/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_clnt_2.BV.c.cil-1a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:00:39,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:00:39,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:00:39,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:00:39,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:00:39,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:00:39,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:00:39,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:00:39,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:00:39,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:00:39,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:00:39,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:00:39,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:00:39,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:00:39,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:00:39,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:00:39,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:00:39,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:00:39,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:00:39,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:00:39,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:00:39,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:00:39,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:00:39,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:00:39,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:00:39,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:00:39,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:00:39,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:00:39,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:00:39,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:00:39,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:00:39,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:00:39,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:00:39,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:00:39,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:00:39,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:00:39,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:00:39,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:00:39,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:00:39,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:00:39,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:00:39,601 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 20:00:39,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:00:39,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:00:39,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:00:39,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:00:39,656 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:00:39,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:00:39,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:00:39,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:00:39,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:00:39,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:00:39,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:00:39,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:00:39,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:00:39,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:00:39,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:00:39,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:00:39,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:00:39,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:00:39,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:00:39,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:00:39,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:00:39,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:00:39,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:00:39,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:00:39,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:00:39,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:00:39,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:00:39,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:00:39,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:00:39,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:00:40,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:00:40,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:00:40,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:00:40,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:00:40,103 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:00:40,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c [2020-10-26 20:00:40,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5add73a8b/39a7c56e43a5434bb5d636c809dd03d2/FLAG2f53e0ba1 [2020-10-26 20:00:40,934 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:00:40,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c [2020-10-26 20:00:40,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5add73a8b/39a7c56e43a5434bb5d636c809dd03d2/FLAG2f53e0ba1 [2020-10-26 20:00:41,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5add73a8b/39a7c56e43a5434bb5d636c809dd03d2 [2020-10-26 20:00:41,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:00:41,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:00:41,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:00:41,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:00:41,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:00:41,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:00:41" (1/1) ... [2020-10-26 20:00:41,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd76a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41, skipping insertion in model container [2020-10-26 20:00:41,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:00:41" (1/1) ... [2020-10-26 20:00:41,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:00:41,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:00:41,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:00:41,514 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:00:41,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:00:41,628 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:00:41,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41 WrapperNode [2020-10-26 20:00:41,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:00:41,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:00:41,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:00:41,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:00:41,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41" (1/1) ... [2020-10-26 20:00:41,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41" (1/1) ... [2020-10-26 20:00:41,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41" (1/1) ... [2020-10-26 20:00:41,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41" (1/1) ... [2020-10-26 20:00:41,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41" (1/1) ... [2020-10-26 20:00:41,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41" (1/1) ... [2020-10-26 20:00:41,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41" (1/1) ... [2020-10-26 20:00:41,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:00:41,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:00:41,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:00:41,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:00:41,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41" (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 20:00:41,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:00:41,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:00:41,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:00:41,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-26 20:00:41,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:00:41,782 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:00:41,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:00:41,782 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:00:41,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:00:41,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:00:41,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-26 20:00:41,784 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-26 