/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:10:38,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:10:38,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:10:38,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:10:38,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:10:38,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:10:38,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:10:38,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:10:38,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:10:38,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:10:38,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:10:38,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:10:38,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:10:38,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:10:38,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:10:38,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:10:38,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:10:38,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:10:38,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:10:38,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:10:38,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:10:38,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:10:38,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:10:38,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:10:38,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:10:38,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:10:38,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:10:38,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:10:38,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:10:38,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:10:38,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:10:38,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:10:38,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:10:38,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:10:38,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:10:38,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:10:38,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:10:38,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:10:38,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:10:38,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:10:38,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:10:38,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:10:38,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:10:38,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:10:38,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:10:38,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:10:38,997 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:10:38,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:10:38,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:10:38,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:10:38,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:10:38,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:10:38,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:10:38,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:10:38,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:10:38,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:10:38,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:10:38,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:10:38,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:10:39,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:10:39,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:10:39,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:10:39,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:10:39,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:10:39,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:10:39,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:10:39,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:10:39,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:10:39,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:10:39,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:10:39,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:10:39,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:10:39,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:10:39,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:10:39,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:10:39,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:10:39,477 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:10:39,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 11:10:39,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb5997823/78b08ae9c325462fa6586ba09577455e/FLAGaabb6fe96 [2020-09-25 11:10:40,164 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:10:40,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 11:10:40,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb5997823/78b08ae9c325462fa6586ba09577455e/FLAGaabb6fe96 [2020-09-25 11:10:40,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb5997823/78b08ae9c325462fa6586ba09577455e [2020-09-25 11:10:40,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:10:40,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:10:40,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:40,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:10:40,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:10:40,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:40" (1/1) ... [2020-09-25 11:10:40,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2180e205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:40, skipping insertion in model container [2020-09-25 11:10:40,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:40" (1/1) ... [2020-09-25 11:10:40,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:10:40,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:10:40,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:40,891 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:10:41,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:41,110 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:10:41,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:41 WrapperNode [2020-09-25 11:10:41,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:41,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:10:41,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:10:41,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:10:41,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:41" (1/1) ... [2020-09-25 11:10:41,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:41" (1/1) ... [2020-09-25 11:10:41,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:41" (1/1) ... [2020-09-25 11:10:41,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:41" (1/1) ... [2020-09-25 11:10:41,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:41" (1/1) ... [2020-09-25 11:10:41,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:41" (1/1) ... [2020-09-25 11:10:41,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:41" (1/1) ... [2020-09-25 11:10:41,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:10:41,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:10:41,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:10:41,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:10:41,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:41" (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 [2020-09-25 11:10:41,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:10:41,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:10:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 11:10:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:10:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:10:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 11:10:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:10:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 11:10:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 11:10:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:10:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:10:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:10:41,554 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 11:10:42,196 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 11:10:42,197 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 11:10:42,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:10:42,215 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:10:42,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:42 BoogieIcfgContainer [2020-09-25 11:10:42,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:10:42,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:10:42,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:10:42,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:10:42,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:10:40" (1/3) ... [2020-09-25 11:10:42,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee1af4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:42, skipping insertion in model container [2020-09-25 11:10:42,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:41" (2/3) ... [2020-09-25 11:10:42,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee1af4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:42, skipping insertion in model container [2020-09-25 11:10:42,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:42" (3/3) ... [2020-09-25 