/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/bitvector/s3_srvr_3a_alt.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:34:20,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:34:20,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:34:20,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:34:20,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:34:20,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:34:20,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:34:20,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:34:20,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:34:20,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:34:20,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:34:20,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:34:20,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:34:20,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:34:20,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:34:20,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:34:20,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:34:20,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:34:20,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:34:20,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:34:20,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:34:20,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:34:20,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:34:20,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:34:20,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:34:20,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:34:20,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:34:20,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:34:20,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:34:20,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:34:20,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:34:20,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:34:20,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:34:20,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:34:20,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:34:20,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:34:20,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:34:20,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:34:20,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:34:20,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:34:20,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:34:20,612 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 [2020-10-14 18:34:20,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:34:20,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:34:20,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:34:20,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:34:20,657 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:34:20,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:34:20,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:34:20,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:34:20,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:34:20,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:34:20,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:34:20,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:34:20,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:34:20,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:34:20,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:34:20,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:34:20,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:34:20,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:34:20,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:34:20,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:34:20,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:34:20,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:34:20,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:34:20,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:34:20,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:34:20,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:34:20,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:34:20,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:34:20,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:34:20,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:34:21,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:34:21,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:34:21,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:34:21,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:34:21,022 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:34:21,023 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2020-10-14 18:34:21,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc7830671/1950925de86e4fc9972cd5e6a6a3a889/FLAG5e1a1ed20 [2020-10-14 18:34:21,588 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:34:21,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2020-10-14 18:34:21,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc7830671/1950925de86e4fc9972cd5e6a6a3a889/FLAG5e1a1ed20 [2020-10-14 18:34:21,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc7830671/1950925de86e4fc9972cd5e6a6a3a889 [2020-10-14 18:34:21,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:34:21,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:34:21,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:34:21,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:34:21,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:34:21,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:34:21" (1/1) ... [2020-10-14 18:34:21,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a56ccca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:21, skipping insertion in model container [2020-10-14 18:34:21,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:34:21" (1/1) ... [2020-10-14 18:34:21,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:34:22,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:34:22,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:34:22,317 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:34:22,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:34:22,496 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:34:22,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:22 WrapperNode [2020-10-14 18:34:22,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:34:22,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:34:22,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:34:22,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:34:22,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:22" (1/1) ... [2020-10-14 18:34:22,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:22" (1/1) ... [2020-10-14 18:34:22,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:22" (1/1) ... [2020-10-14 18:34:22,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:22" (1/1) ... [2020-10-14 18:34:22,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:22" (1/1) ... [2020-10-14 18:34:22,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:22" (1/1) ... [2020-10-14 18:34:22,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:22" (1/1) ... [2020-10-14 18:34:22,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:34:22,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:34:22,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:34:22,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:34:22,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:22" (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 [2020-10-14 18:34:22,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:34:22,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:34:22,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 18:34:22,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:34:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:34:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 18:34:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:34:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 18:34:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 18:34:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:34:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:34:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:34:22,861 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 18:34:23,462 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-14 18:34:23,463 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-14 18:34:23,474 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:34:23,475 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 18:34:23,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:34:23 BoogieIcfgContainer [2020-10-14 18:34:23,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:34:23,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:34:23,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:34:23,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:34:23,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:34:21" (1/3) ... [2020-10-14 18:34:23,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232f19ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:34:23, skipping insertion in model container [2020-10-14 18:34:23,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:22" (2/3) ... [2020-10-14 18:34:23,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232f19ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:34:23, skipping insertion in model container [2020-10-14 18:34:23,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:34:23" (3/3) ... [2020-10-14 18:34:23,489 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a_alt.BV.c.cil.c [2020-10-14 18:34:23,500 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:34:23,508 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:34:23,523 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:34:23,549 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:34:23,550 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:34:23,550 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:34:23,550 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:34:23,550 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:34:23,550 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:34:23,551 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:34:23,551 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:34:23,574 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-10-14 18:34:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 18:34:23,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:23,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:23,586 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:23,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:23,591 INFO L82 PathProgramCache]: Analyzing trace with hash -459257302, now seen corresponding path program 1 times [2020-10-14 18:34:23,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:23,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088948606] [2020-10-14 18:34:23,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:23,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:24,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:24,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:24,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 18:34:24,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:34:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-14 18:34:24,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:24,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 18:34:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 18:34:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:34:24,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:24,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:24,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:24,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:24,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:24,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:34:24,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088948606] [2020-10-14 18:34:24,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:34:24,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 18:34:24,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628804575] [2020-10-14 18:34:24,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 18:34:24,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:24,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 18:34:24,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:34:24,360 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 3 states. [2020-10-14 18:34:24,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:24,467 INFO L93 Difference]: Finished difference Result 405 states and 693 transitions. [2020-10-14 18:34:24,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 18:34:24,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-10-14 18:34:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:24,486 INFO L225 Difference]: With dead ends: 405 [2020-10-14 18:34:24,486 INFO L226 Difference]: Without dead ends: 243 [2020-10-14 18:34:24,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:34:24,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-14 18:34:24,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-10-14 18:34:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-14 18:34:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 372 transitions. [2020-10-14 18:34:24,569 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 372 transitions. Word has length 49 [2020-10-14 18:34:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:24,570 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 372 transitions. [2020-10-14 18:34:24,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 18:34:24,570 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 372 transitions. [2020-10-14 18:34:24,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 18:34:24,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:24,578 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:24,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:34:24,578 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:24,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:24,579 INFO L82 PathProgramCache]: Analyzing trace with hash -155453879, now seen corresponding path program 1 times [2020-10-14 18:34:24,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:24,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446983366] [2020-10-14 18:34:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:24,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:24,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:24,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:24,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 18:34:24,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:34:24,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 