20:00:41,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:00:41,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:00:41,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:00:41,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:00:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:00:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:00:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:00:42,057 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-26 20:00:42,755 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-26 20:00:42,756 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-26 20:00:42,779 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:00:42,780 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:00:42,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:00:42 BoogieIcfgContainer [2020-10-26 20:00:42,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:00:42,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:00:42,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:00:42,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:00:42,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:00:41" (1/3) ... [2020-10-26 20:00:42,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0e6b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:00:42, skipping insertion in model container [2020-10-26 20:00:42,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:00:41" (2/3) ... [2020-10-26 20:00:42,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0e6b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:00:42, skipping insertion in model container [2020-10-26 20:00:42,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:00:42" (3/3) ... [2020-10-26 20:00:42,798 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-1a.c [2020-10-26 20:00:42,813 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:00:42,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:00:42,837 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:00:42,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:00:42,884 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:00:42,884 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:00:42,884 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:00:42,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:00:42,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:00:42,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:00:42,885 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:00:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-10-26 20:00:42,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-26 20:00:42,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:42,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:00:42,933 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:42,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1167654252, now seen corresponding path program 1 times [2020-10-26 20:00:42,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:42,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827904328] [2020-10-26 20:00:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:43,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:43,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-26 20:00:43,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:00:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-26 20:00:43,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:00:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:00:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:00:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:43,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:43,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:43,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:43,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:00:43,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:43,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:43,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:43,984 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 20:00:43,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827904328] [2020-10-26 20:00:43,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:43,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:43,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435467819] [2020-10-26 20:00:43,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:43,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:44,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:44,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:44,013 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 4 states. [2020-10-26 20:00:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:44,757 INFO L93 Difference]: Finished difference Result 310 states and 526 transitions. [2020-10-26 20:00:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:44,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-26 20:00:44,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:44,771 INFO L225 Difference]: With dead ends: 310 [2020-10-26 20:00:44,771 INFO L226 Difference]: Without dead ends: 130 [2020-10-26 20:00:44,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:00:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-26 20:00:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2020-10-26 20:00:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-26 20:00:44,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 181 transitions. [2020-10-26 20:00:44,837 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 181 transitions. Word has length 31 [2020-10-26 20:00:44,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:44,837 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 181 transitions. [2020-10-26 20:00:44,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 181 transitions. [2020-10-26 20:00:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-26 20:00:44,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:44,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:00:44,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:00:44,841 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:44,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:44,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1736851278, now seen corresponding path program 1 times [2020-10-26 20:00:44,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:44,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166352553] [2020-10-26 20:00:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:44,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:44,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:45,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:45,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:45,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:45,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-26 20:00:45,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:00:45,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-26 20:00:45,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:00:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 20:00:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:45,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:45,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:45,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:45,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:00:45,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:45,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:00:45,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166352553] [2020-10-26 20:00:45,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:45,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:45,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397442240] [2020-10-26 20:00:45,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:45,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:45,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:45,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:45,489 INFO L87 Difference]: Start difference. First operand 122 states and 181 transitions. Second operand 4 states. [2020-10-26 20:00:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:45,845 INFO L93 Difference]: Finished difference Result 325 states and 491 transitions. [2020-10-26 