/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/num_conversion_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:14:58,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:14:58,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:14:59,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:14:59,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:14:59,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:14:59,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:14:59,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:14:59,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:14:59,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:14:59,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:14:59,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:14:59,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:14:59,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:14:59,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:14:59,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:14:59,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:14:59,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:14:59,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:14:59,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:14:59,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:14:59,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:14:59,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:14:59,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:14:59,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:14:59,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:14:59,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:14:59,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:14:59,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:14:59,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:14:59,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:14:59,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:14:59,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:14:59,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:14:59,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:14:59,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:14:59,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:14:59,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:14:59,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:14:59,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:14:59,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:14:59,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:14:59,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:14:59,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:14:59,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:14:59,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:14:59,157 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:14:59,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:14:59,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:14:59,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:14:59,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:14:59,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:14:59,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:14:59,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:14:59,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:14:59,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:14:59,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:14:59,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:14:59,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:14:59,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:14:59,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:14:59,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:14:59,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:14:59,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:14:59,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:14:59,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:14:59,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:14:59,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:14:59,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:14:59,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:14:59,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:14:59,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:14:59,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:14:59,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:14:59,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:14:59,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:14:59,600 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:14:59,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/num_conversion_1.c [2020-10-29 04:14:59,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f6655840/7483593a053940d7b3eb1de28533dde0/FLAG8b59aa1bf [2020-10-29 04:15:00,451 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:15:00,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/num_conversion_1.c [2020-10-29 04:15:00,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f6655840/7483593a053940d7b3eb1de28533dde0/FLAG8b59aa1bf [2020-10-29 04:15:00,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f6655840/7483593a053940d7b3eb1de28533dde0 [2020-10-29 04:15:00,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:15:00,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:15:00,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:15:00,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:15:00,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:15:00,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:15:00" (1/1) ... [2020-10-29 04:15:00,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e349ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:00, skipping insertion in model container [2020-10-29 04:15:00,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:15:00" (1/1) ... [2020-10-29 04:15:00,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:15:00,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:15:01,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:15:01,030 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:15:01,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:15:01,067 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:15:01,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:01 WrapperNode [2020-10-29 04:15:01,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:15:01,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:15:01,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:15:01,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:15:01,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:01" (1/1) ... [2020-10-29 04:15:01,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:01" (1/1) ... [2020-10-29 04:15:01,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:01" (1/1) ... [2020-10-29 04:15:01,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:01" (1/1) ... [2020-10-29 04:15:01,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:01" (1/1) ... [2020-10-29 04:15:01,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:01" (1/1) ... [2020-10-29 04:15:01,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:01" (1/1) ... [2020-10-29 04:15:01,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:15:01,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:15:01,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:15:01,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:15:01,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:15:01,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:15:01,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:15:01,196 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:15:01,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:15:01,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:15:01,197 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:15:01,197 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:15:01,197 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:15:01,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:15:01,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:15:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:15:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:15:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:15:01,446 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:15:01,447 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:15:01,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:15:01 BoogieIcfgContainer [2020-10-29 04:15:01,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:15:01,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:15:01,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:15:01,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:15:01,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:15:00" (1/3) ... [2020-10-29 04:15:01,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185b3d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:15:01, skipping insertion in model container [2020-10-29 04:15:01,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:15:01" (2/3) ... [2020-10-29 04:15:01,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185b3d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:15:01, skipping insertion in model container [2020-10-29 04:15:01,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:15:01" (3/3) ... [2020-10-29 04:15:01,461 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2020-10-29 04:15:01,475 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:15:01,480 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:15:01,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:15:01,530 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:15:01,530 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:15:01,530 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:15:01,530 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:15:01,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:15:01,531 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:15:01,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:15:01,531 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:15:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-29 04:15:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 04:15:01,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:01,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:01,565 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:01,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:01,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1553397026, now seen corresponding path program 1 times [2020-10-29 04:15:01,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:01,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044665795] [2020-10-29 