2020-10-28 14:52:37,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:37,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:37,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:37,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:37,144 INFO L87 Difference]: Start difference. First operand 253 states and 444 transitions. Second operand 4 states. [2020-10-28 14:52:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:37,342 INFO L93 Difference]: Finished difference Result 469 states and 831 transitions. [2020-10-28 14:52:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:37,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-28 14:52:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:37,346 INFO L225 Difference]: With dead ends: 469 [2020-10-28 14:52:37,347 INFO L226 Difference]: Without dead ends: 466 [2020-10-28 14:52:37,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-28 14:52:37,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 353. [2020-10-28 14:52:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-28 14:52:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 612 transitions. [2020-10-28 14:52:37,380 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 612 transitions. Word has length 25 [2020-10-28 14:52:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:37,381 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 612 transitions. [2020-10-28 14:52:37,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 612 transitions. [2020-10-28 14:52:37,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:52:37,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:37,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:37,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:52:37,392 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:37,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:37,392 INFO L82 PathProgramCache]: Analyzing trace with hash -104284074, now seen corresponding path program 1 times [2020-10-28 14:52:37,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:37,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867670967] [2020-10-28 14:52:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:37,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:37,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:37,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:52:37,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:52:37,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 14:52:37,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:37,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:37,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 14:52:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:37,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:37,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:37,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:37,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:37,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:37,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:52:37,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:37,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:37,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:37,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867670967] [2020-10-28 14:52:37,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:37,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:37,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206591137] [2020-10-28 14:52:37,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:37,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:37,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:37,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:37,699 INFO L87 Difference]: Start difference. First operand 353 states and 612 transitions. Second operand 4 states. [2020-10-28 14:52:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:37,907 INFO L93 Difference]: Finished difference Result 837 states and 1463 transitions. [2020-10-28 14:52:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:37,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-28 14:52:37,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:37,913 INFO L225 Difference]: With dead ends: 837 [2020-10-28 14:52:37,914 INFO L226 Difference]: Without dead ends: 490 [2020-10-28 14:52:37,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:37,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-28 14:52:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 489. [2020-10-28 14:52:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-28 14:52:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 840 transitions. [2020-10-28 14:52:37,945 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 840 transitions. Word has length 25 [2020-10-28 14:52:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:37,945 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 840 transitions. [2020-10-28 14:52:37,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 840 transitions. [2020-10-28 14:52:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:52:37,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:37,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:37,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:52:37,947 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:37,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:37,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1946302509, now seen corresponding path program 1 times [2020-10-28 14:52:37,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:37,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65689334] [2020-10-28 14:52:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:37,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:37,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:37,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:38,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:38,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:52:38,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:38,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-28 14:52:38,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:38,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:52:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:52:38,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:38,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:38,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:38,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:38,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:38,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:52:38,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:38,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:38,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:38,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65689334] [2020-10-28 14:52:38,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:38,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:38,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394648024] [2020-10-28 14:52:38,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:38,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:38,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:38,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:38,532 INFO L87 Difference]: Start difference. First operand 489 states and 840 transitions. Second operand 4 states. [2020-10-28 14:52:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:38,741 INFO L93 Difference]: Finished difference Result 893 states and 1547 transitions. [2020-10-28 14:52:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:38,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 14:52:38,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:38,747 INFO L225 Difference]: With dead ends: 893 [2020-10-28 14:52:38,747 INFO L226 Difference]: Without dead ends: 890 [2020-10-28 14:52:38,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-10-28 14:52:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 697. [2020-10-28 14:52:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-28 14:52:38,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1176 transitions. [2020-10-28 14:52:38,778 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1176 transitions. Word has length 26 [2020-10-28 14:52:38,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:38,780 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1176 transitions. [2020-10-28 14:52:38,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1176 transitions. [2020-10-28 14:52:38,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:52:38,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:38,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:38,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:52:38,783 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:38,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:38,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1337547537, now