/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/s3_srvr_3a.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:01:18,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:01:18,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:01:18,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:01:18,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:01:18,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:01:18,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:01:18,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:01:18,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:01:18,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:01:18,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:01:18,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:01:18,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:01:18,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:01:18,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:01:18,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:01:18,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:01:18,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:01:18,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:01:18,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:01:18,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:01:18,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:01:18,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:01:18,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:01:18,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:01:18,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:01:18,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:01:18,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:01:18,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:01:18,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:01:18,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:01:18,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:01:18,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:01:18,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:01:18,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:01:18,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:01:18,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:01:18,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:01:18,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:01:18,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:01:18,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:01:18,603 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 [2020-10-26 20:01:18,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:01:18,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:01:18,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:01:18,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:01:18,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:01:18,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:01:18,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:01:18,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:01:18,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:01:18,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:01:18,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:01:18,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:01:18,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:01:18,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:01:18,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:01:18,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:01:18,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:01:18,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:01:18,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:01:18,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:01:18,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:01:18,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:01:18,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:01:18,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:01:18,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:01:18,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:01:18,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:01:18,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:01:18,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:01:18,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:01:19,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:01:19,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:01:19,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:01:19,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:01:19,056 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:01:19,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_srvr_3a.BV.c.cil.c [2020-10-26 20:01:19,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97302a792/6c33e908eb90428b8cc5ffab6aeba948/FLAG8f60c2952 [2020-10-26 20:01:19,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:01:19,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/s3_srvr_3a.BV.c.cil.c [2020-10-26 20:01:19,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97302a792/6c33e908eb90428b8cc5ffab6aeba948/FLAG8f60c2952 [2020-10-26 20:01:20,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97302a792/6c33e908eb90428b8cc5ffab6aeba948 [2020-10-26 20:01:20,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:01:20,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:01:20,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:01:20,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:01:20,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:01:20,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:01:20" (1/1) ... [2020-10-26 20:01:20,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e918245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20, skipping insertion in model container [2020-10-26 20:01:20,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:01:20" (1/1) ... [2020-10-26 20:01:20,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:01:20,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:01:20,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:01:20,609 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:01:20,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:01:20,691 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:01:20,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20 WrapperNode [2020-10-26 20:01:20,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:01:20,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:01:20,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:01:20,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:01:20,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20" (1/1) ... [2020-10-26 20:01:20,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20" (1/1) ... [2020-10-26 20:01:20,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20" (1/1) ... [2020-10-26 20:01:20,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20" (1/1) ... [2020-10-26 20:01:20,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20" (1/1) ... [2020-10-26 20:01:20,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20" (1/1) ... [2020-10-26 20:01:20,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20" (1/1) ... [2020-10-26 