/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_8.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:44:59,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:44:59,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:44:59,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:44:59,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:44:59,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:44:59,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:44:59,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:44:59,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:44:59,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:44:59,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:44:59,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:44:59,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:44:59,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:44:59,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:44:59,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:44:59,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:44:59,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:44:59,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:44:59,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:44:59,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:44:59,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:44:59,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:44:59,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:44:59,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:44:59,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:44:59,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:44:59,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:44:59,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:44:59,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:44:59,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:44:59,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:44:59,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:44:59,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:44:59,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:44:59,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:44:59,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:44:59,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:44:59,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:44:59,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:44:59,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:44:59,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:44:59,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:44:59,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:44:59,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:44:59,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:44:59,629 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:44:59,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:44:59,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:44:59,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:44:59,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:44:59,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:44:59,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:44:59,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:44:59,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:44:59,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:44:59,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:44:59,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:44:59,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:44:59,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:44:59,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:44:59,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:44:59,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:44:59,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:44:59,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:44:59,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:44:59,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:44:59,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:44:59,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:44:59,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:44:59,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:44:59,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:44:59,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:44:59,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:44:59,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:44:59,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:44:59,975 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:44:59,975 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_8.cil.c [2020-10-15 04:45:00,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f03cd7b62/dd777991ddfe477db495af1f6053a784/FLAG82ff63731 [2020-10-15 04:45:00,514 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:45:00,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_8.cil.c [2020-10-15 04:45:00,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f03cd7b62/dd777991ddfe477db495af1f6053a784/FLAG82ff63731 [2020-10-15 04:45:00,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f03cd7b62/dd777991ddfe477db495af1f6053a784 [2020-10-15 04:45:00,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:45:00,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:45:00,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:45:00,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:45:00,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:45:00,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:45:00" (1/1) ... [2020-10-15 04:45:00,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742dacf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:00, skipping insertion in model container [2020-10-15 04:45:00,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:45:00" (1/1) ... [2020-10-15 04:45:00,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:45:00,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:45:01,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:45:01,368 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:45:01,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:45:01,445 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:45:01,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:01 WrapperNode [2020-10-15 04:45:01,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:45:01,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:45:01,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:45:01,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:45:01,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:01" (1/1) ... [2020-10-15 04:45:01,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:01" (1/1) ... [2020-10-15 04:45:01,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:01" (1/1) ... [2020-10-15 04:45:01,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:01" (1/1) ... [2020-10-15 04:45:01,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:01" (1/1) ... [2020-10-15 04:45:01,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:01" (1/1) ... [2020-10-15 04:45:01,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:01" (1/1) ... [2020-10-15 04:45:01,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:45:01,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:45:01,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:45:01,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:45:01,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:45:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:45:01,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:45:01,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:45:01,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:45:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:45:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:45:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:45:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:45:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:45:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:45:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:45:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:45:01,786 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:45:02,302 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-15 04:45:02,302 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-15 04:45:02,313 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:45:02,314 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:45:02,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:45:02 BoogieIcfgContainer [2020-10-15 04:45:02,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:45:02,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:45:02,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:45:02,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:45:02,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:45:00" (1/3) ... [2020-10-15 04:45:02,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc1019c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:45:02, skipping insertion in model container [2020-10-15 04:45:02,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:01" (2/3) ... [2020-10-15 04:45:02,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc1019c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:45:02, skipping insertion in model container [2020-10-15 04:45:02,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:45:02" (3/3) ... [2020-10-15 04:45:02,329 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_8.cil.c [2020-10-15 04:45:02,340 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:45:02,348 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:45:02,362 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:45:02,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:45:02,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:45:02,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:45:02,389 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:45:02,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:45:02,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:45:02,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:45:02,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:45:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-10-15 04:45:02,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 04:45:02,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:02,423 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] [2020-10-15 04:45:02,423 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:02,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash -617772913, now seen corresponding path program 1 times [2020-10-15 04:45:02,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:02,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436510700] [2020-10-15 04:45:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:03,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 04:45:03,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:45:03,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-15 04:45:03,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:03,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:03,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:03,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 04:45:03,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:45:03,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:45:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:03,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:03,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:03,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:03,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:03,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:03,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436510700] [2020-10-15 04:45:03,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:03,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:03,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123171557] [2020-10-15 04:45:03,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:03,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:03,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:03,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:03,266 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-10-15 04:45:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:03,414 INFO L93 Difference]: Finished difference Result 432 states and 738 transitions. [2020-10-15 04:45:03,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:03,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-10-15 04:45:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:03,431 INFO L225 Difference]: With dead ends: 432 [2020-10-15 04:45:03,432 INFO L226 Difference]: Without dead ends: 263 [2020-10-15 04:45:03,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-15 04:45:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2020-10-15 04:45:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-15 04:45:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 398 transitions. [2020-10-15 04:45:03,502 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 398 transitions. Word has length 47 [2020-10-15 04:45:03,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:03,502 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 398 transitions. [2020-10-15 04:45:03,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 398 transitions. [2020-10-15 04:45:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:45:03,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:03,507 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] [2020-10-15 04:45:03,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:45:03,508 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:03,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1925191086, now seen corresponding path program 1 times [2020-10-15 04:45:03,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:03,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097793831] [2020-10-15 04:45:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:03,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 04:45:03,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:45:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-15 04:45:03,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:03,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:03,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:03,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:45:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:45:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:45:03,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:03,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:03,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:03,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:03,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:03,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:03,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:03,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:03,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097793831] [2020-10-15 04:45:03,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:03,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:03,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100692398] [2020-10-15 04:45:03,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:03,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:03,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:03,927 INFO L87 Difference]: Start difference. First operand 263 states and 398 transitions. Second operand 3 states. [2020-10-15 04:45:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:04,022 INFO L93 Difference]: Finished difference Result 513 states and 789 transitions. [2020-10-15 04:45:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:04,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-10-15 04:45:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:04,026 INFO L225 Difference]: With dead ends: 513 [2020-10-15 04:45:04,026 INFO L226 Difference]: Without dead ends: 387 [2020-10-15 04:45:04,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-15 04:45:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2020-10-15 04:45:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-15 04:45:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 584 transitions. [2020-10-15 04:45:04,072 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 584 transitions. Word has length 63 [2020-10-15 04:45:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:04,073 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 584 transitions. [2020-10-15 04:45:04,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 584 transitions. [2020-10-15 04:45:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 