18:34:24,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:24,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:24,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 18:34:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 18:34:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:24,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:24,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:24,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:24,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:24,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:24,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:24,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:24,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:24,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:34:24,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446983366] [2020-10-14 18:34:24,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:34:24,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 18:34:24,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661877031] [2020-10-14 18:34:24,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 18:34:24,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:24,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 18:34:24,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:34:24,876 INFO L87 Difference]: Start difference. First operand 243 states and 372 transitions. Second operand 3 states. [2020-10-14 18:34:24,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:24,947 INFO L93 Difference]: Finished difference Result 473 states and 731 transitions. [2020-10-14 18:34:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 18:34:24,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-10-14 18:34:24,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:24,952 INFO L225 Difference]: With dead ends: 473 [2020-10-14 18:34:24,953 INFO L226 Difference]: Without dead ends: 357 [2020-10-14 18:34:24,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:34:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-14 18:34:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2020-10-14 18:34:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-14 18:34:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 548 transitions. [2020-10-14 18:34:24,994 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 548 transitions. Word has length 65 [2020-10-14 18:34:24,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:24,995 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 548 transitions. [2020-10-14 18:34:24,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 18:34:24,995 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 548 transitions. [2020-10-14 18:34:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 18:34:25,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:25,000 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:25,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:34:25,001 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:25,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1411293160, now seen corresponding path program 1 times [2020-10-14 18:34:25,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:25,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042793737] [2020-10-14 18:34:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:25,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:25,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:25,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 18:34:25,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:34:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 18:34:25,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:25,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 18:34:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 18:34:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:25,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:25,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:25,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:25,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:25,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:25,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:25,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:25,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:34:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 18:34:25,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042793737] [2020-10-14 18:34:25,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:34:25,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 18:34:25,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39282190] [2020-10-14 18:34:25,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 18:34:25,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:25,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 18:34:25,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:34:25,351 INFO L87 Difference]: Start difference. First operand 357 states and 548 transitions. Second operand 3 states. [2020-10-14 18:34:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:25,609 INFO L93 Difference]: Finished difference Result 869 states and 1371 transitions. [2020-10-14 18:34:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 18:34:25,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-10-14 18:34:25,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:25,614 INFO L225 Difference]: With dead ends: 869 [2020-10-14 18:34:25,614 INFO L226 Difference]: Without dead ends: 516 [2020-10-14 18:34:25,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:34:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-14 18:34:25,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 501. [2020-10-14 18:34:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-10-14 18:34:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 794 transitions. [2020-10-14 18:34:25,647 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 794 transitions. Word has length 86 [2020-10-14 18:34:25,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:25,648 INFO L479 AbstractCegarLoop]: Abstraction has 501 states and 794 transitions. [2020-10-14 18:34:25,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 18:34:25,648 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 794 transitions. [2020-10-14 18:34:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 18:34:25,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:25,653 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:25,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:34:25,653 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:25,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:25,654 INFO L82 PathProgramCache]: Analyzing trace with hash 852679283, now seen corresponding path program 1 times [2020-10-14 18:34:25,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:25,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344294960] [2020-10-14 18:34:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:25,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:25,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:25,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 18:34:25,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 18:34:25,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:25,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 18:34:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 