seen corresponding path program 1 times [2020-10-28 14:52:38,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:38,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496003779] [2020-10-28 14:52:38,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:38,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:52:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-28 14:52:39,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:39,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:52:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:39,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:39,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:39,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:39,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:52:39,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:39,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:39,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:39,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496003779] [2020-10-28 14:52:39,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:39,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:39,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586010063] [2020-10-28 14:52:39,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:39,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:39,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:39,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:39,241 INFO L87 Difference]: Start difference. First operand 697 states and 1176 transitions. Second operand 4 states. [2020-10-28 14:52:39,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:39,431 INFO L93 Difference]: Finished difference Result 1645 states and 2795 transitions. [2020-10-28 14:52:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:39,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 14:52:39,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:39,437 INFO L225 Difference]: With dead ends: 1645 [2020-10-28 14:52:39,437 INFO L226 Difference]: Without dead ends: 954 [2020-10-28 14:52:39,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:39,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-10-28 14:52:39,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 953. [2020-10-28 14:52:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-10-28 14:52:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1592 transitions. [2020-10-28 14:52:39,477 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1592 transitions. Word has length 26 [2020-10-28 14:52:39,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:39,477 INFO L481 AbstractCegarLoop]: Abstraction has 953 states and 1592 transitions. [2020-10-28 14:52:39,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:39,477 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1592 transitions. [2020-10-28 14:52:39,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:52:39,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:39,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:39,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:52:39,481 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:39,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:39,481 INFO L82 PathProgramCache]: Analyzing trace with hash -199184957, now seen corresponding path program 1 times [2020-10-28 14:52:39,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:39,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623620908] [2020-10-28 14:52:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:40,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:40,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:52:40,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:52:40,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-28 14:52:40,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:40,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:40,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:40,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 14:52:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:52:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:40,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:40,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:40,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:40,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:40,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:52:40,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:40,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:52:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:40,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623620908] [2020-10-28 14:52:40,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:40,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:40,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613333913] [2020-10-28 14:52:40,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:40,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:40,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:40,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:40,148 INFO L87 Difference]: Start difference. First operand 953 states and 1592 transitions. Second operand 4 states. [2020-10-28 14:52:40,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:40,382 INFO L93 Difference]: Finished difference Result 1709 states and 2875 transitions. [2020-10-28 14:52:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:40,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-28 14:52:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:40,392 INFO L225 Difference]: With dead ends: 1709 [2020-10-28 14:52:40,392 INFO L226 Difference]: Without dead ends: 1706 [2020-10-28 14:52:40,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-10-28 14:52:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1385. [2020-10-28 14:52:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1385 states. [2020-10-28 14:52:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 2264 transitions. [2020-10-28 14:52:40,468 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 2264 transitions. Word has length 27 [2020-10-28 14:52:40,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:40,469 INFO L481 AbstractCegarLoop]: Abstraction has 1385 states and 2264 transitions. [2020-10-28 14:52:40,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 2264 transitions. [2020-10-28 14:52:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:52:40,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:40,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:40,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:52:40,472 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:40,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:40,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1210302207, now seen corresponding path program 1 times [2020-10-28 14:52:40,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:40,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901187057] [2020-10-28 14:52:40,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:40,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:41,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:41,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:52:41,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:52:41,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-28 14:52:41,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:41,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:52:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:41,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:41,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:41,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:41,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:41,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:41,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:52:41,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:41,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:41,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901187057] [2020-10-28 14:52:41,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:41,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:41,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322111741] [2020-10-28 14:52:41,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:41,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:41,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:41,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:41,159 INFO L87 Difference]: Start difference. First operand 1385 states and 2264 transitions. Second operand 4 states. [2020-10-28 14:52:41,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:41,412 INFO L93 Difference]: Finished difference Result 2094 states and 3419 transitions. [2020-10-28 14:52:41,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:41,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-28 14:52:41,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:41,423 