04:45:04,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:04,084 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:04,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:45:04,085 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:04,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:04,085 INFO L82 PathProgramCache]: Analyzing trace with hash -79560674, now seen corresponding path program 1 times [2020-10-15 04:45:04,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:04,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409332432] [2020-10-15 04:45:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:04,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 04:45:04,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:45:04,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-15 04:45:04,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:04,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:45:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:45:04,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:04,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:04,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:04,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:04,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:04,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:45:04,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409332432] [2020-10-15 04:45:04,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:04,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:04,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121865812] [2020-10-15 04:45:04,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:04,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:04,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:04,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:04,333 INFO L87 Difference]: Start difference. First operand 387 states and 584 transitions. Second operand 3 states. [2020-10-15 04:45:04,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:04,621 INFO L93 Difference]: Finished difference Result 926 states and 1439 transitions. [2020-10-15 04:45:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:04,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-10-15 04:45:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:04,625 INFO L225 Difference]: With dead ends: 926 [2020-10-15 04:45:04,625 INFO L226 Difference]: Without dead ends: 552 [2020-10-15 04:45:04,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:04,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-10-15 04:45:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 510. [2020-10-15 04:45:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-15 04:45:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 731 transitions. [2020-10-15 04:45:04,651 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 731 transitions. Word has length 84 [2020-10-15 04:45:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:04,652 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 731 transitions. [2020-10-15 04:45:04,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 731 transitions. [2020-10-15 04:45:04,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 04:45:04,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:04,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:04,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:45:04,656 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:04,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1451367972, now seen corresponding path program 1 times [2020-10-15 04:45:04,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:04,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750328580] [2020-10-15 04:45:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:04,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 04:45:04,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:45:04,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-15 04:45:04,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:04,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:45:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:45:04,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:04,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:04,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:04,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:04,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:04,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:45:04,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750328580] [2020-10-15 04:45:04,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:04,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:04,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429886508] [2020-10-15 04:45:04,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:04,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:04,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:04,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:04,867 INFO L87 Difference]: Start difference. First operand 510 states and 731 transitions. Second operand 3 states. [2020-10-15 04:45:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:05,091 INFO L93 Difference]: Finished difference Result 1178 states and 1742 transitions. [2020-10-15 04:45:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:05,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-10-15 04:45:05,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:05,097 INFO L225 Difference]: With dead ends: 1178 [2020-10-15 04:45:05,097 INFO L226 Difference]: Without dead ends: 645 [2020-10-15 04:45:05,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:05,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-10-15 04:45:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 630. [2020-10-15 04:45:05,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-15 04:45:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 905 transitions. [2020-10-15 04:45:05,151 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 905 transitions. Word has length 84 [2020-10-15 04:45:05,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:05,151 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 905 transitions. [2020-10-15 04:45:05,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 905 transitions. [2020-10-15 04:45:05,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 04:45:05,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:05,159 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:05,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:45:05,159 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:05,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:05,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1350569628, now seen corresponding path program 1 times [2020-10-15 04:45:05,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:05,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114143537] [2020-10-15 04:45:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:05,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 04:45:05,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:45:05,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-15 04:45:05,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:05,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:45:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:45:05,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:05,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:05,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:05,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-15 04:45:05,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114143537] [2020-10-15 04:45:05,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:05,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:05,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407438153] [2020-10-15 04:45:05,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:05,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:05,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:05,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:05,529 INFO L87 Difference]: Start difference. First operand 630 states and 905 transitions. Second operand 3 states. [2020-10-15 04:45:05,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:05,606 INFO L93 Difference]: Finished difference Result 1247 states and 1803 transitions. [2020-10-15 04:45:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:05,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-10-15 04:45:05,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:05,611 INFO L225 Difference]: With dead ends: 1247 [2020-10-15 04:45:05,612 INFO L226 Difference]: Without dead ends: 835 [2020-10-15 04:45:05,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:05,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-10-15 04:45:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 835. [2020-10-15 04:45:05,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-15 04:45:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1199 transitions. [2020-10-15 04:45:05,644 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1199 transitions. Word has length 105 [2020-10-15 04:45:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:05,645 INFO L479 AbstractCegarLoop]: Abstraction has 835 states and 1199 transitions. [2020-10-15 04:45:05,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1199 transitions. [2020-10-15 04:45:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-15 04:45:05,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:05,656 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:05,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:45:05,656 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:05,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:05,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1762028106, now seen corresponding path program 1 times [2020-10-15 04:45:05,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:05,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543359705] [2020-10-15 04:45:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:06,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:06,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:06,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:07,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-15 04:45:07,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:45:07,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1508 [2020-10-15 04:45:07,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:07,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-15 04:45:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 04:45:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:45:07,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:07,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:07,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:07,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:07,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:07,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:45:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-15 04:45:07,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543359705] [2020-10-15 04:45:07,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:07,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:07,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896173412] [2020-10-15 04:45:07,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:07,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:07,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:07,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:07,325 INFO L87 Difference]: Start difference. First operand 835 states and 1199 transitions. Second operand 3 states. [2020-10-15 04:45:07,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:07,398 INFO L93 Difference]: Finished difference Result 1657 states and 2391 transitions. [2020-10-15 04:45:07,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:07,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2020-10-15 04:45:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:07,404 INFO L225 Difference]: With dead ends: 1657 [2020-10-15 04:45:07,404 INFO L226 Difference]: Without dead ends: 1040 [2020-10-15 04:45:07,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:07,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-10-15 04:45:07,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1040. [2020-10-15 04:45:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-10-15 04:45:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1494 transitions. [2020-10-15 04:45:07,435 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1494 transitions. Word has length 158 [2020-10-15 04:45:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:07,435 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1494 transitions. [2020-10-15 04:45:07,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1494 transitions. [2020-10-15 04:45:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:45:07,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:07,440 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:07,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:45:07,440 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:07,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:07,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1307893982, now seen corresponding path program 1 times [2020-10-15 04:45:07,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:07,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498736418] [2020-10-15 04:45:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:07,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:08,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:45:08,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:45:08,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-15 04:45:08,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:08,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-15 04:45:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:45:08,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:08,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:08,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:08,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:08,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:08,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:08,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-15 04:45:08,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498736418] [2020-10-15 04:45:08,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:08,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:08,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748895968] [2020-10-15 04:45:08,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:08,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:08,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:08,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:08,144 INFO L87 Difference]: Start difference. First operand 1040 states and 1494 transitions. Second operand 3 states. [2020-10-15 04:45:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:08,230 INFO L93 Difference]: Finished difference Result 2061 states and 2972 transitions. [2020-10-15 04:45:08,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:08,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-10-15 04:45:08,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:08,238 INFO L225 Difference]: With dead ends: 2061 [2020-10-15 04:45:08,238 INFO L226 Difference]: Without dead ends: 1239 [2020-10-15 04:45:08,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:08,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-10-15 04:45:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1239. [2020-10-15 04:45:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-10-15 04:45:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1778 transitions. [2020-10-15 04:45:08,280 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1778 transitions. Word has length 187 [2020-10-15 04:45:08,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:08,280 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1778 transitions. [2020-10-15 04:45:08,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1778 transitions. [2020-10-15 04:45:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-15 04:45:08,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:08,287 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:08,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:45:08,287 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:08,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1817548474, now seen corresponding path program 1 times [2020-10-15 04:45:08,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:08,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746693997] [2020-10-15 