20:01:20,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:01:20,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:01:20,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:01:20,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:01:20,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20" (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 [2020-10-26 20:01:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:01:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:01:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:01:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-26 20:01:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:01:20,862 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:01:20,862 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:01:20,862 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:01:20,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:01:20,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-26 20:01:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:01:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-26 20:01:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-26 20:01:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:01:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:01:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:01:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:01:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:01:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:01:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:01:21,270 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-26 20:01:22,005 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-26 20:01:22,005 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-26 20:01:22,030 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:01:22,031 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:01:22,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:01:22 BoogieIcfgContainer [2020-10-26 20:01:22,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:01:22,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:01:22,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:01:22,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:01:22,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:01:20" (1/3) ... [2020-10-26 20:01:22,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f56b1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:01:22, skipping insertion in model container [2020-10-26 20:01:22,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:20" (2/3) ... [2020-10-26 20:01:22,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f56b1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:01:22, skipping insertion in model container [2020-10-26 20:01:22,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:01:22" (3/3) ... [2020-10-26 20:01:22,043 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a.BV.c.cil.c [2020-10-26 20:01:22,056 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:01:22,062 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:01:22,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:01:22,106 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:01:22,107 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:01:22,107 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:01:22,107 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:01:22,107 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:01:22,107 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:01:22,107 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:01:22,107 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:01:22,130 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-10-26 20:01:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-26 20:01:22,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:22,143 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, 1, 1] [2020-10-26 20:01:22,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:22,151 INFO L82 PathProgramCache]: Analyzing trace with hash -30726417, now seen corresponding path program 1 times [2020-10-26 20:01:22,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:22,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536855871] [2020-10-26 20:01:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:22,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:23,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:23,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-26 20:01:23,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:01:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-10-26 20:01:23,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:01:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 20:01:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:01:23,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:23,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:23,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:23,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:23,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:01:23,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:01:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:01:23,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536855871] [2020-10-26 20:01:23,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:01:23,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:01:23,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159042875] [2020-10-26 20:01:23,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:01:23,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:23,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:01:23,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:01:23,559 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 6 states. [2020-10-26 20:01:24,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:24,702 INFO L93 Difference]: Finished difference Result 337 states and 576 transitions. [2020-10-26 20:01:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:01:24,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-26 20:01:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:24,717 INFO L225 Difference]: With dead ends: 337 [2020-10-26 20:01:24,718 INFO L226 Difference]: Without dead ends: 177 [2020-10-26 20:01:24,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:01:24,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-26 20:01:24,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2020-10-26 20:01:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-26 20:01:24,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 278 transitions. [2020-10-26 20:01:24,789 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 278 transitions. Word has length 51 [2020-10-26 20:01:24,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:24,790 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 278 transitions. [2020-10-26 20:01:24,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:01:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 278 transitions. [2020-10-26 20:01:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-26 20:01:24,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:24,793 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, 1, 1, 1] [2020-10-26 20:01:24,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:01:24,794 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:24,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:24,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1171555100, now seen