INFO L225 Difference]: With dead ends: 2094 [2020-10-28 14:52:41,423 INFO L226 Difference]: Without dead ends: 1419 [2020-10-28 14:52:41,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-28 14:52:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1418. [2020-10-28 14:52:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-10-28 14:52:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2280 transitions. [2020-10-28 14:52:41,500 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2280 transitions. Word has length 27 [2020-10-28 14:52:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:41,500 INFO L481 AbstractCegarLoop]: Abstraction has 1418 states and 2280 transitions. [2020-10-28 14:52:41,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:41,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2280 transitions. [2020-10-28 14:52:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:52:41,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:41,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:41,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:52:41,504 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:41,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:41,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1804801411, now seen corresponding path program 1 times [2020-10-28 14:52:41,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:41,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615565598] [2020-10-28 14:52:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:41,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:41,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:41,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:52:41,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:41,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-28 14:52:41,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:41,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 14:52:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:41,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:41,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:41,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:41,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:41,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:52:41,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:41,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:41,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:41,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:41,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:41,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:41,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615565598] [2020-10-28 14:52:41,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:41,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:41,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918145307] [2020-10-28 14:52:41,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:41,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:41,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:41,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:41,878 INFO L87 Difference]: Start difference. First operand 1418 states and 2280 transitions. Second operand 4 states. [2020-10-28 14:52:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:42,119 INFO L93 Difference]: Finished difference Result 3278 states and 5291 transitions. [2020-10-28 14:52:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:42,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-28 14:52:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:42,130 INFO L225 Difference]: With dead ends: 3278 [2020-10-28 14:52:42,130 INFO L226 Difference]: Without dead ends: 1899 [2020-10-28 14:52:42,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-10-28 14:52:42,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1898. [2020-10-28 14:52:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2020-10-28 14:52:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 3016 transitions. [2020-10-28 14:52:42,230 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 3016 transitions. Word has length 27 [2020-10-28 14:52:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:42,230 INFO L481 AbstractCegarLoop]: Abstraction has 1898 states and 3016 transitions. [2020-10-28 14:52:42,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 3016 transitions. [2020-10-28 14:52:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:52:42,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:42,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:42,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:52:42,234 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:42,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:42,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1400793820, now seen corresponding path program 1 times [2020-10-28 14:52:42,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:42,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781042022] [2020-10-28 14:52:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:42,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:42,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:42,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:42,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:52:42,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:52:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-28 14:52:42,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:42,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:42,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 14:52:42,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:52:42,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:42,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:42,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:42,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:42,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:52:42,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:42,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:42,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781042022] [2020-10-28 14:52:42,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:42,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:42,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295164537] [2020-10-28 14:52:42,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:42,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:42,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:42,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:42,920 INFO L87 Difference]: Start difference. First operand 1898 states and 3016 transitions. Second operand 4 states. [2020-10-28 14:52:43,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:43,189 INFO L93 Difference]: Finished difference Result 3310 states and 5291 transitions. [2020-10-28 14:52:43,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:43,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-28 14:52:43,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:43,207 INFO L225 Difference]: With dead ends: 3310 [2020-10-28 14:52:43,207 INFO L226 Difference]: Without dead ends: 3307 [2020-10-28 14:52:43,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2020-10-28 14:52:43,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2794. [2020-10-28 14:52:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2020-10-28 14:52:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 4328 transitions. [2020-10-28 14:52:43,337 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 4328 transitions. Word has length 28 [2020-10-28 14:52:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:43,337 INFO L481 AbstractCegarLoop]: Abstraction has 2794 states and 4328 transitions. [2020-10-28 14:52:43,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:43,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 4328 transitions. [2020-10-28 14:52:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:52:43,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:43,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:43,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:52:43,343 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash 389676570, now seen corresponding path program 1 times [2020-10-28 14:52:43,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:43,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839733503] [2020-10-28 14:52:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:43,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:43,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:43,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:43,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:52:43,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:52:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-28 14:52:43,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:43,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 