04:15:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:01,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:01,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:15:01,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:01,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 04:15:01,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:01,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:15:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:15:02,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:02,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:02,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:02,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:02,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:15:02,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:02,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:02,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:15:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:15:02,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044665795] [2020-10-29 04:15:02,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:15:02,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:15:02,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770718371] [2020-10-29 04:15:02,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 04:15:02,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:02,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 04:15:02,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 04:15:02,126 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-10-29 04:15:02,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:02,200 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-29 04:15:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 04:15:02,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-29 04:15:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:02,211 INFO L225 Difference]: With dead ends: 38 [2020-10-29 04:15:02,211 INFO L226 Difference]: Without dead ends: 15 [2020-10-29 04:15:02,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 04:15:02,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-29 04:15:02,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-29 04:15:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-29 04:15:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-10-29 04:15:02,259 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-10-29 04:15:02,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:02,260 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-10-29 04:15:02,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 04:15:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-10-29 04:15:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 04:15:02,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:02,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:02,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:15:02,262 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1868317687, now seen corresponding path program 1 times [2020-10-29 04:15:02,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:02,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127261750] [2020-10-29 04:15:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:02,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:15:02,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 04:15:02,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:02,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:15:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:15:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:02,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:02,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:02,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:02,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:15:02,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:02,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:15:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:15:02,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127261750] [2020-10-29 04:15:02,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:15:02,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:15:02,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328309915] [2020-10-29 04:15:02,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:15:02,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:02,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:15:02,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:15:02,577 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-10-29 04:15:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:02,686 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-10-29 04:15:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:15:02,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-29 04:15:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:02,688 INFO L225 Difference]: With dead ends: 24 [2020-10-29 04:15:02,688 INFO L226 Difference]: Without dead ends: 18 [2020-10-29 04:15:02,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:15:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-29 04:15:02,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-10-29 04:15:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-29 04:15:02,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-10-29 04:15:02,700 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-10-29 04:15:02,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:02,700 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-10-29 04:15:02,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:15:02,701 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-10-29 04:15:02,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 04:15:02,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:02,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:02,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:15:02,702 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:02,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:02,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1031623051, now seen corresponding path program 1 times [2020-10-29 04:15:02,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:02,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714147227] [2020-10-29 04:15:02,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:02,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:02,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:15:02,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:02,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-29 04:15:02,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:02,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:15:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:15:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 04:15:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:15:03,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:03,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:03,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:03,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:15:03,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:03,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:15:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:15:03,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714147227] [2020-10-29 04:15:03,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:03,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:15:03,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323541258] [2020-10-29 04:15:03,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:15:03,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:03,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:15:03,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:15:03,131 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-10-29 04:15:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:03,371 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-10-29 04:15:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:15:03,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-29 04:15:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:03,373 INFO L225 Difference]: With dead ends: 27 [2020-10-29 04:15:03,373 INFO L226 Difference]: Without dead ends: 21 [2020-10-29 04:15:03,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:15:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-29 04:15:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-10-29 04:15:03,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-29 04:15:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-29 04:15:03,383 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-10-29 04:15:03,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:03,384 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-29 04:15:03,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:15:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-29 04:15:03,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 04:15:03,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:03,385 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:03,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:15:03,386 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:03,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:03,386 INFO L82 PathProgramCache]: Analyzing trace with hash -101010231, now seen corresponding path program 2 times [2020-10-29 04:15:03,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:03,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036163825] [2020-10-29 04:15:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:03,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:03,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:15:03,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:03,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 04:15:03,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:03,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:15:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:15:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 04:15:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:15:03,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:03,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:03,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:03,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:15:03,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:03,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:15:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:15:03,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036163825] [2020-10-29 