20:00:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:45,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-26 20:00:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:45,849 INFO L225 Difference]: With dead ends: 325 [2020-10-26 20:00:45,849 INFO L226 Difference]: Without dead ends: 222 [2020-10-26 20:00:45,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:00:45,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-26 20:00:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-10-26 20:00:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-26 20:00:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 330 transitions. [2020-10-26 20:00:45,876 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 330 transitions. Word has length 43 [2020-10-26 20:00:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:45,877 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 330 transitions. [2020-10-26 20:00:45,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 330 transitions. [2020-10-26 20:00:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-26 20:00:45,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:45,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-26 20:00:45,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:00:45,881 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:45,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:45,881 INFO L82 PathProgramCache]: Analyzing trace with hash -418959477, now seen corresponding path program 1 times [2020-10-26 20:00:45,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:45,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244173225] [2020-10-26 20:00:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:46,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:46,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:46,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-26 20:00:46,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:00:46,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-26 20:00:46,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:46,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:46,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:00:46,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:00:46,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:46,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:46,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:46,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:46,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:46,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:46,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:46,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-26 20:00:46,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244173225] [2020-10-26 20:00:46,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:46,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:46,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109631207] [2020-10-26 20:00:46,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:46,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:46,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:46,382 INFO L87 Difference]: Start difference. First operand 222 states and 330 transitions. Second operand 4 states. [2020-10-26 20:00:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:46,807 INFO L93 Difference]: Finished difference Result 425 states and 635 transitions. [2020-10-26 20:00:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:46,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-26 20:00:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:46,817 INFO L225 Difference]: With dead ends: 425 [2020-10-26 20:00:46,819 INFO L226 Difference]: Without dead ends: 219 [2020-10-26 20:00:46,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:00:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-26 20:00:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2020-10-26 20:00:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-26 20:00:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 325 transitions. [2020-10-26 20:00:46,862 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 325 transitions. Word has length 57 [2020-10-26 20:00:46,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:46,862 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 325 transitions. [2020-10-26 20:00:46,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:46,862 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 325 transitions. [2020-10-26 20:00:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-26 20:00:46,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:46,870 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-26 20:00:46,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:00:46,870 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:46,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:46,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1441557139, now seen corresponding path program 1 times [2020-10-26 20:00:46,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:46,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292114125] [2020-10-26 20:00:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:46,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:47,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-26 20:00:47,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:00:47,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-26 20:00:47,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:47,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:47,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-26 20:00:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 20:00:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:47,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:47,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:47,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:00:47,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:47,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:00:47,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292114125] [2020-10-26 20:00:47,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:47,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:47,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525018178] [2020-10-26 20:00:47,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:47,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:47,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:47,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:47,249 INFO L87 Difference]: Start difference. First operand 219 states and 325 transitions. Second operand 4 states. [2020-10-26 20:00:47,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:47,767 INFO L93 Difference]: Finished difference Result 422 states and 635 transitions. [2020-10-26 20:00:47,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:47,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-26 20:00:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:47,772 INFO L225 Difference]: With dead ends: 422 [2020-10-26 20:00:47,772 INFO L226 Difference]: Without dead ends: 319 [2020-10-26 20:00:47,774 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 20:00:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-26 20:00:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-10-26 20:00:47,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-26 20:00:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 475 transitions. [2020-10-26 20:00:47,799 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 475 transitions. Word has length 57 [2020-10-26 20:00:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:47,799 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 475 transitions. [2020-10-26 20:00:47,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:47,800 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 475 transitions. [2020-10-26 20:00:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-26 20:00:47,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:47,803 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-26 20:00:47,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:00:47,803 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:47,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:47,804 INFO L82 PathProgramCache]: Analyzing trace with hash -349607703, now seen