corresponding path program 1 times [2020-10-26 20:01:24,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:24,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379467879] [2020-10-26 20:01:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:24,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:25,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:25,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:25,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-26 20:01:25,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:01:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-26 20:01:25,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:01:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:01:25,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:25,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:25,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:25,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:25,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:01:25,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:01:25,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379467879] [2020-10-26 20:01:25,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:01:25,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:01:25,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058309171] [2020-10-26 20:01:25,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:01:25,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:25,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:01:25,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:01:25,439 INFO L87 Difference]: Start difference. First operand 173 states and 278 transitions. Second operand 6 states. [2020-10-26 20:01:26,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:26,376 INFO L93 Difference]: Finished difference Result 353 states and 574 transitions. [2020-10-26 20:01:26,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:01:26,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-26 20:01:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:26,379 INFO L225 Difference]: With dead ends: 353 [2020-10-26 20:01:26,379 INFO L226 Difference]: Without dead ends: 194 [2020-10-26 20:01:26,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:01:26,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-26 20:01:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2020-10-26 20:01:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-26 20:01:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 301 transitions. [2020-10-26 20:01:26,408 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 301 transitions. Word has length 52 [2020-10-26 20:01:26,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:26,408 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 301 transitions. [2020-10-26 20:01:26,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:01:26,409 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 301 transitions. [2020-10-26 20:01:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-26 20:01:26,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:26,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:26,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:01:26,414 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:26,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:26,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1879710141, now seen corresponding path program 1 times [2020-10-26 20:01:26,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:26,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809098927] [2020-10-26 20:01:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:26,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:26,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:26,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:26,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:26,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 20:01:26,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:01:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-26 20:01:26,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-26 20:01:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:01:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:26,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:26,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:26,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:01:26,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:26,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:26,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:01:26,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809098927] [2020-10-26 20:01:26,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:01:26,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:01:26,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632918361] [2020-10-26 20:01:26,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:01:26,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:26,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:01:26,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:01:26,872 INFO L87 Difference]: Start difference. First operand 191 states and 301 transitions. Second operand 4 states. [2020-10-26 20:01:27,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:27,471 INFO L93 Difference]: Finished difference Result 542 states and 865 transitions. [2020-10-26 20:01:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:01:27,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-26 20:01:27,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:27,477 INFO L225 Difference]: With dead ends: 542 [2020-10-26 20:01:27,478 INFO L226 Difference]: Without dead ends: 365 [2020-10-26 20:01:27,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:01:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-26 20:01:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-10-26 20:01:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-26 20:01:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 579 transitions. [2020-10-26 20:01:27,521 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 579 transitions. Word has length 68 [2020-10-26 20:01:27,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:27,522 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 579 transitions. [2020-10-26 20:01:27,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:01:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 579 transitions. [2020-10-26 20:01:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-26 20:01:27,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:27,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:27,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:01:27,531 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:27,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:27,532 INFO L82 PathProgramCache]: Analyzing trace with hash 277660219, now seen corresponding path program 1 times [2020-10-26 20:01:27,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:27,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541434071] [2020-10-26 20:01:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:27,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:27,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:27,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:27,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-26 