14:52:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:43,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:43,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:43,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:43,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:43,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:43,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:43,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:43,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:43,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:43,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839733503] [2020-10-28 14:52:43,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:43,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:43,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329424863] [2020-10-28 14:52:43,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:43,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:43,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:43,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:43,992 INFO L87 Difference]: Start difference. First operand 2794 states and 4328 transitions. Second operand 4 states. [2020-10-28 14:52:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:44,217 INFO L93 Difference]: Finished difference Result 4142 states and 6379 transitions. [2020-10-28 14:52:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:44,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-28 14:52:44,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:44,235 INFO L225 Difference]: With dead ends: 4142 [2020-10-28 14:52:44,235 INFO L226 Difference]: Without dead ends: 2795 [2020-10-28 14:52:44,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2020-10-28 14:52:44,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2794. [2020-10-28 14:52:44,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2020-10-28 14:52:44,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 4232 transitions. [2020-10-28 14:52:44,366 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 4232 transitions. Word has length 28 [2020-10-28 14:52:44,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:44,366 INFO L481 AbstractCegarLoop]: Abstraction has 2794 states and 4232 transitions. [2020-10-28 14:52:44,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:44,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 4232 transitions. [2020-10-28 14:52:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:52:44,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:44,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:44,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:52:44,372 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:44,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:44,373 INFO L82 PathProgramCache]: Analyzing trace with hash -427971880, now seen corresponding path program 1 times [2020-10-28 14:52:44,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:44,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409576681] [2020-10-28 14:52:44,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:44,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:44,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:44,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:44,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:52:44,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-28 14:52:44,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:44,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:52:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:44,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:44,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:44,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:44,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:52:44,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:44,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:44,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409576681] [2020-10-28 14:52:44,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:44,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:44,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655498211] [2020-10-28 14:52:44,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:44,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:44,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:44,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:44,838 INFO L87 Difference]: Start difference. First operand 2794 states and 4232 transitions. Second operand 4 states. [2020-10-28 14:52:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:45,045 INFO L93 Difference]: Finished difference Result 4142 states and 6235 transitions. [2020-10-28 14:52:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:45,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-28 14:52:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:45,060 INFO L225 Difference]: With dead ends: 4142 [2020-10-28 14:52:45,060 INFO L226 Difference]: Without dead ends: 2795 [2020-10-28 14:52:45,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2020-10-28 14:52:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2794. [2020-10-28 14:52:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2020-10-28 14:52:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 4136 transitions. [2020-10-28 14:52:45,175 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 4136 transitions. Word has length 28 [2020-10-28 14:52:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:45,175 INFO L481 AbstractCegarLoop]: Abstraction has 2794 states and 4136 transitions. [2020-10-28 14:52:45,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:45,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 4136 transitions. [2020-10-28 14:52:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:52:45,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:45,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:45,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:52:45,181 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:45,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1872850710, now seen corresponding path program 1 times [2020-10-28 14:52:45,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:45,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582404756] [2020-10-28 14:52:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:45,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:45,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:45,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:52:45,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:52:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 14:52:45,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:45,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 14:52:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:45,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:45,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:45,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:45,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:45,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:45,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:45,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:45,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:45,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582404756] [2020-10-28 14:52:45,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:45,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:45,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741611123] [2020-10-28 14:52:45,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:45,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:45,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:45,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:45,364 INFO L87 Difference]: Start difference. First operand 2794 states and 4136 transitions. Second operand 4 states. [2020-10-28 14:52:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:45,604 INFO L93 Difference]: Finished difference Result 4174 states and 6155 transitions. [2020-10-28 14:52:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:45,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-28 14:52:45,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:45,620 INFO L225 Difference]: With dead ends: 4174 [2020-10-28 14:52:45,620 INFO L226 Difference]: Without dead ends: 2827 [2020-10-28 14:52:45,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-10-28 14:52:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2826. [2020-10-28 14:52:45,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-10-28 14:52:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4104 transitions. [2020-10-28 14:52:45,738 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4104 transitions. Word has length 28 [2020-10-28 14:52:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:45,739 INFO L481 AbstractCegarLoop]: Abstraction has 2826 states and 4104 transitions. [2020-10-28 