corresponding path program 1 times [2020-10-26 20:00:47,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:47,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092541084] [2020-10-26 20:00:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:47,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:47,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 20:00:47,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:00:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 20:00:47,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-26 20:00:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 20:00:47,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:48,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:48,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:48,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:48,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:48,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:48,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:48,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-26 20:00:48,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092541084] [2020-10-26 20:00:48,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:48,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:48,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343069941] [2020-10-26 20:00:48,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:48,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:48,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:48,052 INFO L87 Difference]: Start difference. First operand 319 states and 475 transitions. Second operand 4 states. [2020-10-26 20:00:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:48,548 INFO L93 Difference]: Finished difference Result 622 states and 935 transitions. [2020-10-26 20:00:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:48,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-26 20:00:48,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:48,555 INFO L225 Difference]: With dead ends: 622 [2020-10-26 20:00:48,555 INFO L226 Difference]: Without dead ends: 419 [2020-10-26 20:00:48,556 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 20:00:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-10-26 20:00:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2020-10-26 20:00:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-26 20:00:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 626 transitions. [2020-10-26 20:00:48,582 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 626 transitions. Word has length 74 [2020-10-26 20:00:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:48,582 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 626 transitions. [2020-10-26 20:00:48,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 626 transitions. [2020-10-26 20:00:48,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-26 20:00:48,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:48,585 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2020-10-26 20:00:48,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:00:48,585 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:48,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:48,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2012739799, now seen corresponding path program 1 times [2020-10-26 20:00:48,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:48,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006497554] [2020-10-26 20:00:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:49,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 20:00:49,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:00:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-26 20:00:49,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-26 20:00:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:00:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:49,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:49,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:49,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:00:49,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:49,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-26 20:00:49,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006497554] [2020-10-26 20:00:49,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:49,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:49,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399325368] [2020-10-26 20:00:49,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:49,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:49,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:49,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:49,166 INFO L87 Difference]: Start difference. First operand 419 states and 626 transitions. Second operand 4 states. [2020-10-26 20:00:49,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:49,784 INFO L93 Difference]: Finished difference Result 1022 states and 1584 transitions. [2020-10-26 20:00:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:49,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-26 20:00:49,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:49,789 INFO L225 Difference]: With dead ends: 1022 [2020-10-26 20:00:49,790 INFO L226 Difference]: Without dead ends: 615 [2020-10-26 20:00:49,791 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 20:00:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-10-26 20:00:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 583. [2020-10-26 20:00:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-10-26 20:00:49,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 826 transitions. [2020-10-26 20:00:49,835 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 826 transitions. Word has length 92 [2020-10-26 20:00:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:49,837 INFO L481 AbstractCegarLoop]: Abstraction has 583 states and 826 transitions. [2020-10-26 20:00:49,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 826 transitions. [2020-10-26 20:00:49,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-26 20:00:49,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:49,842 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2020-10-26 20:00:49,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:00:49,842 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:49,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1764593305, now seen corresponding path program 1 times [2020-10-26 20:00:49,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:49,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128137797] [2020-10-26 20:00:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:50,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 20:00:50,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:00:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-26 20:00:50,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-26 20:00:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 20:00:50,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:50,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:50,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:50,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:50,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:00:50,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-26 20:00:50,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128137797] [2020-10-26 20:00:50,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:50,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:50,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469419575] [2020-10-26 20:00:50,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:50,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:50,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:50,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:50,223 INFO L87 Difference]: Start difference. First operand 583 states and 826 transitions. Second operand 4 states. [2020-10-26 20:00:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:50,688 INFO L93 Difference]: Finished difference Result 1150 states and 1637 transitions. [2020-10-26 20:00:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:50,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-26 20:00:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:50,695 