/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:17:51,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:17:51,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:17:51,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:17:51,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:17:51,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:17:51,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:17:51,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:17:51,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:17:51,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:17:51,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:17:51,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:17:51,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:17:51,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:17:51,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:17:51,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:17:51,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:17:51,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:17:51,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:17:51,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:17:51,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:17:51,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:17:51,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:17:51,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:17:51,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:17:51,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:17:51,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:17:51,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:17:51,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:17:51,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:17:51,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:17:51,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:17:51,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:17:51,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:17:51,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:17:51,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:17:51,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:17:51,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:17:51,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:17:51,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:17:51,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:17:51,561 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 [2020-09-24 18:17:51,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:17:51,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:17:51,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:17:51,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:17:51,605 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:17:51,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:17:51,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:17:51,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:17:51,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:17:51,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:17:51,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:17:51,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:17:51,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:17:51,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:17:51,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:17:51,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:17:51,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:17:51,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:17:51,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:17:51,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:17:51,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:17:51,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:17:51,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:17:51,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:17:51,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:17:51,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:17:51,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:17:51,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:17:51,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:17:51,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:17:52,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:17:52,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:17:52,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:17:52,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:17:52,082 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:17:52,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test14.c [2020-09-24 18:17:52,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/980104e50/95453239514a415a87ed73ea60f96b7d/FLAG60d7895ae [2020-09-24 18:17:52,709 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:17:52,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test14.c [2020-09-24 18:17:52,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/980104e50/95453239514a415a87ed73ea60f96b7d/FLAG60d7895ae [2020-09-24 18:17:53,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/980104e50/95453239514a415a87ed73ea60f96b7d [2020-09-24 18:17:53,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:17:53,076 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:17:53,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:17:53,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:17:53,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:17:53,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:17:53" (1/1) ... [2020-09-24 18:17:53,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afef70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53, skipping insertion in model container [2020-09-24 18:17:53,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:17:53" (1/1) ... [2020-09-24 18:17:53,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:17:53,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:17:53,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:17:53,354 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:17:53,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:17:53,390 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:17:53,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53 WrapperNode [2020-09-24 18:17:53,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:17:53,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:17:53,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:17:53,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:17:53,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53" (1/1) ... [2020-09-24 18:17:53,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53" (1/1) ... [2020-09-24 18:17:53,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53" (1/1) ... [2020-09-24 18:17:53,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53" (1/1) ... [2020-09-24 18:17:53,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53" (1/1) ... [2020-09-24 18:17:53,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53" (1/1) ... [2020-09-24 18:17:53,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53" (1/1) ... [2020-09-24 18:17:53,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:17:53,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:17:53,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:17:53,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:17:53,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53" (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 [2020-09-24 18:17:53,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:17:53,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:17:53,604 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-09-24 18:17:53,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:17:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:17:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:17:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 18:17:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-09-24 18:17:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:17:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:17:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 18:17:53,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:17:53,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:17:53,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:17:53,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:17:53,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:17:53,947 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:17:53,948 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:17:53,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:17:53 BoogieIcfgContainer [2020-09-24 18:17:53,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:17:53,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:17:53,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:17:53,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:17:53,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:17:53" (1/3) ... [2020-09-24 18:17:53,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6756ae5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:17:53, skipping insertion in model container [2020-09-24 18:17:53,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:53" (2/3) ... [2020-09-24 18:17:53,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6756ae5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:17:53, skipping insertion in model container [2020-09-24 18:17:53,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:17:53" (3/3) ... [2020-09-24 18:17:53,964 INFO L109 eAbstractionObserver]: Analyzing ICFG test14.c [2020-09-24 18:17:53,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:17:53,986 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:17:54,010 