04:45:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:08,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:09,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-15 04:45:09,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:45:09,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-10-15 04:45:09,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:09,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-15 04:45:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:45:09,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:09,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:09,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:09,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:09,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-15 04:45:09,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746693997] [2020-10-15 04:45:09,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:09,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:09,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386587032] [2020-10-15 04:45:09,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:09,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:09,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:09,639 INFO L87 Difference]: Start difference. First operand 1239 states and 1778 transitions. Second operand 3 states. [2020-10-15 04:45:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:09,726 INFO L93 Difference]: Finished difference Result 2465 states and 3549 transitions. [2020-10-15 04:45:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:09,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2020-10-15 04:45:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:09,735 INFO L225 Difference]: With dead ends: 2465 [2020-10-15 04:45:09,735 INFO L226 Difference]: Without dead ends: 1444 [2020-10-15 04:45:09,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-10-15 04:45:09,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1444. [2020-10-15 04:45:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-10-15 04:45:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2075 transitions. [2020-10-15 04:45:09,783 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2075 transitions. Word has length 246 [2020-10-15 04:45:09,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:09,783 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 2075 transitions. [2020-10-15 04:45:09,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:09,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2075 transitions. [2020-10-15 04:45:09,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-15 04:45:09,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:09,791 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2020-10-15 04:45:09,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:45:09,791 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:09,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:09,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1660517451, now seen corresponding path program 1 times [2020-10-15 04:45:09,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:09,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531711466] [2020-10-15 04:45:09,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:13,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:14,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:14,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-15 04:45:14,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:45:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:45:14,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:14,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:45:14,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-15 04:45:14,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:14,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:14,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:14,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:14,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:14,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:14,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:14,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:14,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:14,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:14,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-15 04:45:15,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531711466] [2020-10-15 04:45:15,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:15,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:15,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818054930] [2020-10-15 04:45:15,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:15,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:15,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:15,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:15,021 INFO L87 Difference]: Start difference. First operand 1444 states and 2075 transitions. Second operand 3 states. [2020-10-15 04:45:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:15,103 INFO L93 Difference]: Finished difference Result 4280 states and 6165 transitions. [2020-10-15 04:45:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:15,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2020-10-15 04:45:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:15,119 INFO L225 Difference]: With dead ends: 4280 [2020-10-15 04:45:15,119 INFO L226 Difference]: Without dead ends: 2849 [2020-10-15 04:45:15,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:15,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2020-10-15 04:45:15,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 2847. [2020-10-15 04:45:15,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2847 states. [2020-10-15 04:45:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 4086 transitions. [2020-10-15 04:45:15,221 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 4086 transitions. Word has length 300 [2020-10-15 04:45:15,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:15,221 INFO L479 AbstractCegarLoop]: Abstraction has 2847 states and 4086 transitions. [2020-10-15 04:45:15,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 4086 transitions. [2020-10-15 04:45:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-15 04:45:15,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:15,233 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:15,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:45:15,234 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:15,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:15,234 INFO L82 PathProgramCache]: Analyzing trace with hash -534452379, now seen corresponding path program 1 times [2020-10-15 04:45:15,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:15,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850298910] [2020-10-15 04:45:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:15,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:17,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:17,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:20,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-15 04:45:20,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:45:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:45:20,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:20,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 254 [2020-10-15 04:45:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 04:45:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:20,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:20,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:20,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:20,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2020-10-15 04:45:20,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850298910] [2020-10-15 04:45:20,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:20,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:20,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955421671] [2020-10-15 04:45:20,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:20,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:20,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:20,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:20,406 INFO L87 Difference]: Start difference. First operand 2847 states and 4086 transitions. Second operand 3 states. [2020-10-15 04:45:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:20,531 INFO L93 Difference]: Finished difference Result 5681 states and 8175 transitions. [2020-10-15 04:45:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:20,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 321 [2020-10-15 04:45:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:20,549 INFO L225 Difference]: With dead ends: 5681 [2020-10-15 04:45:20,549 INFO L226 Difference]: Without dead ends: 3253 [2020-10-15 04:45:20,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:20,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2020-10-15 04:45:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 3253. [2020-10-15 04:45:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3253 states. [2020-10-15 04:45:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 4675 transitions. [2020-10-15 04:45:20,669 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 4675 transitions. Word has length 321 [2020-10-15 04:45:20,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:20,670 INFO L479 AbstractCegarLoop]: Abstraction has 3253 states and 4675 transitions. [2020-10-15 04:45:20,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:20,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 4675 transitions. [2020-10-15 04:45:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-15 04:45:20,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:20,683 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-15 04:45:20,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:45:20,684 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:20,684 INFO L82 PathProgramCache]: Analyzing trace with hash -828567778, now seen corresponding path program 1 times [2020-10-15 04:45:20,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:20,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966285052] [2020-10-15 04:45:20,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:22,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:22,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:23,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:23,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-15 04:45:23,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:45:23,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3106 [2020-10-15 04:45:23,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:23,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-15 04:45:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:45:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:23,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:23,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:23,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:23,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:23,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:23,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-10-15 04:45:23,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966285052] [2020-10-15 04:45:23,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:23,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:23,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554983610] [2020-10-15 04:45:23,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:23,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:23,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:23,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:23,993 INFO L87 Difference]: Start difference. First operand 3253 states and 4675 transitions. Second operand 3 states. [2020-10-15 04:45:24,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:24,164 INFO L93 Difference]: Finished difference Result 6493 states and 9353 transitions. [2020-10-15 04:45:24,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:24,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 351 [2020-10-15 04:45:24,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:24,191 INFO L225 Difference]: With dead ends: 6493 [2020-10-15 04:45:24,191 INFO L226 Difference]: Without dead ends: 3659 [2020-10-15 04:45:24,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:24,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2020-10-15 04:45:24,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3659. [2020-10-15 04:45:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3659 states. [2020-10-15 04:45:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5266 transitions. [2020-10-15 04:45:24,338 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5266 transitions. Word has length 351 [2020-10-15 04:45:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:24,339 INFO L479 AbstractCegarLoop]: Abstraction has 3659 states and 5266 transitions. [2020-10-15 04:45:24,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5266 transitions. [2020-10-15 04:45:24,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-15 04:45:24,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:24,353 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:24,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:45:24,354 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:24,354 INFO L82 PathProgramCache]: Analyzing trace with hash 637367986, now seen corresponding path program 1 times [2020-10-15 04:45:24,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:24,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42715479] [2020-10-15 04:45:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:24,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:24,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:24,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:29,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-15 04:45:29,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:45:29,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:45:29,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:29,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:29,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:29,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 356 [2020-10-15 04:45:29,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:45:29,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:29,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:29,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:29,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:29,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:29,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:29,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 1163 trivial. 0 not checked. [2020-10-15 04:45:29,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42715479] [2020-10-15 04:45:29,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:29,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:29,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953796944] [2020-10-15 04:45:29,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:29,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:29,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:29,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:29,562 INFO L87 Difference]: Start difference. First operand 3659 states and 5266 transitions. Second operand 3 states. [2020-10-15 04:45:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:29,695 INFO L93 Difference]: Finished difference Result 7305 states and 10535 transitions. [2020-10-15 04:45:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:29,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 411 [2020-10-15 04:45:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:29,715 INFO L225 Difference]: With dead ends: 7305 [2020-10-15 04:45:29,716 INFO L226 Difference]: Without dead ends: 4065 [2020-10-15 04:45:29,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:29,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2020-10-15 04:45:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 4065. [2020-10-15 04:45:29,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4065 states. [2020-10-15 04:45:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 5859 transitions. [2020-10-15 04:45:29,836 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 5859 transitions. Word has length 411 [2020-10-15 04:45:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:29,837 INFO L479 AbstractCegarLoop]: Abstraction has 4065 states and 5859 transitions. [2020-10-15 04:45:29,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 5859 transitions. [2020-10-15 04:45:29,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-15 04:45:29,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:29,854 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:29,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:45:29,855 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1732385011, now seen corresponding path program 1 times [2020-10-15 04:45:29,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:29,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487028910] [2020-10-15 04:45:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:31,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:32,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:34,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-15 04:45:34,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:45:34,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:45:34,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:34,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 320 [2020-10-15 04:45:34,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:45:34,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:34,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:34,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:34,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:34,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:34,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:34,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:34,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2082 backedges. 