INFO L225 Difference]: With dead ends: 1150 [2020-10-26 20:00:50,695 INFO L226 Difference]: Without dead ends: 724 [2020-10-26 20:00:50,697 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 20:00:50,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-26 20:00:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2020-10-26 20:00:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-26 20:00:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1028 transitions. [2020-10-26 20:00:50,733 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1028 transitions. Word has length 92 [2020-10-26 20:00:50,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:50,734 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1028 transitions. [2020-10-26 20:00:50,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1028 transitions. [2020-10-26 20:00:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-26 20:00:50,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:50,743 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1] [2020-10-26 20:00:50,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:00:50,744 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:50,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1860707375, now seen corresponding path program 1 times [2020-10-26 20:00:50,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:50,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554732439] [2020-10-26 20:00:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:50,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 20:00:50,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:50,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 20:00:50,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-26 20:00:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 20:00:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:50,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:50,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:50,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:50,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:50,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 20:00:51,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554732439] [2020-10-26 20:00:51,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:51,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:51,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5187490] [2020-10-26 20:00:51,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:51,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:51,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:51,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:51,025 INFO L87 Difference]: Start difference. First operand 724 states and 1028 transitions. Second operand 4 states. [2020-10-26 20:00:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:51,483 INFO L93 Difference]: Finished difference Result 868 states and 1234 transitions. [2020-10-26 20:00:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:51,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-26 20:00:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:51,491 INFO L225 Difference]: With dead ends: 868 [2020-10-26 20:00:51,492 INFO L226 Difference]: Without dead ends: 865 [2020-10-26 20:00:51,493 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 20:00:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2020-10-26 20:00:51,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 865. [2020-10-26 20:00:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-10-26 20:00:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1231 transitions. [2020-10-26 20:00:51,532 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1231 transitions. Word has length 112 [2020-10-26 20:00:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:51,533 INFO L481 AbstractCegarLoop]: Abstraction has 865 states and 1231 transitions. [2020-10-26 20:00:51,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1231 transitions. [2020-10-26 20:00:51,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-26 20:00:51,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:51,537 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 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] [2020-10-26 20:00:51,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:00:51,537 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:51,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:51,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1274540816, now seen corresponding path program 1 times [2020-10-26 20:00:51,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:51,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682174190] [2020-10-26 20:00:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:51,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:51,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 20:00:51,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:00:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-26 20:00:51,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-26 20:00:51,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:00:51,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:51,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:51,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:51,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:51,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:51,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:00:51,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 20:00:51,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682174190] [2020-10-26 20:00:51,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:51,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:51,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958307018] [2020-10-26 20:00:51,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:51,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:51,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:51,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:51,921 INFO L87 Difference]: Start difference. First operand 865 states and 1231 transitions. Second operand 4 states. [2020-10-26 20:00:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:52,418 INFO L93 Difference]: Finished difference Result 2014 states and 2970 transitions. [2020-10-26 20:00:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:52,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-26 20:00:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:52,427 INFO L225 Difference]: With dead ends: 2014 [2020-10-26 20:00:52,427 INFO L226 Difference]: Without dead ends: 1159 [2020-10-26 20:00:52,429 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 20:00:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-10-26 20:00:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1099. [2020-10-26 20:00:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-10-26 20:00:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1609 transitions. [2020-10-26 20:00:52,479 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1609 transitions. Word has length 127 [2020-10-26 20:00:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:52,479 INFO L481 AbstractCegarLoop]: Abstraction has 1099 states and 1609 transitions. [2020-10-26 20:00:52,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:52,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1609 transitions. [2020-10-26 20:00:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-26 20:00:52,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:52,484 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1] [2020-10-26 20:00:52,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:00:52,484 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:52,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:52,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1433325678, now seen corresponding path program 1 times [2020-10-26 20:00:52,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:52,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851328907] [2020-10-26 20:00:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:52,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:52,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 20:00:52,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:00:52,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-26 