11:10:42,235 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-09-25 11:10:42,247 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:10:42,258 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:10:42,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:10:42,315 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:10:42,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:10:42,315 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:10:42,315 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:10:42,316 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:10:42,316 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:10:42,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:10:42,316 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:10:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-09-25 11:10:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 11:10:42,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:42,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:42,369 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:42,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-09-25 11:10:42,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:42,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201776494] [2020-09-25 11:10:42,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:42,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:44,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:44,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:44,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 11:10:44,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:44,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1591 [2020-09-25 11:10:44,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:44,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:10:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:10:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 11:10:44,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:10:44,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:44,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:44,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:44,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:44,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:44,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:44,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:44,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201776494] [2020-09-25 11:10:44,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:44,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:10:44,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812434886] [2020-09-25 11:10:44,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:10:44,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:44,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:10:44,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:10:44,519 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 6 states. [2020-09-25 11:10:45,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:45,049 INFO L93 Difference]: Finished difference Result 802 states and 1073 transitions. [2020-09-25 11:10:45,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:10:45,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-25 11:10:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:45,075 INFO L225 Difference]: With dead ends: 802 [2020-09-25 11:10:45,075 INFO L226 Difference]: Without dead ends: 459 [2020-09-25 11:10:45,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:10:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-09-25 11:10:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2020-09-25 11:10:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-09-25 11:10:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 535 transitions. [2020-09-25 11:10:45,213 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 535 transitions. Word has length 158 [2020-09-25 11:10:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:45,216 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 535 transitions. [2020-09-25 11:10:45,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:10:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 535 transitions. [2020-09-25 11:10:45,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 11:10:45,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:45,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:45,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:10:45,229 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:45,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:45,230 INFO L82 PathProgramCache]: Analyzing trace with hash 796395907, now seen corresponding path program 1 times [2020-09-25 11:10:45,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:45,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379577827] [2020-09-25 11:10:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:45,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:45,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 11:10:47,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:10:47,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1808 [2020-09-25 11:10:47,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:10:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:10:47,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 11:10:47,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:47,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:47,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:47,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:47,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:47,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379577827] [2020-09-25 11:10:47,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:47,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:10:47,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859204788] [2020-09-25 11:10:47,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:10:47,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:47,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:10:47,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:10:47,212 INFO L87 Difference]: Start difference. First operand 444 states and 535 transitions. Second operand 6 states. [2020-09-25 11:10:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:47,463 INFO L93 Difference]: Finished difference Result 783 states and 972 transitions. [2020-09-25 11:10:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:10:47,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-25 11:10:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:47,467 INFO L225 Difference]: With dead ends: 783 [2020-09-25 11:10:47,468 INFO L226 Difference]: Without dead ends: 482 [2020-09-25 11:10:47,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:10:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-25 11:10:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 469. [2020-09-25 11:10:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-09-25 11:10:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 568 transitions. [2020-09-25 11:10:47,488 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 568 transitions. Word has length 166 [2020-09-25 11:10:47,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:47,489 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 568 transitions. [2020-09-25 11:10:47,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:10:47,489 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 568 transitions. [2020-09-25 11:10:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 11:10:47,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:47,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:47,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:10:47,492 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:47,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:47,493 INFO L82 PathProgramCache]: Analyzing trace with hash 467731815, now seen corresponding path program 1 times [2020-09-25 11:10:47,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:47,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172376675] [2020-09-25 11:10:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:10:48,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1081 [2020-09-25 11:10:48,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:10:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:10:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 11:10:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:48,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:48,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:48,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172376675] [2020-09-25 11:10:48,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:48,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:10:48,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992653131] [2020-09-25 11:10:48,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:10:48,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:48,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:10:48,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:10:48,728 INFO L87 Difference]: Start difference. First operand 469 states and 568 transitions. Second operand 7 states. [2020-09-25 11:10:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:49,054 INFO L93 Difference]: Finished difference Result 852 states and 1065 transitions. [2020-09-25 