1081 proven. 0 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2020-10-15 04:45:35,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487028910] [2020-10-15 04:45:35,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:35,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:35,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770169622] [2020-10-15 04:45:35,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:35,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:35,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:35,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:35,044 INFO L87 Difference]: Start difference. First operand 4065 states and 5859 transitions. Second operand 3 states. [2020-10-15 04:45:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:35,299 INFO L93 Difference]: Finished difference Result 9257 states and 13761 transitions. [2020-10-15 04:45:35,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:35,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 466 [2020-10-15 04:45:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:35,344 INFO L225 Difference]: With dead ends: 9257 [2020-10-15 04:45:35,345 INFO L226 Difference]: Without dead ends: 4965 [2020-10-15 04:45:35,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4965 states. [2020-10-15 04:45:35,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4965 to 4565. [2020-10-15 04:45:35,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4565 states. [2020-10-15 04:45:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 6719 transitions. [2020-10-15 04:45:35,480 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 6719 transitions. Word has length 466 [2020-10-15 04:45:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:35,480 INFO L479 AbstractCegarLoop]: Abstraction has 4565 states and 6719 transitions. [2020-10-15 04:45:35,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 6719 transitions. [2020-10-15 04:45:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-15 04:45:35,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:35,503 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:35,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:45:35,503 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:35,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:35,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1022727517, now seen corresponding path program 1 times [2020-10-15 04:45:35,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:35,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951542549] [2020-10-15 04:45:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:35,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:35,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:35,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:36,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:36,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:36,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:40,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:40,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-15 04:45:40,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:45:40,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:45:40,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:40,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:45:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 312 [2020-10-15 04:45:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-15 04:45:40,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:40,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:40,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:40,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:40,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:40,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:40,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:40,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:40,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:40,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:40,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:40,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1231 proven. 123 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2020-10-15 04:45:40,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951542549] [2020-10-15 04:45:40,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:40,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 04:45:40,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021909801] [2020-10-15 04:45:40,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:40,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:40,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:40,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:40,758 INFO L87 Difference]: Start difference. First operand 4565 states and 6719 transitions. Second operand 4 states. [2020-10-15 04:45:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:41,225 INFO L93 Difference]: Finished difference Result 15749 states and 23603 transitions. [2020-10-15 04:45:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:41,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 494 [2020-10-15 04:45:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:41,238 INFO L225 Difference]: With dead ends: 15749 [2020-10-15 04:45:41,238 INFO L226 Difference]: Without dead ends: 5291 [2020-10-15 04:45:41,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2020-10-15 04:45:41,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 5113. [2020-10-15 04:45:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5113 states. [2020-10-15 04:45:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 7506 transitions. [2020-10-15 04:45:41,364 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 7506 transitions. Word has length 494 [2020-10-15 04:45:41,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:41,365 INFO L479 AbstractCegarLoop]: Abstraction has 5113 states and 7506 transitions. [2020-10-15 04:45:41,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:45:41,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 7506 transitions. [2020-10-15 04:45:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-15 04:45:41,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:41,386 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:41,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:45:41,387 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:41,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:41,387 INFO L82 PathProgramCache]: Analyzing trace with hash -494961143, now seen corresponding path program 1 times [2020-10-15 04:45:41,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:41,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054442206] [2020-10-15 04:45:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:41,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:46,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:46,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 526 [2020-10-15 04:45:46,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:45:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:45:46,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:46,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:45:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-15 04:45:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:45:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:46,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:46,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:46,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:46,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:46,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:46,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 1675 proven. 26 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2020-10-15 04:45:46,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054442206] [2020-10-15 04:45:46,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:46,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 04:45:46,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899200679] [2020-10-15 04:45:46,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:46,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:46,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:46,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:46,617 INFO L87 Difference]: Start difference. First operand 5113 states and 7506 transitions. Second operand 4 states. [2020-10-15 04:45:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:47,045 INFO L93 Difference]: Finished difference Result 14482 states and 21465 transitions. [2020-10-15 04:45:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:47,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 518 [2020-10-15 04:45:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:47,063 INFO L225 Difference]: With dead ends: 14482 [2020-10-15 04:45:47,064 INFO L226 Difference]: Without dead ends: 9202 [2020-10-15 04:45:47,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9202 states. [2020-10-15 04:45:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9202 to 8428. [2020-10-15 04:45:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8428 states. [2020-10-15 04:45:47,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 12447 transitions. [2020-10-15 04:45:47,245 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 12447 transitions. Word has length 518 [2020-10-15 04:45:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:47,245 INFO L479 AbstractCegarLoop]: Abstraction has 8428 states and 12447 transitions. [2020-10-15 04:45:47,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:45:47,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 12447 transitions. [2020-10-15 04:45:47,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2020-10-15 04:45:47,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:47,269 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 16, 16, 16, 15, 15, 13, 13, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:47,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:45:47,269 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1779653870, now seen corresponding path program 1 times [2020-10-15 04:45:47,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:47,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200117141] [2020-10-15 04:45:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:50,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:52,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:52,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 603 [2020-10-15 04:45:52,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 04:45:52,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:45:52,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:52,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:45:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 484 [2020-10-15 04:45:52,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:52,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:52,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:52,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:52,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:52,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:52,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:52,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3593 backedges. 1196 proven. 0 refuted. 0 times theorem prover too weak. 2397 trivial. 0 not checked. [2020-10-15 04:45:52,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200117141] [2020-10-15 04:45:52,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:52,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:52,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140405547] [2020-10-15 04:45:52,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:52,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:52,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:52,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:52,820 INFO L87 Difference]: Start difference. First operand 8428 states and 12447 transitions. Second operand 3 states. [2020-10-15 04:45:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:52,936 INFO L93 Difference]: Finished difference Result 9394 states and 13856 transitions. [2020-10-15 04:45:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:52,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 595 [2020-10-15 04:45:52,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:52,957 INFO L225 Difference]: With dead ends: 9394 [2020-10-15 04:45:52,957 INFO L226 Difference]: Without dead ends: 8024 [2020-10-15 04:45:52,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:52,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2020-10-15 04:45:53,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7060. [2020-10-15 04:45:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7060 states. [2020-10-15 04:45:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 10424 transitions. [2020-10-15 04:45:53,106 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 10424 transitions. Word has length 595 [2020-10-15 04:45:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:53,107 INFO L479 AbstractCegarLoop]: Abstraction has 7060 states and 10424 transitions. [2020-10-15 04:45:53,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 10424 transitions. [2020-10-15 04:45:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2020-10-15 04:45:53,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:53,126 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 16, 16, 16, 15, 15, 12, 12, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:53,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:45:53,127 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:53,128 INFO L82 PathProgramCache]: Analyzing trace with hash 873946896, now seen corresponding path program 1 times [2020-10-15 04:45:53,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:53,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047818373] [2020-10-15 04:45:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:53,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:58,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:58,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 607 [2020-10-15 04:45:58,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:45:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 04:45:58,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:58,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-10-15 04:45:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:45:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:58,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:58,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:58,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:58,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:58,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:58,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:58,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:58,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3742 backedges. 2129 proven. 0 refuted. 0 times theorem prover too weak. 1613 trivial. 