20:01:27,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:01:27,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 20:01:27,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-26 20:01:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 20:01:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:27,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:27,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:27,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:27,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:27,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:01:27,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 20:01:27,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541434071] [2020-10-26 20:01:27,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:01:27,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:01:27,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476979989] [2020-10-26 20:01:27,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:01:27,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:27,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:01:27,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:01:27,843 INFO L87 Difference]: Start difference. First operand 365 states and 579 transitions. Second operand 4 states. [2020-10-26 20:01:28,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:28,434 INFO L93 Difference]: Finished difference Result 890 states and 1421 transitions. [2020-10-26 20:01:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:01:28,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-26 20:01:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:28,445 INFO L225 Difference]: With dead ends: 890 [2020-10-26 20:01:28,445 INFO L226 Difference]: Without dead ends: 539 [2020-10-26 20:01:28,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:01:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-10-26 20:01:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2020-10-26 20:01:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-10-26 20:01:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 858 transitions. [2020-10-26 20:01:28,521 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 858 transitions. Word has length 89 [2020-10-26 20:01:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:28,522 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 858 transitions. [2020-10-26 20:01:28,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:01:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 858 transitions. [2020-10-26 20:01:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-26 20:01:28,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:28,527 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:28,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:01:28,528 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:28,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:28,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1493392930, now seen corresponding path program 1 times [2020-10-26 20:01:28,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:28,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523533901] [2020-10-26 20:01:28,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:28,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:28,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:28,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 20:01:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 20:01:28,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 20:01:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:01:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:28,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:28,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:28,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:28,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:28,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:01:28,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-26 20:01:28,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523533901] [2020-10-26 20:01:28,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:01:28,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:01:28,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382564417] [2020-10-26 20:01:28,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:01:28,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:28,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:01:28,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:01:28,842 INFO L87 Difference]: Start difference. First operand 539 states and 858 transitions. Second operand 4 states. [2020-10-26 20:01:29,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:29,376 INFO L93 Difference]: Finished difference Result 716 states and 1141 transitions. [2020-10-26 20:01:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:01:29,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-26 20:01:29,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:29,383 INFO L225 Difference]: With dead ends: 716 [2020-10-26 20:01:29,383 INFO L226 Difference]: Without dead ends: 713 [2020-10-26 20:01:29,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:01:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-10-26 20:01:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2020-10-26 20:01:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-26 20:01:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1138 transitions. [2020-10-26 20:01:29,430 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1138 transitions. Word has length 128 [2020-10-26 20:01:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:29,431 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1138 transitions. [2020-10-26 20:01:29,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:01:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1138 transitions. [2020-10-26 20:01:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-26 20:01:29,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:29,441 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:29,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:01:29,441 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:29,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1973145564, now seen corresponding path program 1 times [2020-10-26 20:01:29,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:29,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043584993] [2020-10-26 20:01:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:29,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:29,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043584993] [2020-10-26 20:01:29,524 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-26 20:01:29,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:01:29,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-26 20:01:29,526 ERROR L205 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-26 20:01:29,526 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 20:01:29,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:01:29,593 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-26 20:01:29,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:01:29 BoogieIcfgContainer [2020-10-26 20:01:29,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:01:29,598 INFO L168 Benchmark]: Toolchain (without parser) took 9373.09 ms. Allocated memory was 153.1 MB in the beginning and 232.8 MB in the end (delta: 79.7 MB). Free memory was 128.5 MB in the beginning and 148.4 MB in the end (delta: -19.9 MB). Peak memory consumption was 60.6 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:29,599 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:01:29,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.51 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 112.