11:10:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:10:49,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-25 11:10:49,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:49,060 INFO L225 Difference]: With dead ends: 852 [2020-09-25 11:10:49,064 INFO L226 Difference]: Without dead ends: 526 [2020-09-25 11:10:49,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:10:49,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-09-25 11:10:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 491. [2020-09-25 11:10:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-25 11:10:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 598 transitions. [2020-09-25 11:10:49,090 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 598 transitions. Word has length 167 [2020-09-25 11:10:49,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:49,092 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 598 transitions. [2020-09-25 11:10:49,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:10:49,092 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 598 transitions. [2020-09-25 11:10:49,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 11:10:49,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:49,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:49,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:10:49,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:49,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:49,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1852412155, now seen corresponding path program 1 times [2020-09-25 11:10:49,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:49,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975926249] [2020-09-25 11:10:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:50,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 11:10:50,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:10:50,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-09-25 11:10:50,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:50,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-25 11:10:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:10:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:50,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:50,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:50,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:50,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:50,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:50,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:50,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:50,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:10:50,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975926249] [2020-09-25 11:10:50,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:50,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:50,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530315576] [2020-09-25 11:10:50,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:50,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:50,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:50,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:50,454 INFO L87 Difference]: Start difference. First operand 491 states and 598 transitions. Second operand 3 states. [2020-09-25 11:10:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:50,517 INFO L93 Difference]: Finished difference Result 855 states and 1066 transitions. [2020-09-25 11:10:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:50,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2020-09-25 11:10:50,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:50,520 INFO L225 Difference]: With dead ends: 855 [2020-09-25 11:10:50,521 INFO L226 Difference]: Without dead ends: 507 [2020-09-25 11:10:50,522 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 [2020-09-25 11:10:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-25 11:10:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2020-09-25 11:10:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-25 11:10:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 614 transitions. [2020-09-25 11:10:50,536 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 614 transitions. Word has length 180 [2020-09-25 11:10:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:50,537 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 614 transitions. [2020-09-25 11:10:50,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:50,537 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 614 transitions. [2020-09-25 11:10:50,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 11:10:50,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:50,540 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:50,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:10:50,540 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:50,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:50,541 INFO L82 PathProgramCache]: Analyzing trace with hash -309243059, now seen corresponding path program 1 times [2020-09-25 11:10:50,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:50,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035620618] [2020-09-25 11:10:50,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:51,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:51,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 11:10:51,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:10:51,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 812 [2020-09-25 11:10:51,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:51,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-09-25 11:10:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 11:10:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:51,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:51,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:51,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:51,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:51,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:51,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:51,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:51,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:51,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035620618] [2020-09-25 11:10:51,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:51,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:51,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777638758] [2020-09-25 11:10:51,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:51,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:51,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:51,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:51,464 INFO L87 Difference]: Start difference. First operand 507 states and 614 transitions. Second operand 3 states. [2020-09-25 11:10:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:51,483 INFO L93 Difference]: Finished difference Result 855 states and 1065 transitions. [2020-09-25 11:10:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:51,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-09-25 11:10:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:51,487 INFO L225 Difference]: With dead ends: 855 [2020-09-25 11:10:51,487 INFO L226 Difference]: Without dead ends: 507 [2020-09-25 11:10:51,488 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 [2020-09-25 11:10:51,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-25 11:10:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2020-09-25 11:10:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-25 11:10:51,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 610 transitions. [2020-09-25 11:10:51,503 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 610 transitions. Word has length 181 [2020-09-25 11:10:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:51,503 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 610 transitions. [2020-09-25 11:10:51,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:51,504 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 610 transitions. [2020-09-25 11:10:51,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 11:10:51,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:51,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:51,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:10:51,507 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:51,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:51,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1474841658, now seen corresponding path program 1 times [2020-09-25 11:10:51,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:51,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79210574] [2020-09-25 11:10:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:51,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:52,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 11:10:52,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-09-25 11:10:52,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:52,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-09-25 11:10:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:10:52,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:52,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:52,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:52,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:52,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:52,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:52,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:52,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:52,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:52,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:52,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79210574] [2020-09-25 