0 not checked. [2020-10-15 04:45:58,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047818373] [2020-10-15 04:45:58,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:58,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:58,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873688108] [2020-10-15 04:45:58,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:58,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:58,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:58,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:58,353 INFO L87 Difference]: Start difference. First operand 7060 states and 10424 transitions. Second operand 3 states. [2020-10-15 04:45:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:58,630 INFO L93 Difference]: Finished difference Result 15897 states and 23971 transitions. [2020-10-15 04:45:58,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:58,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 599 [2020-10-15 04:45:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:58,647 INFO L225 Difference]: With dead ends: 15897 [2020-10-15 04:45:58,648 INFO L226 Difference]: Without dead ends: 8490 [2020-10-15 04:45:58,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:58,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2020-10-15 04:45:58,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 7870. [2020-10-15 04:45:58,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7870 states. [2020-10-15 04:45:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7870 states to 7870 states and 11794 transitions. [2020-10-15 04:45:58,831 INFO L78 Accepts]: Start accepts. Automaton has 7870 states and 11794 transitions. Word has length 599 [2020-10-15 04:45:58,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:58,831 INFO L479 AbstractCegarLoop]: Abstraction has 7870 states and 11794 transitions. [2020-10-15 04:45:58,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 7870 states and 11794 transitions. [2020-10-15 04:45:58,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2020-10-15 04:45:58,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:58,857 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 17, 17, 15, 15, 13, 13, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:58,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:45:58,858 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:58,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:58,858 INFO L82 PathProgramCache]: Analyzing trace with hash 514383255, now seen corresponding path program 1 times [2020-10-15 04:45:58,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:58,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829550578] [2020-10-15 04:45:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:59,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:59,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:59,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:00,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:03,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:03,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 651 [2020-10-15 04:46:03,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:46:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 04:46:03,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:03,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:03,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:46:03,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-15 04:46:03,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-15 04:46:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:04,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:04,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:04,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:04,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:04,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:46:04,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:04,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:04,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4384 backedges. 3020 proven. 1 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2020-10-15 04:46:04,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829550578] [2020-10-15 04:46:04,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:04,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:46:04,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170689446] [2020-10-15 04:46:04,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:46:04,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:04,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:46:04,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:04,965 INFO L87 Difference]: Start difference. First operand 7870 states and 11794 transitions. Second operand 5 states. [2020-10-15 04:46:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:05,569 INFO L93 Difference]: Finished difference Result 42472 states and 63454 transitions. [2020-10-15 04:46:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:46:05,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 643 [2020-10-15 04:46:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:05,643 INFO L225 Difference]: With dead ends: 42472 [2020-10-15 04:46:05,643 INFO L226 Difference]: Without dead ends: 34615 [2020-10-15 04:46:05,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:46:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34615 states. [2020-10-15 04:46:06,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34615 to 15695. [2020-10-15 04:46:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15695 states. [2020-10-15 04:46:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15695 states to 15695 states and 23480 transitions. [2020-10-15 04:46:06,235 INFO L78 Accepts]: Start accepts. Automaton has 15695 states and 23480 transitions. Word has length 643 [2020-10-15 04:46:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:06,236 INFO L479 AbstractCegarLoop]: Abstraction has 15695 states and 23480 transitions. [2020-10-15 04:46:06,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:46:06,236 INFO L276 IsEmpty]: Start isEmpty. Operand 15695 states and 23480 transitions. [2020-10-15 04:46:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2020-10-15 04:46:06,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:06,272 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 17, 17, 15, 15, 13, 13, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:06,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:46:06,272 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:06,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:06,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1734737159, now seen corresponding path program 1 times [2020-10-15 04:46:06,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:06,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897748945] [2020-10-15 04:46:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:06,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:06,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:06,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:06,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:06,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:07,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:07,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:09,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:11,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 652 [2020-10-15 04:46:11,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:46:11,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-15 04:46:11,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:11,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-15 04:46:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-15 04:46:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:11,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:11,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:11,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:11,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:11,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:11,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:11,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:11,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4384 backedges. 3057 proven. 0 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2020-10-15 04:46:11,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897748945] [2020-10-15 04:46:11,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:11,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:11,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967970769] [2020-10-15 04:46:11,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:11,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:11,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:11,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:11,666 INFO L87 Difference]: Start difference. First operand 15695 states and 23480 transitions. Second operand 3 states. [2020-10-15 04:46:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:12,127 INFO L93 Difference]: Finished difference Result 46719 states and 69856 transitions. [2020-10-15 04:46:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:12,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 644 [2020-10-15 04:46:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:12,196 INFO L225 Difference]: With dead ends: 46719 [2020-10-15 04:46:12,197 INFO L226 Difference]: Without dead ends: 31037 [2020-10-15 04:46:12,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31037 states. [2020-10-15 04:46:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31037 to 31035. [2020-10-15 04:46:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31035 states. [2020-10-15 04:46:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31035 states to 31035 states and 46332 transitions. [2020-10-15 04:46:13,032 INFO L78 Accepts]: Start accepts. Automaton has 31035 states and 46332 transitions. Word has length 644 [2020-10-15 04:46:13,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:13,038 INFO L479 AbstractCegarLoop]: Abstraction has 31035 states and 46332 transitions. [2020-10-15 04:46:13,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:13,039 INFO L276 IsEmpty]: Start isEmpty. Operand 31035 states and 46332 transitions. [2020-10-15 04:46:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2020-10-15 04:46:13,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:13,078 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 17, 17, 15, 15, 13, 13, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:13,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:46:13,078 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:13,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2132375095, now seen corresponding path program 1 times [2020-10-15 04:46:13,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:13,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283404606] [2020-10-15 04:46:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:18,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 654 [2020-10-15 04:46:18,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:46:18,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:46:18,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:18,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-15 04:46:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-15 04:46:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:18,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:18,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:18,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:18,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:18,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:18,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:18,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4385 backedges. 3058 proven. 0 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2020-10-15 04:46:18,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283404606] [2020-10-15 04:46:18,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:18,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:18,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380342234] [2020-10-15 04:46:18,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:18,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:18,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:18,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:18,357 INFO L87 Difference]: Start difference. First operand 31035 states and 46332 transitions. Second operand 3 states. [2020-10-15 04:46:19,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:19,160 INFO L93 Difference]: Finished difference Result 93019 states and 138842 transitions. [2020-10-15 04:46:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:19,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 646 [2020-10-15 04:46:19,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:19,280 INFO L225 Difference]: With dead ends: 93019 [2020-10-15 04:46:19,280 INFO L226 Difference]: Without dead ends: 61997 [2020-10-15 04:46:19,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61997 states. [2020-10-15 04:46:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61997 to 46655. [2020-10-15 04:46:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46655 states. [2020-10-15 04:46:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46655 states to 46655 states and 69614 transitions. [2020-10-15 04:46:20,311 INFO L78 Accepts]: Start accepts. Automaton has 46655 states and 69614 transitions. Word has length 646 [2020-10-15 04:46:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:20,311 INFO L479 AbstractCegarLoop]: Abstraction has 46655 states and 69614 transitions. [2020-10-15 04:46:20,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:20,312 INFO L276 IsEmpty]: Start isEmpty. Operand 46655 states and 69614 transitions. [2020-10-15 04:46:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2020-10-15 04:46:20,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:20,368 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 17, 17, 15, 15, 13, 13, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:20,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:46:20,369 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:20,369 INFO L82 PathProgramCache]: Analyzing trace with hash -339306517, now seen corresponding path program 1 times [2020-10-15 04:46:20,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:20,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893324562] [2020-10-15 04:46:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:20,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:20,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:20,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:20,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:20,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:20,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:23,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:23,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:25,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:25,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 655 [2020-10-15 04:46:25,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:46:25,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:46:25,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:25,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-15 04:46:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-15 04:46:25,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:25,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:25,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:25,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:25,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:46:25,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:25,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:25,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 3059 proven. 