20:00:52,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-26 20:00:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 20:00:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:52,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:52,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:52,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:52,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:52,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:52,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-26 20:00:52,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851328907] [2020-10-26 20:00:52,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:52,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:52,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144811301] [2020-10-26 20:00:52,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:52,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:52,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:52,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:52,905 INFO L87 Difference]: Start difference. First operand 1099 states and 1609 transitions. Second operand 4 states. [2020-10-26 20:00:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:53,413 INFO L93 Difference]: Finished difference Result 2735 states and 4130 transitions. [2020-10-26 20:00:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:53,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-26 20:00:53,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:53,423 INFO L225 Difference]: With dead ends: 2735 [2020-10-26 20:00:53,423 INFO L226 Difference]: Without dead ends: 1550 [2020-10-26 20:00:53,426 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 20:00:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2020-10-26 20:00:53,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1477. [2020-10-26 20:00:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1477 states. [2020-10-26 20:00:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2113 transitions. [2020-10-26 20:00:53,518 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2113 transitions. Word has length 139 [2020-10-26 20:00:53,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:53,519 INFO L481 AbstractCegarLoop]: Abstraction has 1477 states and 2113 transitions. [2020-10-26 20:00:53,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2113 transitions. [2020-10-26 20:00:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-26 20:00:53,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:53,524 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 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] [2020-10-26 20:00:53,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:00:53,524 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:53,525 INFO L82 PathProgramCache]: Analyzing trace with hash 241496053, now seen corresponding path program 1 times [2020-10-26 20:00:53,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:53,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650216876] [2020-10-26 20:00:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:53,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:53,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 20:00:53,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:00:53,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 20:00:53,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-26 20:00:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:00:53,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:53,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:53,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:53,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:53,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:53,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:53,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-10-26 20:00:53,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650216876] [2020-10-26 20:00:53,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:53,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:53,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521458403] [2020-10-26 20:00:53,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:53,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:53,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:53,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:53,820 INFO L87 Difference]: Start difference. First operand 1477 states and 2113 transitions. Second operand 4 states. [2020-10-26 20:00:54,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:54,293 INFO L93 Difference]: Finished difference Result 3064 states and 4403 transitions. [2020-10-26 20:00:54,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:54,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-26 20:00:54,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:54,303 INFO L225 Difference]: With dead ends: 3064 [2020-10-26 20:00:54,303 INFO L226 Difference]: Without dead ends: 1603 [2020-10-26 20:00:54,309 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 20:00:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2020-10-26 20:00:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1579. [2020-10-26 20:00:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-10-26 20:00:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2245 transitions. [2020-10-26 20:00:54,413 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2245 transitions. Word has length 148 [2020-10-26 20:00:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:54,413 INFO L481 AbstractCegarLoop]: Abstraction has 1579 states and 2245 transitions. [2020-10-26 20:00:54,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2245 transitions. [2020-10-26 20:00:54,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-26 20:00:54,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:54,420 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 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, 1, 1, 1, 1] [2020-10-26 20:00:54,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:00:54,420 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:54,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1168978781, now seen corresponding path program 1 times [2020-10-26 20:00:54,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:54,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245431472] [2020-10-26 20:00:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:54,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:54,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-26 20:00:54,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:00:54,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 20:00:54,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-26 20:00:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:00:54,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:54,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:54,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:54,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:54,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-26 20:00:54,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245431472] [2020-10-26 20:00:54,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:54,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:54,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629365100] [2020-10-26 20:00:54,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:54,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:54,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:54,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:54,724 INFO L87 Difference]: Start difference. First operand 1579 states and 2245 transitions. Second operand 4 states. [2020-10-26 20:00:55,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:55,257 INFO L93 Difference]: Finished difference Result 3280 states and 4690 transitions. [2020-10-26 20:00:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:55,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-26 20:00:55,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:55,269 INFO L225 Difference]: With dead ends: 3280 [2020-10-26 20:00:55,269 INFO L226 Difference]: Without dead ends: 1717 [2020-10-26 20:00:55,273 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 