/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:10:34,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:10:34,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:10:34,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:10:34,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:10:34,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:10:34,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:10:34,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:10:34,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:10:34,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:10:34,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:10:34,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:10:34,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:10:34,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:10:34,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:10:34,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:10:34,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:10:34,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:10:34,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:10:34,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:10:34,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:10:34,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:10:34,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:10:34,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:10:34,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:10:34,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:10:34,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:10:34,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:10:34,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:10:34,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:10:34,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:10:34,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:10:34,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:10:34,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:10:34,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:10:34,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:10:34,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:10:34,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:10:34,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:10:34,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:10:34,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:10:34,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:10:34,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:10:34,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:10:34,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:10:34,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:10:34,633 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:10:34,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:10:34,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:10:34,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:10:34,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:10:34,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:10:34,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:10:34,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:10:34,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:10:34,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:10:34,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:10:34,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:10:34,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:10:34,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:10:34,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:10:34,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:10:34,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:10:34,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:10:34,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:10:34,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:10:34,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:10:34,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:10:34,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:10:34,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:10:34,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:10:34,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:10:35,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:10:35,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:10:35,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:10:35,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:10:35,143 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:10:35,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 11:10:35,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8487f1b42/ba22e2dc8bc04d99aacc19b229a517e4/FLAG0889ba177 [2020-09-25 11:10:35,783 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:10:35,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 11:10:35,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8487f1b42/ba22e2dc8bc04d99aacc19b229a517e4/FLAG0889ba177 [2020-09-25 11:10:36,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8487f1b42/ba22e2dc8bc04d99aacc19b229a517e4 [2020-09-25 11:10:36,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:10:36,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:10:36,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:36,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:10:36,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:10:36,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:36" (1/1) ... [2020-09-25 11:10:36,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87e4b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36, skipping insertion in model container [2020-09-25 11:10:36,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:36" (1/1) ... [2020-09-25 11:10:36,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:10:36,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:10:36,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:36,537 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:10:36,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:36,719 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:10:36,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36 WrapperNode [2020-09-25 11:10:36,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:36,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:10:36,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:10:36,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:10:36,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36" (1/1) ... [2020-09-25 11:10:36,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36" (1/1) ... [2020-09-25 11:10:36,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36" (1/1) ... [2020-09-25 11:10:36,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36" (1/1) ... [2020-09-25 11:10:36,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36" (1/1) ... [2020-09-25 11:10:36,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36" (1/1) ... [2020-09-25 11:10:36,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36" (1/1) ... [2020-09-25 11:10:36,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:10:36,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:10:36,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:10:36,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:10:36,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:10:36,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:10:36,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:10:36,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 11:10:36,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:10:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:10:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 11:10:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:10:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 11:10:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-25 11:10:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 11:10:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:10:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:10:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:10:37,126 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 11:10:37,855 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 11:10:37,855 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 11:10:37,873 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:10:37,873 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:10:37,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:37 BoogieIcfgContainer [2020-09-25 11:10:37,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:10:37,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:10:37,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:10:37,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:10:37,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:10:36" (1/3) ... [2020-09-25 11:10:37,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a60f093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:37, skipping insertion in model container [2020-09-25 11:10:37,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:36" (2/3) ... [2020-09-25 11:10:37,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a60f093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:37, skipping insertion in model container [2020-09-25 11:10:37,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:37" (3/3) ... [2020-09-25 11:10:37,892 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-25 11:10:37,904 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:10:37,915 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:10:37,937 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:10:37,971 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:10:37,972 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:10:37,972 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:10:37,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:10:37,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:10:37,973 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:10:37,973 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:10:37,973 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:10:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-25 11:10:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 11:10:38,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:38,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:38,041 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:38,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-25 11:10:38,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:38,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852815878] [2020-09-25 