0 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2020-10-15 04:46:25,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893324562] [2020-10-15 04:46:25,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:25,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:25,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140909534] [2020-10-15 04:46:25,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:25,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:25,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:25,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:25,815 INFO L87 Difference]: Start difference. First operand 46655 states and 69614 transitions. Second operand 3 states. [2020-10-15 04:46:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:26,551 INFO L93 Difference]: Finished difference Result 99839 states and 149400 transitions. [2020-10-15 04:46:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:26,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 647 [2020-10-15 04:46:26,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:26,656 INFO L225 Difference]: With dead ends: 99839 [2020-10-15 04:46:26,656 INFO L226 Difference]: Without dead ends: 68817 [2020-10-15 04:46:26,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:26,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68817 states. [2020-10-15 04:46:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68817 to 68815. [2020-10-15 04:46:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68815 states. [2020-10-15 04:46:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68815 states to 68815 states and 103084 transitions. [2020-10-15 04:46:27,987 INFO L78 Accepts]: Start accepts. Automaton has 68815 states and 103084 transitions. Word has length 647 [2020-10-15 04:46:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:27,988 INFO L479 AbstractCegarLoop]: Abstraction has 68815 states and 103084 transitions. [2020-10-15 04:46:27,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 68815 states and 103084 transitions. [2020-10-15 04:46:29,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2020-10-15 04:46:29,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:29,423 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 17, 17, 15, 15, 13, 13, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:29,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:46:29,423 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:29,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:29,423 INFO L82 PathProgramCache]: Analyzing trace with hash -2083759027, now seen corresponding path program 1 times [2020-10-15 04:46:29,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:29,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783002962] [2020-10-15 04:46:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:31,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:34,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 656 [2020-10-15 04:46:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:46:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:46:34,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:34,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-10-15 04:46:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-15 04:46:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:34,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:34,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:34,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:34,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:34,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:34,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:34,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 3061 proven. 0 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2020-10-15 04:46:34,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783002962] [2020-10-15 04:46:34,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:34,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:34,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611761594] [2020-10-15 04:46:34,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:34,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:34,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:34,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:34,719 INFO L87 Difference]: Start difference. First operand 68815 states and 103084 transitions. Second operand 3 states. [2020-10-15 04:46:35,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:35,819 INFO L93 Difference]: Finished difference Result 130679 states and 195324 transitions. [2020-10-15 04:46:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:35,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 648 [2020-10-15 04:46:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:35,906 INFO L225 Difference]: With dead ends: 130679 [2020-10-15 04:46:35,906 INFO L226 Difference]: Without dead ends: 84257 [2020-10-15 04:46:35,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:36,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84257 states. [2020-10-15 04:46:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84257 to 84255. [2020-10-15 04:46:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84255 states. [2020-10-15 04:46:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84255 states to 84255 states and 125916 transitions. [2020-10-15 04:46:37,393 INFO L78 Accepts]: Start accepts. Automaton has 84255 states and 125916 transitions. Word has length 648 [2020-10-15 04:46:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:37,394 INFO L479 AbstractCegarLoop]: Abstraction has 84255 states and 125916 transitions. [2020-10-15 04:46:37,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 84255 states and 125916 transitions. [2020-10-15 04:46:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-10-15 04:46:37,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:37,460 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 17, 17, 15, 15, 13, 13, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:37,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:46:37,460 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:37,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:37,461 INFO L82 PathProgramCache]: Analyzing trace with hash -954526683, now seen corresponding path program 1 times [2020-10-15 04:46:37,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:37,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596125880] [2020-10-15 04:46:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:37,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:38,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:42,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:42,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-15 04:46:42,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:46:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 04:46:42,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:42,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:46:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-15 04:46:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-15 04:46:42,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:42,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:42,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:42,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:42,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:42,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:42,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4388 backedges. 3029 proven. 0 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-15 04:46:43,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596125880] [2020-10-15 04:46:43,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:43,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:46:43,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410513491] [2020-10-15 04:46:43,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:46:43,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:43,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:46:43,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:43,236 INFO L87 Difference]: Start difference. First operand 84255 states and 125916 transitions. Second operand 5 states. [2020-10-15 04:46:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:45,978 INFO L93 Difference]: Finished difference Result 244575 states and 364704 transitions. [2020-10-15 04:46:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:46:45,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 649 [2020-10-15 04:46:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:46,169 INFO L225 Difference]: With dead ends: 244575 [2020-10-15 04:46:46,169 INFO L226 Difference]: Without dead ends: 160333 [2020-10-15 04:46:46,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:46:46,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160333 states. [2020-10-15 04:46:50,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160333 to 77540. [2020-10-15 04:46:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77540 states. [2020-10-15 04:46:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77540 states to 77540 states and 116169 transitions. [2020-10-15 04:46:51,029 INFO L78 Accepts]: Start accepts. Automaton has 77540 states and 116169 transitions. Word has length 649 [2020-10-15 04:46:51,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:51,030 INFO L479 AbstractCegarLoop]: Abstraction has 77540 states and 116169 transitions. [2020-10-15 04:46:51,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:46:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 77540 states and 116169 transitions. [2020-10-15 04:46:51,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2020-10-15 04:46:51,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:51,092 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 19, 19, 18, 18, 16, 16, 14, 14, 12, 12, 11, 11, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:51,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:46:51,093 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:51,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:51,093 INFO L82 PathProgramCache]: Analyzing trace with hash 23174999, now seen corresponding path program 1 times [2020-10-15 04:46:51,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:51,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242311139] [2020-10-15 04:46:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:51,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:51,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:56,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:56,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 672 [2020-10-15 04:46:56,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:46:56,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:46:56,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:56,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:46:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 483 [2020-10-15 04:46:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:46:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:56,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:56,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:56,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:56,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:56,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:56,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:56,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:56,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:56,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4826 backedges. 2165 proven. 26 refuted. 0 times theorem prover too weak. 2635 trivial. 0 not checked. [2020-10-15 04:46:56,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242311139] [2020-10-15 04:46:56,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:56,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 04:46:56,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649801908] [2020-10-15 04:46:56,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:46:56,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:56,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:46:56,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:46:56,346 INFO L87 Difference]: Start difference. First operand 77540 states and 116169 transitions. Second operand 4 states. [2020-10-15 04:46:58,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:58,411 INFO L93 Difference]: Finished difference Result 178663 states and 271450 transitions. [2020-10-15 04:46:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:58,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 664 [2020-10-15 04:46:58,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:58,543 INFO L225 Difference]: With dead ends: 178663 [2020-10-15 04:46:58,543 INFO L226 Difference]: Without dead ends: 98286 [2020-10-15 04:46:58,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98286 states. [2020-10-15 04:47:00,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98286 to 96312. [2020-10-15 04:47:00,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96312 states. [2020-10-15 04:47:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96312 states to 96312 states and 146210 transitions. [2020-10-15 04:47:00,961 INFO L78 Accepts]: Start accepts. Automaton has 96312 states and 146210 transitions. Word has length 664 [2020-10-15 04:47:00,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:00,961 INFO L479 AbstractCegarLoop]: Abstraction has 96312 states and 146210 transitions. [2020-10-15 04:47:00,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:47:00,962 INFO L276 IsEmpty]: Start isEmpty. Operand 96312 states and 146210 transitions. [2020-10-15 04:47:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2020-10-15 04:47:01,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:01,055 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 22, 22, 22, 21, 21, 19, 19, 17, 17, 15, 15, 14, 14, 11, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:01,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:47:01,055 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:01,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2126792386, now seen corresponding path program 1 times [2020-10-15 04:47:01,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:01,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428928553] [2020-10-15 04:47:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:01,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:05,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:06,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:06,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 765 [2020-10-15 04:47:06,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:47:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:47:06,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:06,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:47:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:47:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:06,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:06,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:06,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:06,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:06,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6407 backedges. 1142 proven. 0 refuted. 0 times theorem prover too weak. 5265 trivial. 0 not checked. [2020-10-15 04:47:06,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428928553] [2020-10-15 04:47:06,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:06,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:06,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769728027] [2020-10-15 04:47:06,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:06,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:06,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:06,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:06,617 INFO L87 Difference]: Start difference. First operand 96312 states and 146210 transitions. Second operand 3 states. [2020-10-15 04:47:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:08,448 INFO L93 Difference]: Finished difference Result 205548 states and 312787 transitions. [2020-10-15 04:47:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:08,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 757 [2020-10-15 04:47:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:08,579 INFO L225 Difference]: With dead ends: 205548 [2020-10-15 04:47:08,579 INFO L226 Difference]: Without dead ends: 107143 [2020-10-15 04:47:08,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107143 states. [2020-10-15 04:47:11,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107143 to 105389. [2020-10-15 04:47:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105389 states. [2020-10-15 04:47:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105389 states to 105389 states and 146531 transitions. [2020-10-15 04:47:11,266 INFO L78 Accepts]: Start accepts. Automaton has 105389 states and 146531 transitions. Word has length 757 [2020-10-15 04:47:11,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:11,267 INFO L479 AbstractCegarLoop]: Abstraction has 105389 states and 146531 transitions. [2020-10-15 04:47:11,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 105389 states and 146531 transitions. [2020-10-15 04:47:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-15 04:47:11,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:11,353 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 25, 25, 25, 24, 24, 21, 21, 18, 18, 15, 15, 14, 14, 12, 8, 8, 8, 8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:11,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:47:11,353 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:11,353 INFO L82 PathProgramCache]: Analyzing trace with hash 902336237, now seen corresponding path program 2 times [2020-10-15 04:47:11,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:11,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112107058] [2020-10-15 04:47:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:16,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:16,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 838 [2020-10-15 04:47:16,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:47:16,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:47:16,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:16,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 353 [2020-10-15 04:47:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:47:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:16,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:16,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:16,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:16,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:16,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7920 backedges. 