20:00:55,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2020-10-26 20:00:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1693. [2020-10-26 20:00:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1693 states. [2020-10-26 20:00:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2389 transitions. [2020-10-26 20:00:55,377 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2389 transitions. Word has length 165 [2020-10-26 20:00:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:55,377 INFO L481 AbstractCegarLoop]: Abstraction has 1693 states and 2389 transitions. [2020-10-26 20:00:55,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2389 transitions. [2020-10-26 20:00:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-26 20:00:55,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:55,384 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 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, 1] [2020-10-26 20:00:55,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:00:55,384 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:55,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:55,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1482267453, now seen corresponding path program 1 times [2020-10-26 20:00:55,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:55,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315638164] [2020-10-26 20:00:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:55,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-26 20:00:55,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:00:55,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-26 20:00:55,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-26 20:00:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 20:00:55,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:55,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:55,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:55,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:55,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:55,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:55,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:55,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:55,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:55,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-26 20:00:55,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315638164] [2020-10-26 20:00:55,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:55,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:55,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94851349] [2020-10-26 20:00:55,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:55,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:55,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:55,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:55,976 INFO L87 Difference]: Start difference. First operand 1693 states and 2389 transitions. Second operand 4 states. [2020-10-26 20:00:56,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:56,470 INFO L93 Difference]: Finished difference Result 4673 states and 6670 transitions. [2020-10-26 20:00:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:56,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-26 20:00:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:56,489 INFO L225 Difference]: With dead ends: 4673 [2020-10-26 20:00:56,489 INFO L226 Difference]: Without dead ends: 2996 [2020-10-26 20:00:56,495 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 20:00:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-10-26 20:00:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2995. [2020-10-26 20:00:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2995 states. [2020-10-26 20:00:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 4282 transitions. [2020-10-26 20:00:56,624 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 4282 transitions. Word has length 177 [2020-10-26 20:00:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:56,625 INFO L481 AbstractCegarLoop]: Abstraction has 2995 states and 4282 transitions. [2020-10-26 20:00:56,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 4282 transitions. [2020-10-26 20:00:56,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-26 20:00:56,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:56,634 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 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, 1, 1, 1] [2020-10-26 20:00:56,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:00:56,635 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:56,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1553990841, now seen corresponding path program 1 times [2020-10-26 20:00:56,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:56,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788998876] [2020-10-26 20:00:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:56,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:56,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-26 20:00:56,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:00:56,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-26 20:00:56,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:56,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:56,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 20:00:56,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 20:00:56,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:57,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:57,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:57,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:57,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:57,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:00:57,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:57,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-26 20:00:57,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788998876] [2020-10-26 20:00:57,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:57,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:57,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418058127] [2020-10-26 20:00:57,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:57,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:57,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:57,196 INFO L87 Difference]: Start difference. First operand 2995 states and 4282 transitions. Second operand 4 states. [2020-10-26 20:00:57,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:57,866 INFO L93 Difference]: Finished difference Result 7450 states and 10651 transitions. [2020-10-26 20:00:57,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:57,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2020-10-26 20:00:57,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:57,891 INFO L225 Difference]: With dead ends: 7450 [2020-10-26 20:00:57,892 INFO L226 Difference]: Without dead ends: 4471 [2020-10-26 20:00:57,901 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 20:00:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2020-10-26 20:00:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4471. [2020-10-26 20:00:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4471 states. [2020-10-26 20:00:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4471 states to 4471 states and 6377 transitions. [2020-10-26 20:00:58,168 INFO L78 Accepts]: Start accepts. Automaton has 4471 states and 6377 transitions. Word has length 181 [2020-10-26 20:00:58,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:58,169 INFO L481 AbstractCegarLoop]: Abstraction has 4471 states and 6377 transitions. [2020-10-26 20:00:58,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4471 states and 6377 transitions. [2020-10-26 20:00:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-26 20:00:58,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:58,185 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 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, 1] [2020-10-26 20:00:58,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:00:58,185 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:58,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:58,186 INFO L82 PathProgramCache]: Analyzing trace with hash 310523551, now seen corresponding path program 1 times [2020-10-26 