11:10:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:38,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:39,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:39,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:39,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 11:10:39,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:39,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1394 [2020-09-25 11:10:39,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:39,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:10:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:10:39,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 11:10:39,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:10:39,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:39,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:39,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:39,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:39,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:39,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:39,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:39,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:39,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852815878] [2020-09-25 11:10:39,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:39,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:10:39,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530474786] [2020-09-25 11:10:39,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:10:39,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:39,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:10:39,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:10:39,948 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 6 states. [2020-09-25 11:10:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:40,324 INFO L93 Difference]: Finished difference Result 845 states and 1110 transitions. [2020-09-25 11:10:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:10:40,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 11:10:40,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:40,348 INFO L225 Difference]: With dead ends: 845 [2020-09-25 11:10:40,349 INFO L226 Difference]: Without dead ends: 472 [2020-09-25 11:10:40,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:10:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-09-25 11:10:40,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 461. [2020-09-25 11:10:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-09-25 11:10:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 560 transitions. [2020-09-25 11:10:40,439 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 560 transitions. Word has length 161 [2020-09-25 11:10:40,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:40,440 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 560 transitions. [2020-09-25 11:10:40,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:10:40,441 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 560 transitions. [2020-09-25 11:10:40,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 11:10:40,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:40,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:40,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:10:40,448 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:40,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:40,449 INFO L82 PathProgramCache]: Analyzing trace with hash 508400321, now seen corresponding path program 1 times [2020-09-25 11:10:40,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:40,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351071939] [2020-09-25 11:10:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:40,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:40,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:40,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:41,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:41,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 11:10:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-09-25 11:10:41,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:41,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:10:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:10:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 11:10:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:41,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:41,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:41,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:41,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:41,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:41,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:41,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351071939] [2020-09-25 11:10:41,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:41,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:10:41,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309211112] [2020-09-25 11:10:41,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:10:41,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:41,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:10:41,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:10:41,851 INFO L87 Difference]: Start difference. First operand 461 states and 560 transitions. Second operand 7 states. [2020-09-25 11:10:42,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:42,284 INFO L93 Difference]: Finished difference Result 941 states and 1195 transitions. [2020-09-25 11:10:42,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:10:42,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-25 11:10:42,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:42,291 INFO L225 Difference]: With dead ends: 941 [2020-09-25 11:10:42,291 INFO L226 Difference]: Without dead ends: 607 [2020-09-25 11:10:42,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:10:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-09-25 11:10:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 570. [2020-09-25 11:10:42,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-09-25 11:10:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 691 transitions. [2020-09-25 11:10:42,334 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 691 transitions. Word has length 170 [2020-09-25 11:10:42,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:42,336 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 691 transitions. [2020-09-25 11:10:42,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:10:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 691 transitions. [2020-09-25 11:10:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 11:10:42,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:42,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:42,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:10:42,345 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:42,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:42,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2044458217, now seen corresponding path program 1 times [2020-09-25 11:10:42,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:42,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6865404] [2020-09-25 11:10:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:42,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:43,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:43,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 11:10:43,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:10:43,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-09-25 11:10:43,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:43,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 11:10:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:10:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:43,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:43,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:43,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:43,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:43,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:43,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:43,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:43,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:43,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 11:10:43,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6865404] [2020-09-25 11:10:43,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:43,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:43,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849422863] [2020-09-25 11:10:43,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:43,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:43,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:43,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:43,368 INFO L87 Difference]: Start difference. First operand 570 states and 691 transitions. Second operand 3 states. [2020-09-25 11:10:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:43,483 INFO L93 Difference]: Finished difference Result 1017 states and 1256 transitions. [2020-09-25 11:10:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:43,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2020-09-25 11:10:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:43,488 INFO L225 Difference]: With dead ends: 1017 [2020-09-25 11:10:43,488 INFO L226 Difference]: Without dead ends: 586 [2020-09-25 11:10:43,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:43,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-25 11:10:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2020-09-25 11:10:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-09-25 11:10:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 707 transitions. [2020-09-25 11:10:43,516 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 707 transitions. Word has length 186 [2020-09-25 11:10:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:43,517 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 707 transitions. [2020-09-25 11:10:43,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 707 transitions. [2020-09-25 11:10:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 11:10:43,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:43,520 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:43,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:10:43,521 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:43,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:43,521 INFO L82 PathProgramCache]: Analyzing trace with hash 570616873, now seen corresponding path program 1 times [2020-09-25 11:10:43,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:43,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650689915] [2020-09-25 