4378 proven. 0 refuted. 0 times theorem prover too weak. 3542 trivial. 0 not checked. [2020-10-15 04:47:16,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112107058] [2020-10-15 04:47:16,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:16,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:16,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693937382] [2020-10-15 04:47:16,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:16,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:16,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:16,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:16,691 INFO L87 Difference]: Start difference. First operand 105389 states and 146531 transitions. Second operand 3 states. [2020-10-15 04:47:19,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:19,974 INFO L93 Difference]: Finished difference Result 227235 states and 318535 transitions. [2020-10-15 04:47:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:19,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 830 [2020-10-15 04:47:19,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:20,119 INFO L225 Difference]: With dead ends: 227235 [2020-10-15 04:47:20,119 INFO L226 Difference]: Without dead ends: 119639 [2020-10-15 04:47:20,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:20,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119639 states. [2020-10-15 04:47:23,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119639 to 115589. [2020-10-15 04:47:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115589 states. [2020-10-15 04:47:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115589 states to 115589 states and 161231 transitions. [2020-10-15 04:47:23,223 INFO L78 Accepts]: Start accepts. Automaton has 115589 states and 161231 transitions. Word has length 830 [2020-10-15 04:47:23,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:23,224 INFO L479 AbstractCegarLoop]: Abstraction has 115589 states and 161231 transitions. [2020-10-15 04:47:23,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 115589 states and 161231 transitions. [2020-10-15 04:47:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2020-10-15 04:47:23,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:23,338 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 29, 29, 29, 28, 28, 25, 25, 22, 22, 19, 19, 18, 18, 15, 11, 11, 8, 8, 8, 8, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:23,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:47:23,338 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1540312976, now seen corresponding path program 1 times [2020-10-15 04:47:23,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:23,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342880331] [2020-10-15 04:47:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:23,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:28,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:28,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 958 [2020-10-15 04:47:28,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:47:28,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 04:47:28,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:28,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 349 [2020-10-15 04:47:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:47:28,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:28,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:28,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:28,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:28,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:28,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10680 backedges. 5525 proven. 0 refuted. 0 times theorem prover too weak. 5155 trivial. 0 not checked. [2020-10-15 04:47:30,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342880331] [2020-10-15 04:47:30,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:30,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:30,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009726471] [2020-10-15 04:47:30,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:30,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:30,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:30,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:30,458 INFO L87 Difference]: Start difference. First operand 115589 states and 161231 transitions. Second operand 3 states. [2020-10-15 04:47:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:32,151 INFO L93 Difference]: Finished difference Result 172703 states and 240433 transitions. [2020-10-15 04:47:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:32,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 950 [2020-10-15 04:47:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:32,247 INFO L225 Difference]: With dead ends: 172703 [2020-10-15 04:47:32,247 INFO L226 Difference]: Without dead ends: 91135 [2020-10-15 04:47:32,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:32,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91135 states. [2020-10-15 04:47:33,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91135 to 60074. [2020-10-15 04:47:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60074 states. [2020-10-15 04:47:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60074 states to 60074 states and 85133 transitions. [2020-10-15 04:47:34,066 INFO L78 Accepts]: Start accepts. Automaton has 60074 states and 85133 transitions. Word has length 950 [2020-10-15 04:47:34,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:34,066 INFO L479 AbstractCegarLoop]: Abstraction has 60074 states and 85133 transitions. [2020-10-15 04:47:34,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:34,067 INFO L276 IsEmpty]: Start isEmpty. Operand 60074 states and 85133 transitions. [2020-10-15 04:47:34,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-15 04:47:34,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:34,123 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 30, 30, 30, 29, 29, 26, 26, 23, 23, 20, 20, 20, 20, 16, 12, 12, 8, 8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:34,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:47:34,124 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:34,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:34,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1911575605, now seen corresponding path program 1 times [2020-10-15 04:47:34,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:34,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736068790] [2020-10-15 04:47:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:34,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:34,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:34,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:34,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:39,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-15 04:47:39,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:47:39,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:47:39,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:39,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-15 04:47:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 04:47:39,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:39,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:39,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:39,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:39,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:39,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:39,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:39,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11518 backedges. 4639 proven. 0 refuted. 0 times theorem prover too weak. 6879 trivial. 0 not checked. [2020-10-15 04:47:39,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736068790] [2020-10-15 04:47:39,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:39,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:39,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075334102] [2020-10-15 04:47:39,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:39,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:39,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:39,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:39,612 INFO L87 Difference]: Start difference. First operand 60074 states and 85133 transitions. Second operand 3 states. [2020-10-15 04:47:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:40,818 INFO L93 Difference]: Finished difference Result 125151 states and 178037 transitions. [2020-10-15 04:47:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:40,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1002 [2020-10-15 04:47:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:40,888 INFO L225 Difference]: With dead ends: 125151 [2020-10-15 04:47:40,888 INFO L226 Difference]: Without dead ends: 65090 [2020-10-15 04:47:40,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:40,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65090 states. [2020-10-15 04:47:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65090 to 64826. [2020-10-15 04:47:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64826 states. [2020-10-15 04:47:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64826 states to 64826 states and 90545 transitions. [2020-10-15 04:47:42,470 INFO L78 Accepts]: Start accepts. Automaton has 64826 states and 90545 transitions. Word has length 1002 [2020-10-15 04:47:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:42,471 INFO L479 AbstractCegarLoop]: Abstraction has 64826 states and 90545 transitions. [2020-10-15 04:47:42,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 64826 states and 90545 transitions. [2020-10-15 04:47:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2020-10-15 04:47:42,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:42,537 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 34, 34, 34, 33, 33, 30, 30, 27, 27, 24, 24, 24, 24, 20, 16, 16, 12, 12, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:42,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:47:42,537 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:42,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:42,538 INFO L82 PathProgramCache]: Analyzing trace with hash -531915491, now seen corresponding path program 1 times [2020-10-15 04:47:42,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:42,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506700577] [2020-10-15 04:47:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:42,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:44,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:45,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:47,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:47,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1142 [2020-10-15 04:47:47,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:47:47,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 04:47:47,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:47,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:47,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:47,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-15 04:47:47,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:47:47,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:47,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:47,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:47,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:47,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:47,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:47,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14972 backedges. 6005 proven. 0 refuted. 0 times theorem prover too weak. 8967 trivial. 0 not checked. [2020-10-15 04:47:48,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506700577] [2020-10-15 04:47:48,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:48,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:48,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636035071] [2020-10-15 04:47:48,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:48,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:48,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:48,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:48,154 INFO L87 Difference]: Start difference. First operand 64826 states and 90545 transitions. Second operand 3 states. [2020-10-15 04:47:49,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:49,415 INFO L93 Difference]: Finished difference Result 132536 states and 185371 transitions. [2020-10-15 04:47:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:49,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1134 [2020-10-15 04:47:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:49,486 INFO L225 Difference]: With dead ends: 132536 [2020-10-15 04:47:49,486 INFO L226 Difference]: Without dead ends: 67127 [2020-10-15 04:47:49,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67127 states. [2020-10-15 04:47:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67127 to 63896. [2020-10-15 04:47:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63896 states. [2020-10-15 04:47:51,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63896 states to 63896 states and 88792 transitions. [2020-10-15 04:47:51,149 INFO L78 Accepts]: Start accepts. Automaton has 63896 states and 88792 transitions. Word has length 1134 [2020-10-15 04:47:51,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:51,149 INFO L479 AbstractCegarLoop]: Abstraction has 63896 states and 88792 transitions. [2020-10-15 04:47:51,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 63896 states and 88792 transitions. [2020-10-15 04:47:51,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1175 [2020-10-15 04:47:51,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:51,212 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 35, 35, 35, 34, 34, 31, 31, 28, 28, 25, 25, 25, 25, 21, 17, 17, 13, 13, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:51,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:47:51,212 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:51,213 INFO L82 PathProgramCache]: Analyzing trace with hash 288771914, now seen corresponding path program 1 times [2020-10-15 04:47:51,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:51,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369280229] [2020-10-15 04:47:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:51,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:52,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:56,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:56,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1182 [2020-10-15 04:47:56,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:47:56,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-15 04:47:56,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:56,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1020 [2020-10-15 04:47:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:47:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:56,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:56,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:56,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:56,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:56,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:56,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:56,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15941 backedges. 4145 proven. 0 refuted. 0 times theorem prover too weak. 11796 trivial. 