20:00:58,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:58,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637293550] [2020-10-26 20:00:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:58,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:58,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-26 20:00:58,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:00:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-26 20:00:58,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-26 20:00:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 20:00:58,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:58,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:58,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:58,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:58,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:58,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2020-10-26 20:00:58,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637293550] [2020-10-26 20:00:58,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:58,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 20:00:58,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019065356] [2020-10-26 20:00:58,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:00:58,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:58,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:00:58,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:00:58,609 INFO L87 Difference]: Start difference. First operand 4471 states and 6377 transitions. Second operand 4 states. [2020-10-26 20:00:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:59,248 INFO L93 Difference]: Finished difference Result 9142 states and 12992 transitions. [2020-10-26 20:00:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 20:00:59,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2020-10-26 20:00:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:59,276 INFO L225 Difference]: With dead ends: 9142 [2020-10-26 20:00:59,276 INFO L226 Difference]: Without dead ends: 4687 [2020-10-26 20:00:59,288 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 20:00:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2020-10-26 20:00:59,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4471. [2020-10-26 20:00:59,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4471 states. [2020-10-26 20:00:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4471 states to 4471 states and 6341 transitions. [2020-10-26 20:00:59,515 INFO L78 Accepts]: Start accepts. Automaton has 4471 states and 6341 transitions. Word has length 183 [2020-10-26 20:00:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:59,516 INFO L481 AbstractCegarLoop]: Abstraction has 4471 states and 6341 transitions. [2020-10-26 20:00:59,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:00:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4471 states and 6341 transitions. [2020-10-26 20:00:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-26 20:00:59,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:59,529 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 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] [2020-10-26 20:00:59,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 20:00:59,529 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:59,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:59,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1143359639, now seen corresponding path program 1 times [2020-10-26 20:00:59,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:59,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856225249] [2020-10-26 20:00:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 20:00:59,574 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 20:00:59,577 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 20:00:59,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 20:00:59,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:00:59 BoogieIcfgContainer [2020-10-26 20:00:59,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:00:59,661 INFO L168 Benchmark]: Toolchain (without parser) took 18448.65 ms. Allocated memory was 151.0 MB in the beginning and 429.9 MB in the end (delta: 278.9 MB). Free memory was 126.2 MB in the beginning and 275.1 MB in the end (delta: -149.0 MB). Peak memory consumption was 131.0 MB. Max. memory is 8.0 GB. [2020-10-26 20:00:59,662 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:00:59,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.09 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 111.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-26 20:00:59,669 INFO L168 Benchmark]: Boogie Preprocessor took 60.63 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 108.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-26 20:00:59,669 INFO L168 Benchmark]: RCFGBuilder took 1091.29 ms. Allocated memory is still 151.0 MB. Free memory was 108.9 MB in the beginning and 94.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2020-10-26 20:00:59,673 INFO L168 Benchmark]: TraceAbstraction took 16870.41 ms. Allocated memory was 151.0 MB in the beginning and 429.9 MB in the end (delta: 278.9 MB). Free memory was 93.8 MB in the beginning and 275.1 MB in the end (delta: -181.3 MB). Peak memory consumption was 97.1 MB. Max. memory is 8.0 GB. [2020-10-26 20:00:59,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 412.09 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 111.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.63 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 108.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1091.29 ms. Allocated memory is still 151.0 MB. Free memory was 108.9 MB in the beginning and 94.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16870.41 ms. Allocated memory was 151.0 MB in the beginning and 429.9 MB in the end (delta: 278.9 MB). Free memory was 93.8 MB in the beginning and 275.1 MB in the end (delta: -181.3 MB). Peak memory consumption was 97.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 358. Possible FailurePath: [L619] int __retres1 ; [L623] CALL ssl3_connect() [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [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_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [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 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 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) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND FALSE !(s__bbio != s__wbio) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] ag_Y = 61087 [L319] s__state = 4416 [L320] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L324] ret = __VERIFIER_nondet_int() [L325] COND TRUE blastFlag == 3 [L326] blastFlag = 4 [L330] COND FALSE !(ret <= 0) [L335] s__state = 4432 [L336] ag_X = (unsigned short)65535 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L347] ret = __VERIFIER_nondet_int() [L348] COND FALSE !(blastFlag == 5) [L353] COND FALSE !(ret <= 0) [L358] s__state = ag_X ^ ag_Y [L359] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND FALSE !(s__bbio != s__wbio) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] ag_Y = 61087 [L319] s__state = 4416 [L320] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L324] ret = __VERIFIER_nondet_int() [L325] COND FALSE !(blastFlag == 3) [L330] COND FALSE !(ret <= 0) [L335] s__state = 4432 [L336] ag_X = (unsigned short)65535 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L347] ret = __VERIFIER_nondet_int() [L348] COND TRUE blastFlag == 5 [L610] CALL reach_error() [L3] __assert_fail("0", "s3_clnt_2.BV.c.cil-1a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 138 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.7s, OverallIterations: 16, TraceHistogramMax: 11, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2808 SDtfs, 4756 SDslu, 123 SDs, 0 SdLazy, 2613 SolverSat, 277 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4471occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 438 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 1881 NumberOfCodeBlocks, 1881 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1663 ConstructedInterpolants, 0 QuantifiedInterpolants, 510817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 2809/2809 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...