14:52:45,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4104 transitions. [2020-10-28 14:52:45,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:52:45,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:45,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:45,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:52:45,744 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:45,745 INFO L82 PathProgramCache]: Analyzing trace with hash 592987032, now seen corresponding path program 1 times [2020-10-28 14:52:45,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:45,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148278533] [2020-10-28 14:52:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:45,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:45,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:52:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 14:52:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:45,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 14:52:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:45,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:45,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:45,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:45,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:45,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:45,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:45,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148278533] [2020-10-28 14:52:45,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:45,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:45,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534194897] [2020-10-28 14:52:45,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:45,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:45,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:45,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:45,886 INFO L87 Difference]: Start difference. First operand 2826 states and 4104 transitions. Second operand 4 states. [2020-10-28 14:52:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:46,157 INFO L93 Difference]: Finished difference Result 6478 states and 9419 transitions. [2020-10-28 14:52:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:46,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-28 14:52:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:46,176 INFO L225 Difference]: With dead ends: 6478 [2020-10-28 14:52:46,176 INFO L226 Difference]: Without dead ends: 3723 [2020-10-28 14:52:46,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2020-10-28 14:52:46,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3722. [2020-10-28 14:52:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2020-10-28 14:52:46,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5320 transitions. [2020-10-28 14:52:46,330 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5320 transitions. Word has length 28 [2020-10-28 14:52:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:46,330 INFO L481 AbstractCegarLoop]: Abstraction has 3722 states and 5320 transitions. [2020-10-28 14:52:46,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:46,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5320 transitions. [2020-10-28 14:52:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 14:52:46,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:46,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:46,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 14:52:46,367 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:46,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:46,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1805702990, now seen corresponding path program 1 times [2020-10-28 14:52:46,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:46,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402231111] [2020-10-28 14:52:46,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:46,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:46,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:46,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:46,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 14:52:46,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:52:46,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 14:52:46,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:46,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:46,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:46,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 14:52:46,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:52:46,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:46,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:46,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:46,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:46,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:46,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:46,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:46,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:46,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:46,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402231111] [2020-10-28 14:52:46,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:46,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:46,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545846026] [2020-10-28 14:52:46,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:46,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:46,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:46,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:46,559 INFO L87 Difference]: Start difference. First operand 3722 states and 5320 transitions. Second operand 4 states. [2020-10-28 14:52:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:46,859 INFO L93 Difference]: Finished difference Result 6350 states and 9163 transitions. [2020-10-28 14:52:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:46,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-28 14:52:46,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:46,876 INFO L225 Difference]: With dead ends: 6350 [2020-10-28 14:52:46,877 INFO L226 Difference]: Without dead ends: 6347 [2020-10-28 14:52:46,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2020-10-28 14:52:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 5578. [2020-10-28 14:52:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5578 states. [2020-10-28 14:52:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 7752 transitions. [2020-10-28 14:52:47,069 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 7752 transitions. Word has length 29 [2020-10-28 14:52:47,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:47,069 INFO L481 AbstractCegarLoop]: Abstraction has 5578 states and 7752 transitions. [2020-10-28 14:52:47,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 7752 transitions. [2020-10-28 14:52:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 14:52:47,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:47,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:47,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 14:52:47,083 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:47,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1478147056, now seen corresponding path program 1 times [2020-10-28 14:52:47,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:47,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622923112] [2020-10-28 14:52:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:47,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:47,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:47,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:47,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 14:52:47,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:52:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 14:52:47,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:47,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 14:52:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:47,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:47,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:47,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:47,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:47,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:47,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:47,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:47,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622923112] [2020-10-28 14:52:47,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:47,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:47,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45091314] [2020-10-28 14:52:47,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:47,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:47,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:47,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:47,315 INFO L87 Difference]: Start difference. First