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:29,609 INFO L168 Benchmark]: Boogie Preprocessor took 72.92 ms. Allocated memory is still 153.1 MB. Free memory was 112.3 MB in the beginning and 109.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:29,610 INFO L168 Benchmark]: RCFGBuilder took 1266.30 ms. Allocated memory is still 153.1 MB. Free memory was 109.6 MB in the beginning and 94.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:29,611 INFO L168 Benchmark]: TraceAbstraction took 7559.32 ms. Allocated memory was 153.1 MB in the beginning and 232.8 MB in the end (delta: 79.7 MB). Free memory was 93.7 MB in the beginning and 148.4 MB in the end (delta: -54.7 MB). Peak memory consumption was 25.6 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:29,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 462.51 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 112.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.92 ms. Allocated memory is still 153.1 MB. Free memory was 112.3 MB in the beginning and 109.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1266.30 ms. Allocated memory is still 153.1 MB. Free memory was 109.6 MB in the beginning and 94.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7559.32 ms. Allocated memory was 153.1 MB in the beginning and 232.8 MB in the end (delta: 79.7 MB). Free memory was 93.7 MB in the beginning and 148.4 MB in the end (delta: -54.7 MB). Peak memory consumption was 25.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseAnd at line 85. Possible FailurePath: [L678] int s ; [L679] int tmp ; [L683] s = 8464 [L684] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int(); [L13] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int(); [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int(); [L21] int s__rwstate ; [L22] int s__init_buf___0 ; [L23] int s__debug = __VERIFIER_nondet_int(); [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int(); [L26] int s__options = __VERIFIER_nondet_int(); [L27] int s__verify_mode = __VERIFIER_nondet_int(); [L28] int s__session__peer = __VERIFIER_nondet_int(); [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int(); [L30] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L31] int s__ctx__stats__sess_accept_renegotiate ; [L32] int s__ctx__stats__sess_accept ; [L33] unsigned int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_uint(); [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int(); [L54] int tmp___2 = __VERIFIER_nondet_int(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int tmp___10 = __VERIFIER_nondet_int(); [L63] int blastFlag ; [L64] int __retres67 ; [L67] s__state = initial_state [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] Time = tmp [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] got_new_session = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 & 12288) [L94] COND FALSE !(s__cert == 0) [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND TRUE s__state == 8464 [L289] s__shutdown = 0 [L290] ret = __VERIFIER_nondet_int() [L291] COND TRUE blastFlag == 0 [L292] blastFlag = 1 [L296] COND FALSE !(ret <= 0) [L301] got_new_session = 1 [L302] s__state = 8496 [L303] s__init_num = 0 [L627] COND FALSE !(! s__s3__tmp__reuse_message) [L656] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND TRUE s__state == 8496 [L307] ret = __VERIFIER_nondet_int() [L308] COND TRUE blastFlag == 1 [L309] blastFlag = 2 [L313] COND FALSE !(ret <= 0) [L318] COND TRUE \read(s__hit) [L319] s__state = 8656 [L323] s__init_num = 0 [L627] COND FALSE !(! s__s3__tmp__reuse_message) [L656] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND FALSE !(s__state == 8512) [L146] COND FALSE !(s__state == 8513) [L149] COND FALSE !(s__state == 8528) [L152] COND FALSE !(s__state == 8529) [L155] COND FALSE !(s__state == 8544) [L158] COND FALSE !(s__state == 8545) [L161] COND FALSE !(s__state == 8560) [L164] COND FALSE !(s__state == 8561) [L167] COND FALSE !(s__state == 8448) [L170] COND FALSE !(s__state == 8576) [L173] COND FALSE !(s__state == 8577) [L176] COND FALSE !(s__state == 8592) [L179] COND FALSE !(s__state == 8593) [L182] COND FALSE !(s__state == 8608) [L185] COND FALSE !(s__state == 8609) [L188] COND FALSE !(s__state == 8640) [L191] COND FALSE !(s__state == 8641) [L194] COND TRUE s__state == 8656 [L521] s__session__cipher = s__s3__tmp__new_cipher [L522] COND FALSE !(! tmp___9) [L528] ret = __VERIFIER_nondet_int() [L529] COND TRUE blastFlag == 2 [L530] blastFlag = 3 [L534] COND FALSE !(ret <= 0) [L539] s__state = 8672 [L540] s__init_num = 0 [L541] COND FALSE !(! tmp___10) [L627] COND FALSE !(! s__s3__tmp__reuse_message) [L656] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND FALSE !(s__state == 8512) [L146] COND FALSE !(s__state == 8513) [L149] COND FALSE !(s__state == 8528) [L152] COND FALSE !(s__state == 8529) [L155] COND FALSE !(s__state == 8544) [L158] COND FALSE !(s__state == 8545) [L161] COND FALSE !(s__state == 8560) [L164] COND FALSE !(s__state == 8561) [L167] COND FALSE !(s__state == 8448) [L170] COND FALSE !(s__state == 8576) [L173] COND FALSE !(s__state == 8577) [L176] COND FALSE !(s__state == 8592) [L179] COND FALSE !(s__state == 8593) [L182] COND FALSE !(s__state == 8608) [L185] COND FALSE !(s__state == 8609) [L188] COND TRUE s__state == 8640 [L501] ret = __VERIFIER_nondet_int() [L502] COND TRUE blastFlag == 3 [L503] blastFlag = blastFlag + s__state / s__s3__tmp__next_state___0 [L507] COND FALSE !(ret <= 0) [L512] COND TRUE \read(s__hit) [L513] s__state = 3 [L517] s__init_num = 0 [L627] COND FALSE !(! s__s3__tmp__reuse_message) [L656] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND FALSE !(s__state == 8512) [L146] COND FALSE !(s__state == 8513) [L149] COND FALSE !(s__state == 8528) [L152] COND FALSE !(s__state == 8529) [L155] COND FALSE !(s__state == 8544) [L158] COND FALSE !(s__state == 8545) [L161] COND FALSE !(s__state == 8560) [L164] COND FALSE !(s__state == 8561) [L167] COND FALSE !(s__state == 8448) [L170] COND FALSE !(s__state == 8576) [L173] COND FALSE !(s__state == 8577) [L176] COND FALSE !(s__state == 8592) [L179] COND FALSE !(s__state == 8593) [L182] COND FALSE !(s__state == 8608) [L185] COND FALSE !(s__state == 8609) [L188] COND FALSE !(s__state == 8640) [L191] COND FALSE !(s__state == 8641) [L194] COND FALSE !(s__state == 8656) [L197] COND FALSE !(s__state == 8657) [L200] COND FALSE !(s__state == 8672) [L203] COND TRUE s__state == 8673 [L550] ret = __VERIFIER_nondet_int() [L551] COND TRUE blastFlag == 4 [L669] CALL reach_error() [L3] __assert_fail("0", "s3_srvr_3a.BV.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 7.4s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 937 SDtfs, 2765 SDslu, 69 SDs, 0 SdLazy, 1358 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=713occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 383 ConstructedInterpolants, 0 QuantifiedInterpolants, 79781 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 149/149 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...