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:17:54,038 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:17:54,038 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:17:54,038 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:17:54,039 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:17:54,039 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:17:54,039 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:17:54,039 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:17:54,039 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:17:54,064 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 18:17:54,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 18:17:54,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:17:54,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:17:54,075 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:17:54,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:17:54,082 INFO L82 PathProgramCache]: Analyzing trace with hash 465652526, now seen corresponding path program 1 times [2020-09-24 18:17:54,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:17:54,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760207825] [2020-09-24 18:17:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:17:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:54,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:54,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:54,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:54,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:17:54,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:17:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-24 18:17:54,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:17:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:17:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:17:54,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:17:55,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:55,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:55,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:17:55,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:55,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:17:55,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:55,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:55,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:55,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:55,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:17:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:55,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:55,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:55,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:17:55,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:55,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:17:55,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:17:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:17:55,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:17:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:17:55,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760207825] [2020-09-24 18:17:55,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:17:55,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:17:55,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477679618] [2020-09-24 18:17:55,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:17:55,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:17:55,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:17:55,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:17:55,234 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 6 states. [2020-09-24 18:17:55,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:17:55,566 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2020-09-24 18:17:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:17:55,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-24 18:17:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:17:55,586 INFO L225 Difference]: With dead ends: 83 [2020-09-24 18:17:55,587 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 18:17:55,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:17:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 18:17:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 18:17:55,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 18:17:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-09-24 18:17:55,659 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 43 [2020-09-24 18:17:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:17:55,661 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-09-24 18:17:55,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:17:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-09-24 18:17:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 18:17:55,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:17:55,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:17:55,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:17:55,665 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:17:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:17:55,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1782210472, now seen corresponding path program 1 times [2020-09-24 18:17:55,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:17:55,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159856423] [2020-09-24 18:17:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:17:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:55,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:56,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:56,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:17:56,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:17:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-24 18:17:56,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:17:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:17:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:17:56,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:56,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:56,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:56,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:56,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:17:56,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:17:56,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:56,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:56,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:56,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-24 18:17:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:17:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:56,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:56,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:17:56,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:56,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:17:56,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:17:56,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159856423] [2020-09-24 18:17:56,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:17:56,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:17:56,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688462735] [2020-09-24 18:17:56,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:17:56,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:17:56,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:17:56,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:17:56,146 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 5 states. [2020-09-24 18:17:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:17:56,293 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-09-24 18:17:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:17:56,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-24 18:17:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:17:56,296 INFO L225 Difference]: With dead ends: 59 [2020-09-24 18:17:56,296 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 18:17:56,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:17:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 18:17:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 18:17:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 18:17:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-09-24 18:17:56,315 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2020-09-24 18:17:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:17:56,316 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-09-24 18:17:56,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:17:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-09-24 18:17:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 18:17:56,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:17:56,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:17:56,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:17:56,321 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:17:56,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:17:56,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1590234488, now seen corresponding path program 1 times [2020-09-24 18:17:56,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:17:56,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287078151] [2020-09-24 18:17:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:17:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:56,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:56,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 18:17:56,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:17:56,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-24 18:17:56,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:17:56,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 