/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=DEEPEST --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/array-patterns/array6_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:51:34,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:51:34,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:51:34,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:51:34,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:51:34,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:51:34,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:51:34,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:51:34,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:51:34,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:51:34,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:51:34,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:51:34,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:51:34,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:51:34,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:51:34,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:51:34,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:51:34,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:51:34,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:51:34,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:51:34,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:51:34,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:51:34,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:51:34,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:51:34,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:51:34,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:51:34,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:51:34,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:51:34,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:51:34,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:51:34,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:51:34,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:51:34,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:51:34,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:51:34,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:51:34,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:51:34,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:51:34,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:51:34,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:51:34,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:51:34,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:51:34,982 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 [2020-10-27 14:51:35,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:51:35,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:51:35,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:51:35,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:51:35,047 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:51:35,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:51:35,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:51:35,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:51:35,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:51:35,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:51:35,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:51:35,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:51:35,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:51:35,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:51:35,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:51:35,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:51:35,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:51:35,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:51:35,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:51:35,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:51:35,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:51:35,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:51:35,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:51:35,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:51:35,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:51:35,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:51:35,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:51:35,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:51:35,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:51:35,054 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:51:35,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:51:35,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:51:35,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:51:35,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:51:35,531 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:51:35,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array6_pattern.c [2020-10-27 14:51:35,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e1e0e508/dbb6f6fe6cd44270a642e450b865ba54/FLAGea918d907 [2020-10-27 14:51:36,305 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:51:36,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-patterns/array6_pattern.c [2020-10-27 14:51:36,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e1e0e508/dbb6f6fe6cd44270a642e450b865ba54/FLAGea918d907 [2020-10-27 14:51:36,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e1e0e508/dbb6f6fe6cd44270a642e450b865ba54 [2020-10-27 14:51:36,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:51:36,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:51:36,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:51:36,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:51:36,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:51:36,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:51:36" (1/1) ... [2020-10-27 14:51:36,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135cfad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36, skipping insertion in model container [2020-10-27 14:51:36,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:51:36" (1/1) ... [2020-10-27 14:51:36,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:51:36,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:51:36,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:51:36,888 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:51:36,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:51:36,931 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:51:36,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36 WrapperNode [2020-10-27 14:51:36,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:51:36,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:51:36,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:51:36,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:51:36,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36" (1/1) ... [2020-10-27 14:51:36,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36" (1/1) ... [2020-10-27 14:51:36,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36" (1/1) ... [2020-10-27 14:51:36,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36" (1/1) ... [2020-10-27 14:51:36,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36" (1/1) ... [2020-10-27 14:51:36,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36" (1/1) ... [2020-10-27 14:51:36,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36" (1/1) ... [2020-10-27 14:51:36,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:51:36,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:51:36,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:51:36,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:51:36,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36" (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 [2020-10-27 14:51:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:51:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:51:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:51:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:51:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:51:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:51:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:51:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:51:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:51:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:51:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:51:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:51:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:51:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-27 14:51:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:51:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:51:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:51:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:51:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:51:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:51:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:51:37,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:51:37,477 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:51:37,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:51:37 BoogieIcfgContainer [2020-10-27 14:51:37,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:51:37,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:51:37,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:51:37,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:51:37,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:51:36" (1/3) ... [2020-10-27 14:51:37,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddc210f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:51:37, skipping insertion in model container [2020-10-27 14:51:37,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:36" (2/3) ... [2020-10-27 14:51:37,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddc210f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:51:37, skipping insertion in model container [2020-10-27 14:51:37,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:51:37" (3/3) ... [2020-10-27 14:51:37,489 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2020-10-27 14:51:37,504 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:51:37,510 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:51:37,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:51:37,558 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:51:37,558 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:51:37,558 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:51:37,558 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:51:37,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:51:37,559 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:51:37,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:51:37,559 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:51:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 14:51:37,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 14:51:37,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:51:37,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:51:37,588 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:51:37,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:51:37,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1471950301, now seen corresponding path program 1 times [2020-10-27 14:51:37,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:51:37,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942518999] [2020-10-27 14:51:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:51:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:37,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:37,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:38,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:38,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:38,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 14:51:38,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:51:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-27 