operand 5578 states and 7752 transitions. Second operand 4 states. [2020-10-28 14:52:47,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:47,643 INFO L93 Difference]: Finished difference Result 12750 states and 17739 transitions. [2020-10-28 14:52:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:47,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-28 14:52:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:47,660 INFO L225 Difference]: With dead ends: 12750 [2020-10-28 14:52:47,660 INFO L226 Difference]: Without dead ends: 7243 [2020-10-28 14:52:47,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:47,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7243 states. [2020-10-28 14:52:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7243 to 7242. [2020-10-28 14:52:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7242 states. [2020-10-28 14:52:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 9864 transitions. [2020-10-28 14:52:48,028 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 9864 transitions. Word has length 29 [2020-10-28 14:52:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:48,029 INFO L481 AbstractCegarLoop]: Abstraction has 7242 states and 9864 transitions. [2020-10-28 14:52:48,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 9864 transitions. [2020-10-28 14:52:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:52:48,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:48,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:48,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 14:52:48,042 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:48,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:48,042 INFO L82 PathProgramCache]: Analyzing trace with hash -135535451, now seen corresponding path program 1 times [2020-10-28 14:52:48,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:48,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153193955] [2020-10-28 14:52:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:48,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:52:48,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-28 14:52:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:48,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 14:52:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:52:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:48,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:48,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:48,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:48,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:48,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:52:48,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:48,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:48,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:48,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153193955] [2020-10-28 14:52:48,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:48,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:48,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991537843] [2020-10-28 14:52:48,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:48,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:48,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:48,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:48,463 INFO L87 Difference]: Start difference. First operand 7242 states and 9864 transitions. Second operand 4 states. [2020-10-28 14:52:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:48,937 INFO L93 Difference]: Finished difference Result 12110 states and 16523 transitions. [2020-10-28 14:52:48,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:48,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-28 14:52:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:48,963 INFO L225 Difference]: With dead ends: 12110 [2020-10-28 14:52:48,965 INFO L226 Difference]: Without dead ends: 12107 [2020-10-28 14:52:48,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:48,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12107 states. [2020-10-28 14:52:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12107 to 11082. [2020-10-28 14:52:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11082 states. [2020-10-28 14:52:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11082 states to 11082 states and 14728 transitions. [2020-10-28 14:52:49,343 INFO L78 Accepts]: Start accepts. Automaton has 11082 states and 14728 transitions. Word has length 30 [2020-10-28 14:52:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:49,343 INFO L481 AbstractCegarLoop]: Abstraction has 11082 states and 14728 transitions. [2020-10-28 14:52:49,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 11082 states and 14728 transitions. [2020-10-28 14:52:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:52:49,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:49,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:49,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 14:52:49,362 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:49,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1146652701, now seen corresponding path program 1 times [2020-10-28 14:52:49,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:49,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324837783] [2020-10-28 14:52:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:49,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:49,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:49,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:49,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:52:49,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:49,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 14:52:49,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:49,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:49,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:49,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 14:52:49,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:49,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:49,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:49,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:49,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:49,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:49,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:49,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:49,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324837783] [2020-10-28 14:52:49,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:49,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:49,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431988545] [2020-10-28 14:52:49,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:49,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:49,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:49,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:49,667 INFO L87 Difference]: Start difference. First operand 11082 states and 14728 transitions. Second operand 4 states. [2020-10-28 14:52:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:50,045 INFO L93 Difference]: Finished difference Result 16462 states and 21707 transitions. [2020-10-28 14:52:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:50,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-28 14:52:50,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:50,071 INFO L225 Difference]: With dead ends: 16462 [2020-10-28 14:52:50,071 INFO L226 Difference]: Without dead ends: 11083 [2020-10-28 14:52:50,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11083 states. [2020-10-28 14:52:50,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11083 to 11082. [2020-10-28 14:52:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11082 states. [2020-10-28 14:52:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11082 states to 11082 states and 14344 transitions. [2020-10-28 14:52:50,390 INFO L78 Accepts]: Start accepts. Automaton has 11082 states and 14344 transitions. Word has length 30 [2020-10-28 14:52:50,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:50,390 INFO L481 AbstractCegarLoop]: Abstraction has 11082 states and 14344 transitions. [2020-10-28 14:52:50,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:50,390 INFO L276 IsEmpty]: Start isEmpty. Operand 11082 states and 14344 transitions. [2020-10-28 14:52:50,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:52:50,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:50,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:50,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 14:52:50,409 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:50,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:50,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1459370853, now seen corresponding path program 1 times [2020-10-28 14:52:50,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:50,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183746490] [2020-10-28 