0 not checked. [2020-10-15 04:47:56,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369280229] [2020-10-15 04:47:56,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:56,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:56,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687277498] [2020-10-15 04:47:56,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:56,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:56,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:56,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:56,997 INFO L87 Difference]: Start difference. First operand 63896 states and 88792 transitions. Second operand 3 states. [2020-10-15 04:47:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:58,410 INFO L93 Difference]: Finished difference Result 132205 states and 183309 transitions. [2020-10-15 04:47:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:58,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1174 [2020-10-15 04:47:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:58,480 INFO L225 Difference]: With dead ends: 132205 [2020-10-15 04:47:58,480 INFO L226 Difference]: Without dead ends: 65640 [2020-10-15 04:47:58,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65640 states. [2020-10-15 04:47:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65640 to 59040. [2020-10-15 04:47:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59040 states. [2020-10-15 04:47:59,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59040 states to 59040 states and 80185 transitions. [2020-10-15 04:47:59,788 INFO L78 Accepts]: Start accepts. Automaton has 59040 states and 80185 transitions. Word has length 1174 [2020-10-15 04:47:59,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:59,789 INFO L479 AbstractCegarLoop]: Abstraction has 59040 states and 80185 transitions. [2020-10-15 04:47:59,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 59040 states and 80185 transitions. [2020-10-15 04:48:00,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1176 [2020-10-15 04:48:00,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:00,174 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 35, 35, 35, 34, 34, 31, 31, 28, 28, 25, 25, 25, 25, 21, 17, 17, 13, 13, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:48:00,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:48:00,174 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:00,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:00,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1321974512, now seen corresponding path program 1 times [2020-10-15 04:48:00,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:00,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719973491] [2020-10-15 04:48:00,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:00,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:01,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:01,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:05,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:05,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1183 [2020-10-15 04:48:05,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:48:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:48:05,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:05,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1021 [2020-10-15 04:48:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:48:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:05,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:05,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:05,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:05,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:48:05,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:48:05,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:05,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15941 backedges. 4145 proven. 0 refuted. 0 times theorem prover too weak. 11796 trivial. 0 not checked. [2020-10-15 04:48:06,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719973491] [2020-10-15 04:48:06,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:06,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:48:06,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627942650] [2020-10-15 04:48:06,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:48:06,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:06,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:48:06,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:06,036 INFO L87 Difference]: Start difference. First operand 59040 states and 80185 transitions. Second operand 3 states. [2020-10-15 04:48:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:07,327 INFO L93 Difference]: Finished difference Result 127319 states and 173468 transitions. [2020-10-15 04:48:07,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:48:07,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1175 [2020-10-15 04:48:07,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:07,394 INFO L225 Difference]: With dead ends: 127319 [2020-10-15 04:48:07,394 INFO L226 Difference]: Without dead ends: 65751 [2020-10-15 04:48:07,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:07,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65751 states. [2020-10-15 04:48:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65751 to 56127. [2020-10-15 04:48:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56127 states. [2020-10-15 04:48:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56127 states to 56127 states and 76825 transitions. [2020-10-15 04:48:08,995 INFO L78 Accepts]: Start accepts. Automaton has 56127 states and 76825 transitions. Word has length 1175 [2020-10-15 04:48:08,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:08,996 INFO L479 AbstractCegarLoop]: Abstraction has 56127 states and 76825 transitions. [2020-10-15 04:48:08,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:48:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 56127 states and 76825 transitions. [2020-10-15 04:48:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2020-10-15 04:48:09,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:09,046 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 38, 38, 38, 37, 37, 33, 33, 29, 29, 25, 25, 25, 25, 21, 17, 17, 13, 13, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:48:09,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:48:09,046 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:09,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:09,047 INFO L82 PathProgramCache]: Analyzing trace with hash 896424425, now seen corresponding path program 2 times [2020-10-15 04:48:09,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:09,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564464878] [2020-10-15 04:48:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:09,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:10,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:10,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:13,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:14,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:14,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1275 [2020-10-15 04:48:14,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:48:14,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5621 [2020-10-15 04:48:14,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:14,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 727 [2020-10-15 04:48:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 04:48:14,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:14,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:14,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:48:14,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:48:14,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:14,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:48:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18780 backedges. 9840 proven. 0 refuted. 0 times theorem prover too weak. 8940 trivial. 0 not checked. [2020-10-15 04:48:15,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564464878] [2020-10-15 04:48:15,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:15,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:48:15,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103463301] [2020-10-15 04:48:15,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:48:15,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:15,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:48:15,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:15,370 INFO L87 Difference]: Start difference. First operand 56127 states and 76825 transitions. Second operand 3 states. [2020-10-15 04:48:16,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:16,600 INFO L93 Difference]: Finished difference Result 115889 states and 158526 transitions. [2020-10-15 04:48:16,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:48:16,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1267 [2020-10-15 04:48:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:16,667 INFO L225 Difference]: With dead ends: 115889 [2020-10-15 04:48:16,667 INFO L226 Difference]: Without dead ends: 59617 [2020-10-15 04:48:16,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:16,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59617 states. [2020-10-15 04:48:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59617 to 56027. [2020-10-15 04:48:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56027 states. [2020-10-15 04:48:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56027 states to 56027 states and 76525 transitions. [2020-10-15 04:48:18,250 INFO L78 Accepts]: Start accepts. Automaton has 56027 states and 76525 transitions. Word has length 1267 [2020-10-15 04:48:18,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:18,251 INFO L479 AbstractCegarLoop]: Abstraction has 56027 states and 76525 transitions. [2020-10-15 04:48:18,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:48:18,251 INFO L276 IsEmpty]: Start isEmpty. Operand 56027 states and 76525 transitions. [2020-10-15 04:48:18,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1331 [2020-10-15 04:48:18,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:18,303 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 41, 41, 41, 37, 37, 33, 33, 29, 29, 25, 25, 25, 25, 21, 17, 17, 13, 13, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:48:18,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 04:48:18,303 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:18,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:18,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1159779417, now seen corresponding path program 1 times [2020-10-15 04:48:18,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:18,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061810444] [2020-10-15 04:48:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:18,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:18,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:22,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:22,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1338 [2020-10-15 04:48:22,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:48:22,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3939 [2020-10-15 04:48:22,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:22,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1047 [2020-10-15 04:48:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 290 [2020-10-15 04:48:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:22,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:22,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:48:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:48:22,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:22,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 20847 backedges. 7398 proven. 0 refuted. 0 times theorem prover too weak. 13449 trivial. 0 not checked. [2020-10-15 04:48:23,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061810444] [2020-10-15 04:48:23,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:23,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:48:23,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975686095] [2020-10-15 04:48:23,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:48:23,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:23,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:48:23,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:23,216 INFO L87 Difference]: Start difference. First operand 56027 states and 76525 transitions. Second operand 3 states. [2020-10-15 04:48:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:24,323 INFO L93 Difference]: Finished difference Result 61711 states and 84333 transitions. [2020-10-15 04:48:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:48:24,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1330 [2020-10-15 04:48:24,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:24,384 INFO L225 Difference]: With dead ends: 61711 [2020-10-15 04:48:24,384 INFO L226 Difference]: Without dead ends: 61709 [2020-10-15 04:48:24,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61709 states. [2020-10-15 04:48:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61709 to 61709. [2020-10-15 04:48:25,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61709 states. [2020-10-15 04:48:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61709 states to 61709 states and 84322 transitions. [2020-10-15 04:48:25,847 INFO L78 Accepts]: Start accepts. Automaton has 61709 states and 84322 transitions. Word has length 1330 [2020-10-15 04:48:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:25,849 INFO L479 AbstractCegarLoop]: Abstraction has 61709 states and 84322 transitions. [2020-10-15 04:48:25,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:48:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 61709 states and 84322 transitions. [2020-10-15 04:48:25,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1361 [2020-10-15 04:48:25,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:25,907 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 42, 42, 42, 38, 38, 34, 34, 30, 30, 26, 26, 26, 26, 22, 18, 18, 14, 14, 10, 10, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-15 04:48:25,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 04:48:25,907 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:25,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1650772254, now seen corresponding path program 1 times [2020-10-15 04:48:25,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:25,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497144388] [2020-10-15 04:48:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:27,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:27,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1368 [2020-10-15 04:48:27,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:48:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1521 [2020-10-15 04:48:27,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:27,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:27,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:27,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 372 [2020-10-15 04:48:27,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:48:27,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:27,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:27,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:27,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:48:27,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:27,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:48:27,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:27,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:27,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 21752 backedges. 9087 proven. 0 refuted. 0 times theorem prover too weak. 12665 trivial. 0 not checked. [2020-10-15 04:48:28,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497144388] [2020-10-15 04:48:28,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:28,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:48:28,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118284601] [2020-10-15 04:48:28,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:48:28,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:28,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:48:28,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:28,364 INFO L87 Difference]: Start difference. First operand 61709 states and 84322 transitions. Second operand 3 states. [2020-10-15 04:48:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:29,642 INFO L93 Difference]: Finished difference Result 127533 states and 174480 transitions. [2020-10-15 04:48:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:48:29,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1360 [2020-10-15 04:48:29,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:29,705 INFO L225 Difference]: With dead ends: 127533 [2020-10-15 04:48:29,705 INFO L226 Difference]: Without dead ends: 65219 [2020-10-15 04:48:29,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65219 states.