11:10:52,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:52,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:52,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469583534] [2020-09-25 11:10:52,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:52,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:52,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:52,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:52,265 INFO L87 Difference]: Start difference. First operand 507 states and 610 transitions. Second operand 3 states. [2020-09-25 11:10:52,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:52,306 INFO L93 Difference]: Finished difference Result 862 states and 1065 transitions. [2020-09-25 11:10:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:52,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-09-25 11:10:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:52,312 INFO L225 Difference]: With dead ends: 862 [2020-09-25 11:10:52,312 INFO L226 Difference]: Without dead ends: 514 [2020-09-25 11:10:52,314 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 [2020-09-25 11:10:52,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-09-25 11:10:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 513. [2020-09-25 11:10:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 11:10:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 613 transitions. [2020-09-25 11:10:52,336 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 613 transitions. Word has length 182 [2020-09-25 11:10:52,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:52,337 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 613 transitions. [2020-09-25 11:10:52,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 613 transitions. [2020-09-25 11:10:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 11:10:52,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:52,343 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:52,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:10:52,344 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:52,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1516170884, now seen corresponding path program 1 times [2020-09-25 11:10:52,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:52,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102610876] [2020-09-25 11:10:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:53,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:53,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 11:10:53,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:10:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-25 11:10:53,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:53,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 11:10:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:10:53,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:53,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:53,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:53,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:53,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:53,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:53,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:10:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 11:10:53,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102610876] [2020-09-25 11:10:53,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:53,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:53,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119427052] [2020-09-25 11:10:53,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:53,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:53,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:53,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:53,523 INFO L87 Difference]: Start difference. First operand 513 states and 613 transitions. Second operand 3 states. [2020-09-25 11:10:53,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:53,565 INFO L93 Difference]: Finished difference Result 1226 states and 1509 transitions. [2020-09-25 11:10:53,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:53,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-09-25 11:10:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:53,573 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 11:10:53,574 INFO L226 Difference]: Without dead ends: 872 [2020-09-25 11:10:53,577 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 [2020-09-25 11:10:53,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-09-25 11:10:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2020-09-25 11:10:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-09-25 11:10:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1054 transitions. [2020-09-25 11:10:53,621 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1054 transitions. Word has length 185 [2020-09-25 11:10:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:53,622 INFO L479 AbstractCegarLoop]: Abstraction has 870 states and 1054 transitions. [2020-09-25 11:10:53,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1054 transitions. [2020-09-25 11:10:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 11:10:53,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:53,628 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:53,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:10:53,629 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:53,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:53,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1645719778, now seen corresponding path program 1 times [2020-09-25 11:10:53,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:53,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589477741] [2020-09-25 11:10:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:54,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:54,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:55,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:55,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 11:10:55,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:10:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1527 [2020-09-25 11:10:55,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:55,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-09-25 11:10:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:10:55,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:55,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:55,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:55,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:55,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:55,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:55,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:55,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 11:10:55,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589477741] [2020-09-25 11:10:55,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:55,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:55,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773996380] [2020-09-25 11:10:55,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:55,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:55,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:55,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:55,272 INFO L87 Difference]: Start difference. First operand 870 states and 1054 transitions. Second operand 3 states. [2020-09-25 11:10:55,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:55,319 INFO L93 Difference]: Finished difference Result 2271 states and 2812 transitions. [2020-09-25 11:10:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:55,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-25 11:10:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:55,328 INFO L225 Difference]: With dead ends: 2271 [2020-09-25 11:10:55,328 INFO L226 Difference]: Without dead ends: 1577 [2020-09-25 11:10:55,330 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 [2020-09-25 11:10:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2020-09-25 11:10:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1235. [2020-09-25 11:10:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2020-09-25 11:10:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1509 transitions. [2020-09-25 11:10:55,386 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1509 transitions. Word has length 187 [2020-09-25 11:10:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:55,387 INFO L479 AbstractCegarLoop]: Abstraction has 1235 states and 1509 transitions. [2020-09-25 11:10:55,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1509 transitions. [2020-09-25 11:10:55,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 11:10:55,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:55,392 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:55,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:10:55,392 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:55,393 INFO L82 PathProgramCache]: Analyzing trace with hash -293442268, now seen corresponding path program 1 times [2020-09-25 11:10:55,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:55,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684066583] [2020-09-25 11:10:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:55,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:56,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 11:10:56,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:10:56,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-09-25 11:10:56,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:56,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:10:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 11:10:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:10:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:56,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:56,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:56,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:56,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:56,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:56,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:56,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:56,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:56,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684066583] [2020-09-25 11:10:56,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:56,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:10:56,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641998971] [2020-09-25 11:10:56,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:10:56,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:56,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:10:56,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:10:56,379 INFO L87 Difference]: Start difference. First operand 1235 states and 1509 transitions. Second operand 4 states. [2020-09-25 11:10:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:56,507 INFO L93 Difference]: Finished difference Result 4399 states and 5476 transitions. [2020-09-25 11:10:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:10:56,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-09-25 11:10:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:56,522 INFO L225 Difference]: With dead ends: 4399 [2020-09-25 11:10:56,522 INFO L226 Difference]: Without dead ends: 3357 [2020-09-25 11:10:56,528 INFO L675 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 [2020-09-25 11:10:56,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2020-09-25 11:10:56,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 2291. [2020-09-25 11:10:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-09-25 11:10:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2808 transitions. [2020-09-25 11:10:56,642 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2808 transitions. Word has length 187 [2020-09-25 11:10:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:56,643 INFO L479 AbstractCegarLoop]: Abstraction has 2291 states and 2808 transitions. [2020-09-25 11:10:56,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:10:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2808 transitions. [2020-09-25 11:10:56,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 11:10:56,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:56,647 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:56,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:10:56,648 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:56,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:56,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1498778359, now seen corresponding path program 1 times [2020-09-25 11:10:56,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:56,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985668230] [2020-09-25 11:10:56,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:57,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:57,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 11:10:57,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:10:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-25 11:10:57,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:57,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 11:10:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:10:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:57,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:57,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:57,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:57,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:57,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:57,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:57,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:57,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:10:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:57,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985668230] [2020-09-25 11:10:57,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:57,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:57,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731968751] [2020-09-25 11:10:57,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:57,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:57,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:57,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:57,286 INFO L87 Difference]: Start difference. First operand 2291 states and 2808 transitions. Second operand 3 states. [2020-09-25 11:10:57,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:57,611 INFO L93 Difference]: Finished difference Result 4703 states and 5958 transitions. [2020-09-25 11:10:57,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:57,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-25 11:10:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:57,624 INFO L225 Difference]: With dead ends: 4703 [2020-09-25 11:10:57,624 INFO L226 Difference]: Without dead ends: 2625 [2020-09-25 11:10:57,629 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 [2020-09-25 11:10:57,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2020-09-25 11:10:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2533. [2020-09-25 11:10:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2533 states. [2020-09-25 11:10:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 3155 transitions. [2020-09-25 11:10:57,772 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 3155 transitions. Word has length 187 [2020-09-25 11:10:57,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:57,773 INFO L479 AbstractCegarLoop]: Abstraction has 2533 states and 3155 transitions. [2020-09-25 11:10:57,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 3155 transitions. [2020-09-25 11:10:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 11:10:57,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:57,778 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:57,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:10:57,778 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:57,779 INFO L82 PathProgramCache]: Analyzing trace with hash 340252365, now seen corresponding path program 1 times [2020-09-25 11:10:57,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:57,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232790828] [2020-09-25 11:10:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:57,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:57,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:57,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:58,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:58,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:58,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:58,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 11:10:58,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:10:58,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-09-25 11:10:58,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:58,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:10:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 11:10:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:10:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:58,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:58,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:58,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:58,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:58,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:58,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:58,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:58,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232790828] [2020-09-25 11:10:58,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:58,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:10:58,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358145985] [2020-09-25 11:10:58,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:10:58,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:58,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:10:58,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:10:58,786 INFO L87 Difference]: Start difference. First operand 2533 states and 3155 transitions. Second operand 4 states. [2020-09-25 11:10:59,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:59,307 INFO L93 Difference]: Finished difference Result 6345 states and 8010 transitions. [2020-09-25 11:10:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:10:59,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-09-25 