14:52:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:50,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:50,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:50,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:52:50,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:52:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 14:52:50,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:50,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 14:52:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:50,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:50,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:50,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:50,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:50,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:50,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:50,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:50,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183746490] [2020-10-28 14:52:50,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:50,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:50,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088799544] [2020-10-28 14:52:50,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:50,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:50,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:50,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:50,599 INFO L87 Difference]: Start difference. First operand 11082 states and 14344 transitions. Second operand 4 states. [2020-10-28 14:52:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:51,111 INFO L93 Difference]: Finished difference Result 25166 states and 32523 transitions. [2020-10-28 14:52:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:51,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-28 14:52:51,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:51,140 INFO L225 Difference]: With dead ends: 25166 [2020-10-28 14:52:51,140 INFO L226 Difference]: Without dead ends: 14155 [2020-10-28 14:52:51,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14155 states. [2020-10-28 14:52:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14155 to 14154. [2020-10-28 14:52:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14154 states. [2020-10-28 14:52:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14154 states to 14154 states and 17800 transitions. [2020-10-28 14:52:51,717 INFO L78 Accepts]: Start accepts. Automaton has 14154 states and 17800 transitions. Word has length 30 [2020-10-28 14:52:51,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:51,718 INFO L481 AbstractCegarLoop]: Abstraction has 14154 states and 17800 transitions. [2020-10-28 14:52:51,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 14154 states and 17800 transitions. [2020-10-28 14:52:51,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:52:51,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:51,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:51,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 14:52:51,742 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:51,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:51,743 INFO L82 PathProgramCache]: Analyzing trace with hash -717587173, now seen corresponding path program 1 times [2020-10-28 14:52:51,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:51,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190933031] [2020-10-28 14:52:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:51,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:51,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:52,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:52,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:52:52,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-28 14:52:52,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:52,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 14:52:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:52:52,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:52,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:52,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:52,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:52,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:52,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:52,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:52,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:52,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:52,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:52,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190933031] [2020-10-28 14:52:52,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:52,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:52,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401402613] [2020-10-28 14:52:52,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:52,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:52,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:52,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:52,077 INFO L87 Difference]: Start difference. First operand 14154 states and 17800 transitions. Second operand 4 states. [2020-10-28 14:52:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:52,957 INFO L93 Difference]: Finished difference Result 41805 states and 52106 transitions. [2020-10-28 14:52:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:52,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-28 14:52:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:52,990 INFO L225 Difference]: With dead ends: 41805 [2020-10-28 14:52:52,991 INFO L226 Difference]: Without dead ends: 14154 [2020-10-28 14:52:53,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14154 states. [2020-10-28 14:52:53,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14154 to 14154. [2020-10-28 14:52:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14154 states. [2020-10-28 14:52:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14154 states to 14154 states and 16776 transitions. [2020-10-28 14:52:53,633 INFO L78 Accepts]: Start accepts. Automaton has 14154 states and 16776 transitions. Word has length 31 [2020-10-28 14:52:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:53,633 INFO L481 AbstractCegarLoop]: Abstraction has 14154 states and 16776 transitions. [2020-10-28 14:52:53,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 14154 states and 16776 transitions. [2020-10-28 14:52:53,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:52:53,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:53,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:53,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 14:52:53,664 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:53,665 INFO L82 PathProgramCache]: Analyzing trace with hash 293530077, now seen corresponding path program 1 times [2020-10-28 14:52:53,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:53,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982779149] [2020-10-28 14:52:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:53,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:53,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:53,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:52:53,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-28 14:52:53,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:53,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:53,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:53,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 14:52:53,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:52:53,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:53,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:53,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:53,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:53,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:53,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:53,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:52:53,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:53,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:52:53,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982779149] [2020-10-28 14:52:53,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:52:53,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:52:53,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080042030] [2020-10-28 14:52:53,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:52:53,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:53,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:52:53,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:52:53,983 INFO L87 Difference]: Start difference. First operand 14154 states and 16776 transitions. Second operand 4 states. [2020-10-28 14:52:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:54,352 INFO L93 Difference]: Finished difference Result 14154 states and 16776 transitions. [2020-10-28 