11:10:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:43,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:43,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:43,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:44,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:44,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 11:10:44,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:44,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-09-25 11:10:44,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:44,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:10:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 11:10:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:10:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:44,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:44,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:44,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:44,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:44,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:44,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:44,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:44,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:44,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:44,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650689915] [2020-09-25 11:10:44,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:10:44,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 11:10:44,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555617606] [2020-09-25 11:10:44,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:10:44,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:44,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:10:44,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:10:44,136 INFO L87 Difference]: Start difference. First operand 586 states and 707 transitions. Second operand 4 states. [2020-09-25 11:10:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:44,461 INFO L93 Difference]: Finished difference Result 1237 states and 1555 transitions. [2020-09-25 11:10:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:10:44,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-09-25 11:10:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:44,467 INFO L225 Difference]: With dead ends: 1237 [2020-09-25 11:10:44,468 INFO L226 Difference]: Without dead ends: 794 [2020-09-25 11:10:44,470 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 [2020-09-25 11:10:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2020-09-25 11:10:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 696. [2020-09-25 11:10:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 11:10:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 849 transitions. [2020-09-25 11:10:44,498 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 849 transitions. Word has length 187 [2020-09-25 11:10:44,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:44,499 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 849 transitions. [2020-09-25 11:10:44,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:10:44,499 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 849 transitions. [2020-09-25 11:10:44,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 11:10:44,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:44,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:44,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:10:44,506 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:44,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:44,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1436054601, now seen corresponding path program 1 times [2020-09-25 11:10:44,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:44,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930442644] [2020-09-25 11:10:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:45,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:45,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 11:10:45,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1230 [2020-09-25 11:10:45,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:45,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:10:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 11:10:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:10:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:45,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:45,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:45,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:45,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:45,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:45,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:45,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:45,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930442644] [2020-09-25 11:10:45,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:10:45,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:10:45,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112807540] [2020-09-25 11:10:45,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:10:45,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:45,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:10:45,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:10:45,860 INFO L87 Difference]: Start difference. First operand 696 states and 849 transitions. Second operand 5 states. [2020-09-25 11:10:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:46,286 INFO L93 Difference]: Finished difference Result 1991 states and 2520 transitions. [2020-09-25 11:10:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:10:46,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-09-25 11:10:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:46,293 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 11:10:46,293 INFO L226 Difference]: Without dead ends: 1420 [2020-09-25 11:10:46,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:10:46,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-09-25 11:10:46,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 752. [2020-09-25 11:10:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2020-09-25 11:10:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 918 transitions. [2020-09-25 11:10:46,321 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 918 transitions. Word has length 195 [2020-09-25 11:10:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:46,322 INFO L479 AbstractCegarLoop]: Abstraction has 752 states and 918 transitions. [2020-09-25 11:10:46,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:10:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 918 transitions. [2020-09-25 11:10:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 11:10:46,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:46,325 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:46,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:10:46,325 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:46,326 INFO L82 PathProgramCache]: Analyzing trace with hash 753761194, now seen corresponding path program 1 times [2020-09-25 11:10:46,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:46,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520154874] [2020-09-25 11:10:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:46,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 11:10:47,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:10:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-09-25 11:10:47,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 11:10:47,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:10:47,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:10:47,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:47,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:47,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:47,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:47,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:10:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 11:10:47,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520154874] [2020-09-25 11:10:47,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:47,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:47,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690145712] [2020-09-25 11:10:47,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:47,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:47,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:47,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:47,466 INFO L87 Difference]: Start difference. First operand 752 states and 918 transitions. Second operand 3 states. [2020-09-25 11:10:47,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:47,578 INFO L93 Difference]: Finished difference Result 1416 states and 1757 transitions. [2020-09-25 11:10:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:47,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-09-25 11:10:47,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:47,583 INFO L225 Difference]: With dead ends: 1416 [2020-09-25 11:10:47,584 INFO L226 Difference]: Without dead ends: 819 [2020-09-25 11:10:47,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-09-25 11:10:47,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2020-09-25 11:10:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-09-25 11:10:47,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 997 transitions. [2020-09-25 11:10:47,608 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 997 transitions. Word has length 214 [2020-09-25 11:10:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:47,608 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 997 transitions. [2020-09-25 11:10:47,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:47,609 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 997 transitions. [2020-09-25 11:10:47,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 11:10:47,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:47,612 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:47,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:10:47,613 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:47,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:47,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1004366699, now seen corresponding path program 1 times [2020-09-25 11:10:47,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:47,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268554355] [2020-09-25 11:10:47,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 11:10:48,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-09-25 11:10:48,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:10:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 