04:15:03,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:03,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:15:03,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275709101] [2020-10-29 04:15:03,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:15:03,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:03,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:15:03,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:15:03,619 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2020-10-29 04:15:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:03,801 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-10-29 04:15:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:15:03,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-29 04:15:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:03,803 INFO L225 Difference]: With dead ends: 30 [2020-10-29 04:15:03,803 INFO L226 Difference]: Without dead ends: 24 [2020-10-29 04:15:03,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:15:03,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-29 04:15:03,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-10-29 04:15:03,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-29 04:15:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-29 04:15:03,812 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 18 [2020-10-29 04:15:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:03,813 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-29 04:15:03,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:15:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-29 04:15:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 04:15:03,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:03,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:03,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:15:03,815 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:03,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1116036917, now seen corresponding path program 3 times [2020-10-29 04:15:03,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:03,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162605076] [2020-10-29 04:15:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:03,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 04:15:03,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:03,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 04:15:03,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:03,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:15:04,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:15:04,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:15:04,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:15:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:04,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:04,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:04,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:04,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:15:04,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:04,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:15:04,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162605076] [2020-10-29 04:15:04,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:04,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:15:04,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361933743] [2020-10-29 04:15:04,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:15:04,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:04,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:15:04,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:15:04,152 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 7 states. [2020-10-29 04:15:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:04,427 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-29 04:15:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:15:04,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-29 04:15:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:04,429 INFO L225 Difference]: With dead ends: 33 [2020-10-29 04:15:04,429 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 04:15:04,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:15:04,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 04:15:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-29 04:15:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-29 04:15:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-29 04:15:04,438 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 21 [2020-10-29 04:15:04,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:04,438 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-29 04:15:04,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:15:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-29 04:15:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 04:15:04,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:04,439 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:04,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:15:04,440 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:04,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1088691593, now seen corresponding path program 4 times [2020-10-29 04:15:04,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:04,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370970778] [2020-10-29 04:15:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:04,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:04,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:04,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 04:15:04,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:04,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 04:15:04,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:04,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:04,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:15:04,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:15:04,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:15:04,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:04,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:04,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:04,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:04,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:04,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:15:04,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:04,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:15:04,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370970778] [2020-10-29 04:15:04,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:04,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:15:04,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524579690] [2020-10-29 04:15:04,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:15:04,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:04,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:15:04,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:15:04,694 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 8 states. [2020-10-29 04:15:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:05,045 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-10-29 04:15:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 04:15:05,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-29 04:15:05,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:05,047 INFO L225 Difference]: With dead ends: 36 [2020-10-29 04:15:05,047 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 04:15:05,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:15:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 04:15:05,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-29 04:15:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 04:15:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-29 04:15:05,055 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 24 [2020-10-29 04:15:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:05,055 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-29 04:15:05,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:15:05,056 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-29 04:15:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 04:15:05,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:05,057 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:05,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:15:05,057 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:05,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:05,058 INFO L82 PathProgramCache]: Analyzing trace with hash -779124725, now seen corresponding path program 5 times [2020-10-29 04:15:05,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:05,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106172306] [2020-10-29 04:15:05,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:05,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:05,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:05,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:15:05,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 04:15:05,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:05,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:15:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:15:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:15:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:05,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:05,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:05,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:05,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:15:05,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:05,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:15:05,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106172306] [2020-10-29 04:15:05,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:05,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:15:05,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942894685] [2020-10-29 04:15:05,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:15:05,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:05,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:15:05,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:15:05,387 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-10-29 04:15:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:05,744 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-10-29 04:15:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:15:05,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-29 04:15:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:05,746 INFO L225 Difference]: With dead ends: 39 [2020-10-29 04:15:05,746 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 04:15:05,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:15:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 