14:51:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:51:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:51:38,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:51:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:38,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:38,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:51:38,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:51:38,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:38,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:51:38,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:51:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:38,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:38,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:38,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:38,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:51:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:51:38,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:38,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:51:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:38,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:51:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:51:38,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942518999] [2020-10-27 14:51:38,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:51:38,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:51:38,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322522893] [2020-10-27 14:51:38,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:51:38,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:51:38,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:51:38,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:51:38,670 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-27 14:51:38,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:51:38,809 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-10-27 14:51:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:51:38,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-27 14:51:38,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:51:38,820 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:51:38,820 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 14:51:38,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:51:38,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 14:51:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-27 14:51:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 14:51:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-27 14:51:38,874 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2020-10-27 14:51:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:51:38,875 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-27 14:51:38,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:51:38,875 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-27 14:51:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:51:38,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:51:38,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:51:38,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:51:38,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:51:38,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:51:38,879 INFO L82 PathProgramCache]: Analyzing trace with hash 657650866, now seen corresponding path program 1 times [2020-10-27 14:51:38,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:51:38,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028855708] [2020-10-27 14:51:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:51:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:39,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:39,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:41,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:41,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:51:41,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:51:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2951 [2020-10-27 14:51:41,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:51:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:51:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:51:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:41,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:51:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:41,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:41,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:41,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:51:41,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:41,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:51:41,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:41,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:41,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:51:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:41,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:41,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:41,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:41,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:51:41,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:41,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:51:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:41,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:41,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:41,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:41,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:41,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:51:41,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:51:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:51:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:51:42,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028855708] [2020-10-27 14:51:42,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:51:42,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 14:51:42,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015179595] [2020-10-27 14:51:42,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:51:42,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:51:42,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:51:42,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:51:42,008 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 7 states. [2020-10-27 14:51:42,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:51:42,626 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-10-27 14:51:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:51:42,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-27 14:51:42,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:51:42,630 INFO L225 Difference]: With dead ends: 41 [2020-10-27 14:51:42,630 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 14:51:42,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:51:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 14:51:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-27 14:51:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:51:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-27 14:51:42,643 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 28 [2020-10-27 14:51:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:51:42,644 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-27 14:51:42,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:51:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-27 14:51:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 14:51:42,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:51:42,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:51:42,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:51:42,646 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:51:42,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:51:42,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1192607700, now seen corresponding path program 1 times [2020-10-27 14:51:42,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:51:42,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851181249] [2020-10-27 14:51:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:51:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:42,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:44,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:44,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:51:44,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:51:44,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-10-27 14:51:44,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:51:44,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:51:44,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:51:44,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:51:44,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:51:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:44,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:44,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:44,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:51:44,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:51:44,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:44,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:51:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:44,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:44,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:44,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:44,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:51:44,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:44,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:44,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:44,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:51:44,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:51:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:44,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:44,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:44,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:51:44,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:51:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:51:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:51:44,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851181249] [2020-10-27 14:51:44,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:51:44,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:51:44,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030040441] [2020-10-27 14:51:44,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:51:44,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:51:44,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:51:44,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:51:44,336 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 8 states. [2020-10-27 14:51:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:51:44,744 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-27 14:51:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:51:44,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-27 14:51:44,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:51:44,746 INFO L225 Difference]: With dead ends: 43 [2020-10-27 14:51:44,746 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 14:51:44,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:51:44,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 14:51:44,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-27 14:51:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 14:51:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-27 14:51:44,758 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 30 [2020-10-27 14:51:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:51:44,758 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-27 14:51:44,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:51:44,759 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-27 14:51:44,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:51:44,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:51:44,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:51:44,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:51:44,761 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:51:44,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:51:44,762 