18:34:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:25,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:25,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:25,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:25,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:25,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:25,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-14 18:34:25,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344294960] [2020-10-14 18:34:25,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:34:25,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 18:34:25,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086587367] [2020-10-14 18:34:25,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 18:34:25,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:25,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 18:34:25,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:34:25,906 INFO L87 Difference]: Start difference. First operand 501 states and 794 transitions. Second operand 3 states. [2020-10-14 18:34:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:25,958 INFO L93 Difference]: Finished difference Result 989 states and 1575 transitions. [2020-10-14 18:34:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 18:34:25,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2020-10-14 18:34:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:25,963 INFO L225 Difference]: With dead ends: 989 [2020-10-14 18:34:25,964 INFO L226 Difference]: Without dead ends: 663 [2020-10-14 18:34:25,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:34:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-10-14 18:34:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2020-10-14 18:34:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-10-14 18:34:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1053 transitions. [2020-10-14 18:34:25,989 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1053 transitions. Word has length 114 [2020-10-14 18:34:25,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:25,990 INFO L479 AbstractCegarLoop]: Abstraction has 663 states and 1053 transitions. [2020-10-14 18:34:25,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 18:34:25,990 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1053 transitions. [2020-10-14 18:34:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 18:34:25,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:25,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:25,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:34:25,995 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:25,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:25,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1449286990, now seen corresponding path program 1 times [2020-10-14 18:34:25,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:25,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849728664] [2020-10-14 18:34:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:26,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:26,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:26,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:34:26,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 18:34:26,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:26,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 18:34:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 18:34:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:26,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:26,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:26,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:26,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:26,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:26,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:26,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:26,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:26,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:26,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-14 18:34:26,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849728664] [2020-10-14 18:34:26,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:34:26,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 18:34:26,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822718790] [2020-10-14 18:34:26,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 18:34:26,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:26,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 18:34:26,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:34:26,174 INFO L87 Difference]: Start difference. First operand 663 states and 1053 transitions. Second operand 3 states. [2020-10-14 18:34:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:26,237 INFO L93 Difference]: Finished difference Result 827 states and 1315 transitions. [2020-10-14 18:34:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 18:34:26,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-10-14 18:34:26,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:26,244 INFO L225 Difference]: With dead ends: 827 [2020-10-14 18:34:26,244 INFO L226 Difference]: Without dead ends: 825 [2020-10-14 18:34:26,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:34:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-10-14 18:34:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2020-10-14 18:34:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-10-14 18:34:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1313 transitions. [2020-10-14 18:34:26,274 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1313 transitions. Word has length 126 [2020-10-14 18:34:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:26,275 INFO L479 AbstractCegarLoop]: Abstraction has 825 states and 1313 transitions. [2020-10-14 18:34:26,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 18:34:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1313 transitions. [2020-10-14 18:34:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 18:34:26,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:26,280 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2020-10-14 18:34:26,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:34:26,280 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:26,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:26,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1309687044, now seen corresponding path program 1 times [2020-10-14 18:34:26,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:26,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790433791] [2020-10-14 18:34:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:26,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790433791] [2020-10-14 18:34:26,346 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-14 18:34:26,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:34:26,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-14 18:34:26,347 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-14 18:34:26,347 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:34:26,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:34:26,389 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-14 18:34:26,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:34:26 BoogieIcfgContainer [2020-10-14 18:34:26,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:34:26,393 INFO L168 Benchmark]: Toolchain (without parser) took 4415.85 ms. Allocated memory was 148.4 MB in the beginning and 281.5 MB in the end (delta: 133.2 MB). Free memory was 103.8 MB in the beginning and 162.2 MB in the end (delta: -58.3 MB). Peak memory consumption was 74.8 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:26,394 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 18:34:26,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.61 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 179.