04:15:05,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-29 04:15:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 04:15:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-29 04:15:05,754 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 27 [2020-10-29 04:15:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:05,754 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-29 04:15:05,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:15:05,755 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-29 04:15:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 04:15:05,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:05,756 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:05,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:15:05,756 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:05,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:05,757 INFO L82 PathProgramCache]: Analyzing trace with hash 701232713, now seen corresponding path program 6 times [2020-10-29 04:15:05,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:05,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290600158] [2020-10-29 04:15:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:05,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:05,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 04:15:05,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:05,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 04:15:05,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:05,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:15:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:15:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:15:05,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:06,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:06,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:06,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:06,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:06,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:15:06,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:06,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:15:06,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290600158] [2020-10-29 04:15:06,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:06,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:15:06,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353825634] [2020-10-29 04:15:06,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:15:06,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:06,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:15:06,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:15:06,118 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 10 states. [2020-10-29 04:15:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:06,633 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-10-29 04:15:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:15:06,634 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-29 04:15:06,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:06,635 INFO L225 Difference]: With dead ends: 42 [2020-10-29 04:15:06,635 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 04:15:06,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:15:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 04:15:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-29 04:15:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 04:15:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-29 04:15:06,643 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 30 [2020-10-29 04:15:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:06,644 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-29 04:15:06,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:15:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-29 04:15:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 04:15:06,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:06,645 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:06,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:15:06,645 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:06,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:06,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1305472843, now seen corresponding path program 7 times [2020-10-29 04:15:06,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:06,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469203574] [2020-10-29 04:15:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:06,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:06,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 04:15:06,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:06,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 04:15:06,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:06,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:15:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:15:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 04:15:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:15:07,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:07,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:07,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:15:07,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:07,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:15:07,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469203574] [2020-10-29 04:15:07,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:07,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:15:07,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370984758] [2020-10-29 04:15:07,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:15:07,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:07,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:15:07,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:15:07,055 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 11 states. [2020-10-29 04:15:07,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:07,726 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2020-10-29 04:15:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:15:07,732 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-29 04:15:07,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:07,734 INFO L225 Difference]: With dead ends: 43 [2020-10-29 04:15:07,734 INFO L226 Difference]: Without dead ends: 37 [2020-10-29 04:15:07,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:15:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-29 04:15:07,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-29 04:15:07,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 04:15:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-29 04:15:07,742 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 33 [2020-10-29 04:15:07,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:07,744 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-29 04:15:07,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:15:07,744 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-29 04:15:07,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 04:15:07,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:07,746 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:07,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:15:07,746 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:07,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:07,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2015248137, now seen corresponding path program 8 times [2020-10-29 04:15:07,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:07,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552208611] [2020-10-29 04:15:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 04:15:07,791 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 04:15:07,792 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 04:15:07,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:15:07,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:15:07 BoogieIcfgContainer [2020-10-29 04:15:07,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 04:15:07,823 INFO L168 Benchmark]: Toolchain (without parser) took 7027.86 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 130.9 MB in the beginning and 204.5 MB in the end (delta: -73.5 MB). Peak memory consumption was 125.4 MB. Max. memory is 8.0 GB. [2020-10-29 04:15:07,824 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 04:15:07,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.88 ms. Allocated memory is still 156.2 MB. Free memory was 130.2 MB in the beginning and 120.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 04:15:07,827 INFO L168 Benchmark]: Boogie Preprocessor took 40.46 ms. Allocated memory is still 156.2 MB. Free memory was 120.9 MB in the beginning and 119.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 04:15:07,832 INFO L168 Benchmark]: RCFGBuilder took 338.28 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 107.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-29 04:15:07,834 INFO L168 Benchmark]: TraceAbstraction took 6369.21 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 106.5 MB in the beginning and 204.5 MB in the end (delta: -97.9 MB). Peak memory consumption was 101.3 MB. Max. memory is 8.0 GB. [2020-10-29 04:15:07,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.88 ms. Allocated memory is still 156.2 MB. Free memory was 130.2 MB in the beginning and 120.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.46 ms. Allocated memory is still 156.2 MB. Free memory was 120.9 MB in the beginning and 119.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 338.28 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 107.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6369.21 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 106.5 MB in the beginning and 204.5 MB in the end (delta: -97.9 MB). Peak memory consumption was 101.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 24, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L16] unsigned char x; [L17] unsigned char y; [L18] unsigned char c; [L20] x = 37 [L21] y = 0 [L22] c = 0 [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND FALSE !(c < (unsigned char)8) [L31] CALL __VERIFIER_assert(x == y) [L7] COND TRUE !(cond) [L8] CALL reach_error() [L3] __assert_fail("0", "num_conversion_1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.2s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 307 SDslu, 181 SDs, 0 SdLazy, 721 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 14 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 183 ConstructedInterpolants, 0 QuantifiedInterpolants, 34395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 0/196 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...