INFO L82 PathProgramCache]: Analyzing trace with hash -109950346, now seen corresponding path program 2 times [2020-10-27 14:51:44,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:51:44,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641553160] [2020-10-27 14:51:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:51:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:48,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:48,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:51:48,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:51:48,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3807 [2020-10-27 14:51:48,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:51:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:51:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:51:48,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:51:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:48,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:48,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:51:48,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:48,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:51:48,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:48,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:51:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:48,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:48,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:48,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:48,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:51:48,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:48,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:48,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:51:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:48,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:48,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:48,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:48,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:51:48,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:51:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:51:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:51:48,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641553160] [2020-10-27 14:51:48,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:51:48,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:51:48,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109460841] [2020-10-27 14:51:48,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:51:48,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:51:48,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:51:48,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:51:48,719 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 9 states. [2020-10-27 14:51:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:51:49,119 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-10-27 14:51:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:51:49,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-27 14:51:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:51:49,121 INFO L225 Difference]: With dead ends: 44 [2020-10-27 14:51:49,121 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:51:49,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:51:49,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:51:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-27 14:51:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 14:51:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-27 14:51:49,130 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 32 [2020-10-27 14:51:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:51:49,130 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-27 14:51:49,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:51:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-27 14:51:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:51:49,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:51:49,132 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:51:49,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:51:49,132 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:51:49,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:51:49,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2032749416, now seen corresponding path program 3 times [2020-10-27 14:51:49,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:51:49,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875103954] [2020-10-27 14:51:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:51:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:49,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:49,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:49,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:54,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:54,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:51:54,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:51:54,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:51:54,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:51:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:51:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:51:54,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:51:54,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:51:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:51:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:51:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:54,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:51:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:54,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:54,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:54,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:54,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:51:54,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:54,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:51:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:54,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:54,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:54,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:54,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:54,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:51:54,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:51:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:51:54,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:51:54,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 14:51:54,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875103954] [2020-10-27 14:51:54,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:51:54,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 14:51:54,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412317023] [2020-10-27 14:51:54,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:51:54,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:51:54,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:51:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:51:54,272 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 7 states. [2020-10-27 14:51:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:51:54,600 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-10-27 14:51:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:51:54,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-27 14:51:54,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:51:54,601 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:51:54,602 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:51:54,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:51:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:51:54,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 14:51:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:51:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-27 14:51:54,610 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 34 [2020-10-27 14:51:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:51:54,611 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-27 14:51:54,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:51:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-27 14:51:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:51:54,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:51:54,612 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:51:54,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:51:54,613 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:51:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:51:54,613 INFO L82 PathProgramCache]: Analyzing trace with hash 38593274, now seen corresponding path program 1 times [2020-10-27 14:51:54,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:51:54,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079063095] [2020-10-27 14:51:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:51:54,625 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-27 14:51:54,625 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-27 14:51:54,625 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:51:54,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:51:54,657 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 14:51:54,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:51:54 BoogieIcfgContainer [2020-10-27 14:51:54,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:51:54,660 INFO L168 Benchmark]: Toolchain (without parser) took 18018.29 ms. Allocated memory was 151.0 MB in the beginning and 427.8 MB in the end (delta: 276.8 MB). Free memory was 126.5 MB in the beginning and 392.2 MB in the end (delta: -265.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2020-10-27 14:51:54,661 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 123.3 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:51:54,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.95 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:51:54,663 INFO L168 Benchmark]: Boogie Preprocessor took 43.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:51:54,663 INFO L168 Benchmark]: RCFGBuilder took 502.23 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 133.2 MB in the end (delta: -19.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2020-10-27 14:51:54,664 INFO L168 Benchmark]: TraceAbstraction took 17176.17 ms. Allocated memory was 151.0 MB in the beginning and 427.8 MB in the end (delta: 276.8 MB). Free memory was 132.7 MB in the beginning and 392.2 MB in the end (delta: -259.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-27 14:51:54,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 123.3 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.95 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 502.23 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 133.2 MB in the end (delta: -19.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17176.17 ms. Allocated memory was 151.0 MB in the beginning and 427.8 MB in the end (delta: 276.8 MB). Free memory was 132.7 MB in the beginning and 392.2 MB in the end (delta: -259.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 28]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L37] signed long long ARR_SIZE ; [L41] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L42] CALL assume_abort_if_not(ARR_SIZE > 0) [L31] COND FALSE !(!cond) [L42] RET assume_abort_if_not(ARR_SIZE > 0) [L44] int array1[ARR_SIZE] ; [L45] int array2[ARR_SIZE] ; [L46] int count = 0, num = -1 ; [L47] signed long long sum = 0 ; [L48] int temp ; [L49] short index ; [L51] count=0 [L51] COND TRUE count 0 && index < ARR_SIZE-1) [L31] COND FALSE !(!cond) [L61] RET assume_abort_if_not(index > 0 && index < ARR_SIZE-1) [L63] EXPR array1[index-1] [L63] EXPR array1[index+1] [L63] array1[index] = array1[index-1] + array1[index+1] [L64] EXPR array2[index-1] [L64] EXPR array2[index+1] [L64] array2[index] = array2[index-1] + array2[index+1] [L66] temp = __VERIFIER_nondet_int() [L67] COND TRUE temp == 0 [L70] count=0 [L70] COND TRUE count