11:10:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:59,331 INFO L225 Difference]: With dead ends: 6345 [2020-09-25 11:10:59,332 INFO L226 Difference]: Without dead ends: 4061 [2020-09-25 11:10:59,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:10:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2020-09-25 11:10:59,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 2699. [2020-09-25 11:10:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2699 states. [2020-09-25 11:10:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3337 transitions. [2020-09-25 11:10:59,473 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3337 transitions. Word has length 191 [2020-09-25 11:10:59,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:59,474 INFO L479 AbstractCegarLoop]: Abstraction has 2699 states and 3337 transitions. [2020-09-25 11:10:59,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:10:59,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3337 transitions. [2020-09-25 11:10:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 11:10:59,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:59,478 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:59,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:10:59,479 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:59,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:59,479 INFO L82 PathProgramCache]: Analyzing trace with hash -912264382, now seen corresponding path program 1 times [2020-09-25 11:10:59,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:59,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592386809] [2020-09-25 11:10:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:59,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:59,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 11:10:59,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:59,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 11:10:59,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:59,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:59,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 11:10:59,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:10:59,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:59,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:59,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:59,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:59,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:59,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:59,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592386809] [2020-09-25 11:10:59,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:59,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:59,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171541500] [2020-09-25 11:10:59,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:59,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:59,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:59,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:59,766 INFO L87 Difference]: Start difference. First operand 2699 states and 3337 transitions. Second operand 3 states. [2020-09-25 11:10:59,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:59,880 INFO L93 Difference]: Finished difference Result 5456 states and 6766 transitions. [2020-09-25 11:10:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:59,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-09-25 11:10:59,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:59,894 INFO L225 Difference]: With dead ends: 5456 [2020-09-25 11:10:59,894 INFO L226 Difference]: Without dead ends: 3006 [2020-09-25 11:10:59,902 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 [2020-09-25 11:10:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-09-25 11:11:00,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 3004. [2020-09-25 11:11:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3004 states. [2020-09-25 11:11:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 3677 transitions. [2020-09-25 11:11:00,018 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 3677 transitions. Word has length 200 [2020-09-25 11:11:00,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:00,018 INFO L479 AbstractCegarLoop]: Abstraction has 3004 states and 3677 transitions. [2020-09-25 11:11:00,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:11:00,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 3677 transitions. [2020-09-25 11:11:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 11:11:00,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:00,022 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:00,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 11:11:00,022 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:00,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:00,023 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-09-25 11:11:00,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:00,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470749378] [2020-09-25 11:11:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:11:00,050 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:11:00,050 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:11:00,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 11:11:00,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:11:00 BoogieIcfgContainer [2020-09-25 11:11:00,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:11:00,116 INFO L168 Benchmark]: Toolchain (without parser) took 19621.87 ms. Allocated memory was 139.5 MB in the beginning and 467.1 MB in the end (delta: 327.7 MB). Free memory was 102.0 MB in the beginning and 291.3 MB in the end (delta: -189.3 MB). Peak memory consumption was 138.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:00,117 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 11:11:00,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.57 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 177.7 MB in the end (delta: -76.3 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:00,119 INFO L168 Benchmark]: Boogie Preprocessor took 68.67 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 MB in the beginning and 175.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:00,120 INFO L168 Benchmark]: RCFGBuilder took 1043.12 ms. Allocated memory is still 202.4 MB. Free memory was 174.6 MB in the beginning and 103.5 MB in the end (delta: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:00,123 INFO L168 Benchmark]: TraceAbstraction took 17881.42 ms. Allocated memory was 202.4 MB in the beginning and 467.1 MB in the end (delta: 264.8 MB). Free memory was 102.8 MB in the beginning and 291.3 MB in the end (delta: -188.5 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:00,129 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.57 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 177.7 MB in the end (delta: -76.3 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.67 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 MB in the beginning and 175.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1043.12 ms. Allocated memory is still 202.4 MB. Free memory was 174.6 MB in the beginning and 103.5 MB in the end (delta: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17881.42 ms. Allocated memory was 202.4 MB in the beginning and 467.1 MB in the end (delta: 264.8 MB). Free memory was 102.8 MB in the beginning and 291.3 MB in the end (delta: -188.5 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 640]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L645] int s ; [L646] int tmp ; [L650] s = 8464 [L651] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__s3__tmp__reuse_message = 0 [L73] s__state = initial_state [L74] blastFlag = 0 [L75] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND FALSE !(s__info_callback != 0) [L84] COND FALSE !(s__ctx__info_callback != 0) [L88] s__in_handshake ++ [L89] COND TRUE tmp___1 + 12288 [L90] COND TRUE tmp___2 + 16384 [L94] COND FALSE !(s__cert == 0) [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND TRUE s__state == 8464 [L271] s__shutdown = 0 [L272] ret = __VERIFIER_nondet_int() [L273] COND TRUE blastFlag == 0 [L274] blastFlag = 1 [L276] COND FALSE !(ret <= 0) [L279] got_new_session = 1 [L280] s__state = 8496 [L281] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND FALSE !(state == 8496) [L614] COND FALSE !(\read(s__debug)) [L620] COND FALSE !(cb != 0) [L629] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND TRUE s__state == 8496 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 1 [L287] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 8512 [L297] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND TRUE state == 8496 [L640] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 426 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.7s, OverallIterations: 13, TraceHistogramMax: 2, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6499 SDtfs, 5888 SDslu, 7497 SDs, 0 SdLazy, 965 SolverSat, 132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3004occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 2930 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 2372 NumberOfCodeBlocks, 2372 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2159 ConstructedInterpolants, 0 QuantifiedInterpolants, 711945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 120/120 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...