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:26,396 INFO L168 Benchmark]: Boogie Preprocessor took 84.10 ms. Allocated memory is still 204.5 MB. Free memory was 179.7 MB in the beginning and 176.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:26,397 INFO L168 Benchmark]: RCFGBuilder took 897.27 ms. Allocated memory is still 204.5 MB. Free memory was 176.6 MB in the beginning and 127.1 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:26,398 INFO L168 Benchmark]: TraceAbstraction took 2907.51 ms. Allocated memory was 204.5 MB in the beginning and 281.5 MB in the end (delta: 77.1 MB). Free memory was 126.1 MB in the beginning and 162.2 MB in the end (delta: -36.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:26,402 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 521.61 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 179.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.10 ms. Allocated memory is still 204.5 MB. Free memory was 179.7 MB in the beginning and 176.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 897.27 ms. Allocated memory is still 204.5 MB. Free memory was 176.6 MB in the beginning and 127.1 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2907.51 ms. Allocated memory was 204.5 MB in the beginning and 281.5 MB in the end (delta: 77.1 MB). Free memory was 126.1 MB in the beginning and 162.2 MB in the end (delta: -36.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 668]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseAnd at line 83. Possible FailurePath: [L677] int s ; [L678] int tmp ; [L682] s = 8464 [L683] CALL ssl3_accept(s) [L10] int s__info_callback = __VERIFIER_nondet_int(); [L11] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L12] int s__state ; [L13] int s__new_session ; [L14] int s__server ; [L15] int s__version = __VERIFIER_nondet_int(); [L16] int s__type ; [L17] int s__init_num ; [L18] int s__hit = __VERIFIER_nondet_int(); [L19] int s__rwstate ; [L20] int s__init_buf___0 ; [L21] int s__debug = __VERIFIER_nondet_int(); [L22] int s__shutdown ; [L23] int s__cert = __VERIFIER_nondet_int(); [L24] int s__options = __VERIFIER_nondet_int(); [L25] int s__verify_mode = __VERIFIER_nondet_int(); [L26] int s__session__peer = __VERIFIER_nondet_int(); [L27] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int(); [L28] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L29] int s__ctx__stats__sess_accept_renegotiate ; [L30] int s__ctx__stats__sess_accept ; [L31] unsigned int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_uint(); [L32] int s__s3__tmp__cert_request ; [L33] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__use_rsa_tmp ; [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int buf ; [L41] unsigned long l ; [L42] unsigned long Time ; [L43] unsigned long tmp ; [L44] int cb ; [L45] long num1 ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int got_new_session ; [L51] int tmp___1 = __VERIFIER_nondet_int(); [L52] int tmp___2 = __VERIFIER_nondet_int(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 ; [L58] long tmp___8 = __VERIFIER_nondet_long(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int tmp___10 = __VERIFIER_nondet_int(); [L61] int blastFlag ; [L62] int __retres67 ; [L65] s__state = initial_state [L66] blastFlag = 0 [L67] tmp = __VERIFIER_nondet_int() [L68] Time = tmp [L69] cb = 0 [L70] ret = -1 [L71] skip = 0 [L72] got_new_session = 0 [L73] COND TRUE s__info_callback != 0 [L74] cb = s__info_callback [L82] s__in_handshake = s__in_handshake + 1 [L83] COND FALSE !(tmp___1 & 12288) [L92] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L287] s__shutdown = 0 [L288] ret = __VERIFIER_nondet_int() [L289] COND TRUE blastFlag == 0 [L290] blastFlag = 1 [L294] COND FALSE !(ret <= 0) [L299] got_new_session = 1 [L300] s__state = 8496 [L301] s__init_num = 0 [L626] COND FALSE !(! s__s3__tmp__reuse_message) [L655] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L305] ret = __VERIFIER_nondet_int() [L306] COND TRUE blastFlag == 1 [L307] blastFlag = 2 [L311] COND FALSE !(ret <= 0) [L316] COND TRUE \read(s__hit) [L317] s__state = 8656 [L321] s__init_num = 0 [L626] COND FALSE !(! s__s3__tmp__reuse_message) [L655] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND FALSE !(s__state == 8560) [L162] COND FALSE !(s__state == 8561) [L165] COND FALSE !(s__state == 8448) [L168] COND FALSE !(s__state == 8576) [L171] COND FALSE !(s__state == 8577) [L174] COND FALSE !(s__state == 8592) [L177] COND FALSE !(s__state == 8593) [L180] COND FALSE !(s__state == 8608) [L183] COND FALSE !(s__state == 8609) [L186] COND FALSE !(s__state == 8640) [L189] COND FALSE !(s__state == 8641) [L192] COND TRUE s__state == 8656 [L520] s__session__cipher = s__s3__tmp__new_cipher [L521] COND FALSE !(! tmp___9) [L527] ret = __VERIFIER_nondet_int() [L528] COND TRUE blastFlag == 2 [L529] blastFlag = 3 [L533] COND FALSE !(ret <= 0) [L538] s__state = 8672 [L539] s__init_num = 0 [L540] COND FALSE !(! tmp___10) [L626] COND FALSE !(! s__s3__tmp__reuse_message) [L655] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND FALSE !(s__state == 8560) [L162] COND FALSE !(s__state == 8561) [L165] COND FALSE !(s__state == 8448) [L168] COND FALSE !(s__state == 8576) [L171] COND FALSE !(s__state == 8577) [L174] COND FALSE !(s__state == 8592) [L177] COND FALSE !(s__state == 8593) [L180] COND FALSE !(s__state == 8608) [L183] COND FALSE !(s__state == 8609) [L186] COND TRUE s__state == 8640 [L500] ret = __VERIFIER_nondet_int() [L501] COND TRUE blastFlag == 3 [L502] blastFlag = blastFlag + s__state / s__s3__tmp__next_state___0 [L506] COND FALSE !(ret <= 0) [L511] COND TRUE \read(s__hit) [L512] s__state = 3 [L516] s__init_num = 0 [L626] COND FALSE !(! s__s3__tmp__reuse_message) [L655] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND FALSE !(s__state == 8560) [L162] COND FALSE !(s__state == 8561) [L165] COND TRUE s__state == 8448 [L439] COND FALSE !(num1 > 0L) [L452] s__state = s__s3__tmp__next_state___0 [L626] COND FALSE !(! s__s3__tmp__reuse_message) [L655] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND FALSE !(s__state == 8560) [L162] COND FALSE !(s__state == 8561) [L165] COND FALSE !(s__state == 8448) [L168] COND FALSE !(s__state == 8576) [L171] COND FALSE !(s__state == 8577) [L174] COND FALSE !(s__state == 8592) [L177] COND FALSE !(s__state == 8593) [L180] COND FALSE !(s__state == 8608) [L183] COND FALSE !(s__state == 8609) [L186] COND FALSE !(s__state == 8640) [L189] COND FALSE !(s__state == 8641) [L192] COND FALSE !(s__state == 8656) [L195] COND FALSE !(s__state == 8657) [L198] COND TRUE s__state == 8672 [L549] ret = __VERIFIER_nondet_int() [L550] COND TRUE blastFlag == 4 [L668] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 146 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1010 SDtfs, 692 SDslu, 794 SDs, 0 SdLazy, 176 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=825occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 632 NumberOfCodeBlocks, 632 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 83605 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 240/240 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...