11:10:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:10:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:48,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:48,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:48,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:10:48,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268554355] [2020-09-25 11:10:48,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:10:48,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 11:10:48,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664540021] [2020-09-25 11:10:48,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:10:48,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:48,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:10:48,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:10:48,297 INFO L87 Difference]: Start difference. First operand 819 states and 997 transitions. Second operand 4 states. [2020-09-25 11:10:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:48,636 INFO L93 Difference]: Finished difference Result 1775 states and 2225 transitions. [2020-09-25 11:10:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:10:48,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2020-09-25 11:10:48,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:48,642 INFO L225 Difference]: With dead ends: 1775 [2020-09-25 11:10:48,642 INFO L226 Difference]: Without dead ends: 1034 [2020-09-25 11:10:48,644 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 [2020-09-25 11:10:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-09-25 11:10:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 985. [2020-09-25 11:10:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-25 11:10:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1205 transitions. [2020-09-25 11:10:48,670 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1205 transitions. Word has length 215 [2020-09-25 11:10:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:48,671 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1205 transitions. [2020-09-25 11:10:48,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:10:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1205 transitions. [2020-09-25 11:10:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 11:10:48,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:48,674 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:48,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:10:48,674 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:48,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:48,675 INFO L82 PathProgramCache]: Analyzing trace with hash -700807115, now seen corresponding path program 1 times [2020-09-25 11:10:48,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:48,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864831292] [2020-09-25 11:10:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:49,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 11:10:49,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-25 11:10:49,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:49,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:10:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 11:10:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:10:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:49,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:49,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:49,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:49,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:49,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:49,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:49,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:10:49,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864831292] [2020-09-25 11:10:49,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:10:49,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 11:10:49,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790844835] [2020-09-25 11:10:49,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:10:49,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:49,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:10:49,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:10:49,327 INFO L87 Difference]: Start difference. First operand 985 states and 1205 transitions. Second operand 4 states. [2020-09-25 11:10:49,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:49,617 INFO L93 Difference]: Finished difference Result 2235 states and 2790 transitions. [2020-09-25 11:10:49,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:10:49,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2020-09-25 11:10:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:49,632 INFO L225 Difference]: With dead ends: 2235 [2020-09-25 11:10:49,632 INFO L226 Difference]: Without dead ends: 1356 [2020-09-25 11:10:49,635 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 [2020-09-25 11:10:49,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2020-09-25 11:10:49,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1084. [2020-09-25 11:10:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-09-25 11:10:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1337 transitions. [2020-09-25 11:10:49,704 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1337 transitions. Word has length 215 [2020-09-25 11:10:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:49,705 INFO L479 AbstractCegarLoop]: Abstraction has 1084 states and 1337 transitions. [2020-09-25 11:10:49,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:10:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1337 transitions. [2020-09-25 11:10:49,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 11:10:49,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:49,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:49,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:10:49,713 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash -563154763, now seen corresponding path program 1 times [2020-09-25 11:10:49,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:49,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874942196] [2020-09-25 11:10:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:50,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 11:10:50,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:50,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-25 11:10:50,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:50,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:10:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 11:10:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:10:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:50,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:50,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:50,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:50,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:50,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:50,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:50,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:50,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:10:50,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874942196] [2020-09-25 11:10:50,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:10:50,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:10:50,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864448825] [2020-09-25 11:10:50,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:10:50,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:50,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:10:50,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:10:50,896 INFO L87 Difference]: Start difference. First operand 1084 states and 1337 transitions. Second operand 5 states. [2020-09-25 11:10:51,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:51,702 INFO L93 Difference]: Finished difference Result 3913 states and 4958 transitions. [2020-09-25 11:10:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:10:51,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-09-25 11:10:51,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:51,718 INFO L225 Difference]: With dead ends: 3913 [2020-09-25 11:10:51,719 INFO L226 Difference]: Without dead ends: 2984 [2020-09-25 11:10:51,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:10:51,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-09-25 11:10:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1371. [2020-09-25 11:10:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2020-09-25 11:10:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1718 transitions. [2020-09-25 11:10:51,904 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1718 transitions. Word has length 223 [2020-09-25 11:10:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:51,905 INFO L479 AbstractCegarLoop]: Abstraction has 1371 states and 1718 transitions. [2020-09-25 11:10:51,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:10:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1718 transitions. [2020-09-25 11:10:51,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 11:10:51,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:51,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:51,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:10:51,915 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:51,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:51,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1647539560, now seen corresponding path program 1 times [2020-09-25 11:10:51,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:51,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400780977] [2020-09-25 11:10:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:51,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:52,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 11:10:52,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:10:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-09-25 11:10:52,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:52,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 11:10:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:10:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:52,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:52,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:52,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:52,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:52,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:52,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:10:52,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400780977] [2020-09-25 11:10:52,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:52,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:52,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327951127] [2020-09-25 