18:17:56,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:17:56,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:56,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:56,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:56,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:17:56,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:17:56,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:56,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:56,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:17:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:56,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:56,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:56,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:17:56,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:17:56,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:17:56,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287078151] [2020-09-24 18:17:56,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:17:56,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:17:56,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958631358] [2020-09-24 18:17:56,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:17:56,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:17:56,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:17:56,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:17:56,957 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 8 states. [2020-09-24 18:17:57,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:17:57,279 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-09-24 18:17:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:17:57,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-09-24 18:17:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:17:57,281 INFO L225 Difference]: With dead ends: 51 [2020-09-24 18:17:57,282 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:17:57,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:17:57,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:17:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:17:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:17:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:17:57,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-09-24 18:17:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:17:57,288 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:17:57,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:17:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:17:57,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:17:57,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:17:57,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:17:57,458 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 18:17:57,459 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 18:17:57,459 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line 5) no Hoare annotation was computed. [2020-09-24 18:17:57,460 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#b~0.offset| |old(~#b~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:17:57,460 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 18:17:57,460 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 18:17:57,460 INFO L268 CegarLoopResult]: For program point L5-2(line 5) no Hoare annotation was computed. [2020-09-24 18:17:57,460 INFO L268 CegarLoopResult]: For program point L5-3(line 5) no Hoare annotation was computed. [2020-09-24 18:17:57,461 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:17:57,461 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-24 18:17:57,461 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 18:17:57,461 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2020-09-24 18:17:57,461 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 18:17:57,462 INFO L268 CegarLoopResult]: For program point L9-3(line 9) no Hoare annotation was computed. [2020-09-24 18:17:57,462 INFO L268 CegarLoopResult]: For program point L9-4(line 9) no Hoare annotation was computed. [2020-09-24 18:17:57,462 INFO L268 CegarLoopResult]: For program point L9-5(line 9) no Hoare annotation was computed. [2020-09-24 18:17:57,462 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-24 18:17:57,462 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:17:57,463 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:17:57,463 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:17:57,463 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:17:57,463 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2020-09-24 18:17:57,463 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 18:17:57,464 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,464 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,464 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,464 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,465 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 18:17:57,465 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,465 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 18:17:57,465 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 18:17:57,465 INFO L268 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,466 INFO L268 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,466 INFO L268 CegarLoopResult]: For program point L19-8(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,466 INFO L268 CegarLoopResult]: For program point L19-9(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,466 INFO L268 CegarLoopResult]: For program point L19-10(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,466 INFO L268 CegarLoopResult]: For program point L19-11(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,467 INFO L268 CegarLoopResult]: For program point L19-12(line 19) no Hoare annotation was computed. [2020-09-24 18:17:57,467 INFO L264 CegarLoopResult]: At program point L20(lines 12 27) the Hoare annotation is: false [2020-09-24 18:17:57,467 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 18:17:57,467 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 18:17:57,468 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 18:17:57,468 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2020-09-24 18:17:57,468 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 18:17:57,468 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 18:17:57,468 INFO L268 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-09-24 18:17:57,468 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 18:17:57,469 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2020-09-24 18:17:57,469 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 18:17:57,469 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 18:17:57,469 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-24 18:17:57,470 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-24 18:17:57,470 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-24 18:17:57,470 INFO L268 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-09-24 18:17:57,470 INFO L268 CegarLoopResult]: For program point L13-7(line 13) no Hoare annotation was computed. [2020-09-24 18:17:57,471 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-24 18:17:57,471 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 27) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-24 18:17:57,471 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 18:17:57,471 INFO L268 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-09-24 18:17:57,471 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 19) no Hoare annotation was computed. [2020-09-24 18:17:57,472 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2020-09-24 18:17:57,472 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 18:17:57,472 INFO L268 CegarLoopResult]: For program point L18-4(lines 18 19) no Hoare annotation was computed. [2020-09-24 18:17:57,472 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 18:17:57,473 INFO L268 CegarLoopResult]: For program point L18-5(lines 18 19) no Hoare annotation was computed. [2020-09-24 18:17:57,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:17:57 BoogieIcfgContainer [2020-09-24 18:17:57,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:17:57,496 INFO L168 Benchmark]: Toolchain (without parser) took 4422.11 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 103.5 MB in the beginning and 162.1 MB in the end (delta: -58.6 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:17:57,497 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 18:17:57,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.08 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:17:57,499 INFO L168 Benchmark]: Boogie Preprocessor took 126.01 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 92.7 MB in the beginning and 182.5 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:17:57,500 INFO L168 Benchmark]: RCFGBuilder took 436.57 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 163.4 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:17:57,501 INFO L168 Benchmark]: TraceAbstraction took 3535.28 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 162.8 MB in the beginning and 162.1 MB in the end (delta: 696.2 kB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:17:57,505 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 314.08 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.01 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 92.7 MB in the beginning and 182.5 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.57 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 163.4 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3535.28 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 162.8 MB in the beginning and 162.1 MB in the end (delta: 696.2 kB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 105 SDslu, 275 SDs, 0 SdLazy, 274 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 45 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 13563 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...