14:52:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:52:54,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-28 14:52:54,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:54,353 INFO L225 Difference]: With dead ends: 14154 [2020-10-28 14:52:54,353 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 14:52:54,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:52:54,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 14:52:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 14:52:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 14:52:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 14:52:54,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-10-28 14:52:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:54,381 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 14:52:54,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:52:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 14:52:54,381 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 14:52:54,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 14:52:54,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 14:53:12,418 WARN L193 SmtUtils]: Spent 17.93 s on a formula simplification. DAG size of input: 2634 DAG size of output: 33 [2020-10-28 14:53:12,465 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 14:53:12,466 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 14:53:12,466 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 14:53:12,466 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 14:53:12,466 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:53:12,466 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|)) [2020-10-28 14:53:12,466 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:53:12,466 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:53:12,467 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 14:53:12,467 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 14:53:12,467 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:53:12,467 INFO L274 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-10-28 14:53:12,468 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 6 165) no Hoare annotation was computed. [2020-10-28 14:53:12,468 INFO L274 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-10-28 14:53:12,468 INFO L274 CegarLoopResult]: For program point L110-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,468 INFO L274 CegarLoopResult]: For program point L135-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,468 INFO L274 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-10-28 14:53:12,468 INFO L274 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-10-28 14:53:12,468 INFO L277 CegarLoopResult]: At program point L161(lines 7 165) the Hoare annotation is: true [2020-10-28 14:53:12,468 INFO L274 CegarLoopResult]: For program point L120-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,468 INFO L274 CegarLoopResult]: For program point L145-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,468 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 6 165) no Hoare annotation was computed. [2020-10-28 14:53:12,469 INFO L274 CegarLoopResult]: For program point L104-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,469 INFO L274 CegarLoopResult]: For program point L96-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,469 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 6 165) the Hoare annotation is: true [2020-10-28 14:53:12,469 INFO L274 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-10-28 14:53:12,469 INFO L274 CegarLoopResult]: For program point L88-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,469 INFO L274 CegarLoopResult]: For program point L146(line 146) no Hoare annotation was computed. [2020-10-28 14:53:12,469 INFO L274 CegarLoopResult]: For program point L80-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,469 INFO L274 CegarLoopResult]: For program point L72-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,469 INFO L274 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-10-28 14:53:12,469 INFO L274 CegarLoopResult]: For program point L130-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,470 INFO L277 CegarLoopResult]: At program point L155-1(lines 41 160) the Hoare annotation is: true [2020-10-28 14:53:12,470 INFO L274 CegarLoopResult]: For program point L131(line 131) no Hoare annotation was computed. [2020-10-28 14:53:12,470 INFO L274 CegarLoopResult]: For program point L156(line 156) no Hoare annotation was computed. [2020-10-28 14:53:12,470 INFO L270 CegarLoopResult]: At program point L156-1(lines 7 165) the Hoare annotation is: false [2020-10-28 14:53:12,470 INFO L274 CegarLoopResult]: For program point L115-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,470 INFO L274 CegarLoopResult]: For program point L140-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,470 INFO L274 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-10-28 14:53:12,470 INFO L274 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-10-28 14:53:12,470 INFO L274 CegarLoopResult]: For program point L100-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,470 INFO L274 CegarLoopResult]: For program point L125-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,471 INFO L274 CegarLoopResult]: For program point L92-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,471 INFO L274 CegarLoopResult]: For program point L150-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,472 INFO L274 CegarLoopResult]: For program point L84-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,472 INFO L274 CegarLoopResult]: For program point L43(lines 43 45) no Hoare annotation was computed. [2020-10-28 14:53:12,472 INFO L274 CegarLoopResult]: For program point L76-1(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,472 INFO L274 CegarLoopResult]: For program point L68(lines 68 70) no Hoare annotation was computed. [2020-10-28 14:53:12,472 INFO L274 CegarLoopResult]: For program point L68-2(lines 41 160) no Hoare annotation was computed. [2020-10-28 14:53:12,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:53:12 BoogieIcfgContainer [2020-10-28 14:53:12,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:53:12,487 INFO L168 Benchmark]: Toolchain (without parser) took 40625.57 ms. Allocated memory was 155.2 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 129.6 MB in the beginning and 1.1 GB in the end (delta: -932.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2020-10-28 14:53:12,488 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:53:12,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.87 ms. Allocated memory is still 155.2 MB. Free memory was 129.0 MB in the beginning and 118.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:53:12,489 INFO L168 Benchmark]: Boogie Preprocessor took 47.58 ms. Allocated memory is still 155.2 MB. Free memory was 118.9 MB in the beginning and 117.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:53:12,490 INFO L168 Benchmark]: RCFGBuilder took 672.30 ms. Allocated memory is still 155.2 MB. Free memory was 117.1 MB in the beginning and 133.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:53:12,497 INFO L168 Benchmark]: TraceAbstraction took 39524.86 ms. Allocated memory was 155.2 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 133.1 MB in the beginning and 1.1 GB in the end (delta: -928.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2020-10-28 14:53:12,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 364.87 ms. Allocated memory is still 155.2 MB. Free memory was 129.0 MB in the beginning and 118.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.58 ms. Allocated memory is still 155.2 MB. Free memory was 118.9 MB in the beginning and 117.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 672.30 ms. Allocated memory is still 155.2 MB. Free memory was 117.1 MB in the beginning and 133.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 39524.86 ms. Allocated memory was 155.2 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 133.1 MB in the beginning and 1.1 GB in the end (delta: -928.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.3s, OverallIterations: 25, TraceHistogramMax: 1, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 18.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2106 SDtfs, 3124 SDslu, 193 SDs, 0 SdLazy, 1521 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14154occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 25 MinimizatonAttempts, 3071 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 32 PreInvPairs, 1059 NumberOfFragments, 38 HoareAnnotationTreeSize, 32 FomulaSimplifications, 26846242 FormulaSimplificationTreeSizeReduction, 18.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 671 NumberOfCodeBlocks, 671 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 646 ConstructedInterpolants, 0 QuantifiedInterpolants, 51044 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 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...