11:10:52,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:52,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:52,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:52,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:52,609 INFO L87 Difference]: Start difference. First operand 1371 states and 1718 transitions. Second operand 3 states. [2020-09-25 11:10:52,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:52,819 INFO L93 Difference]: Finished difference Result 3685 states and 4706 transitions. [2020-09-25 11:10:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:52,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2020-09-25 11:10:52,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:52,831 INFO L225 Difference]: With dead ends: 3685 [2020-09-25 11:10:52,832 INFO L226 Difference]: Without dead ends: 2469 [2020-09-25 11:10:52,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-09-25 11:10:52,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2020-09-25 11:10:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2020-09-25 11:10:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3103 transitions. [2020-09-25 11:10:52,931 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3103 transitions. Word has length 238 [2020-09-25 11:10:52,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:52,932 INFO L479 AbstractCegarLoop]: Abstraction has 2467 states and 3103 transitions. [2020-09-25 11:10:52,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:52,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3103 transitions. [2020-09-25 11:10:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 11:10:52,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:52,937 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:52,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:10:52,938 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:52,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:52,938 INFO L82 PathProgramCache]: Analyzing trace with hash 214992874, now seen corresponding path program 1 times [2020-09-25 11:10:52,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:52,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240777812] [2020-09-25 11:10:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:53,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:53,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:53,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 11:10:53,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-09-25 11:10:53,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:53,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 11:10:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:10:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:53,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:53,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:53,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:53,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:53,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:53,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:53,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:53,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:53,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:10:53,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240777812] [2020-09-25 11:10:53,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:53,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:53,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361718684] [2020-09-25 11:10:53,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:53,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:53,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:53,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:53,946 INFO L87 Difference]: Start difference. First operand 2467 states and 3103 transitions. Second operand 3 states. [2020-09-25 11:10:54,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:54,232 INFO L93 Difference]: Finished difference Result 5032 states and 6457 transitions. [2020-09-25 11:10:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:54,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2020-09-25 11:10:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:54,245 INFO L225 Difference]: With dead ends: 5032 [2020-09-25 11:10:54,245 INFO L226 Difference]: Without dead ends: 2624 [2020-09-25 11:10:54,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2020-09-25 11:10:54,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2511. [2020-09-25 11:10:54,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-09-25 11:10:54,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3155 transitions. [2020-09-25 11:10:54,346 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3155 transitions. Word has length 246 [2020-09-25 11:10:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:54,347 INFO L479 AbstractCegarLoop]: Abstraction has 2511 states and 3155 transitions. [2020-09-25 11:10:54,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3155 transitions. [2020-09-25 11:10:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 11:10:54,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:54,355 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:54,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:10:54,356 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:54,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1339093142, now seen corresponding path program 1 times [2020-09-25 11:10:54,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:54,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195274257] [2020-09-25 11:10:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:55,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:55,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 11:10:55,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:10:55,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1061 [2020-09-25 11:10:55,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:55,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:10:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 11:10:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 11:10:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:55,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:55,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:55,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:55,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:55,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:55,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:55,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:10:55,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195274257] [2020-09-25 11:10:55,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:55,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:10:55,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813198848] [2020-09-25 11:10:55,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:10:55,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:55,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:10:55,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:10:55,579 INFO L87 Difference]: Start difference. First operand 2511 states and 3155 transitions. Second operand 4 states. [2020-09-25 11:10:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:56,278 INFO L93 Difference]: Finished difference Result 7311 states and 9299 transitions. [2020-09-25 11:10:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:10:56,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 254 [2020-09-25 11:10:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:56,310 INFO L225 Difference]: With dead ends: 7311 [2020-09-25 11:10:56,310 INFO L226 Difference]: Without dead ends: 4955 [2020-09-25 11:10:56,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:10:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4955 states. [2020-09-25 11:10:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4955 to 2585. [2020-09-25 11:10:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2585 states. [2020-09-25 11:10:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3235 transitions. [2020-09-25 11:10:56,476 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3235 transitions. Word has length 254 [2020-09-25 11:10:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:56,477 INFO L479 AbstractCegarLoop]: Abstraction has 2585 states and 3235 transitions. [2020-09-25 11:10:56,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:10:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3235 transitions. [2020-09-25 11:10:56,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 11:10:56,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:56,488 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:56,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 11:10:56,488 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:56,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:56,489 INFO L82 PathProgramCache]: Analyzing trace with hash -527284278, now seen corresponding path program 1 times [2020-09-25 11:10:56,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:56,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953524095] [2020-09-25 11:10:56,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:57,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:57,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 11:10:57,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1220 [2020-09-25 11:10:57,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:57,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:10:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 11:10:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 11:10:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:57,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:57,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:57,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:57,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:57,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:57,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:10:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:10:57,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953524095] [2020-09-25 11:10:57,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:57,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:10:57,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807866477] [2020-09-25 11:10:57,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:10:57,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:57,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:10:57,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:10:57,919 INFO L87 Difference]: Start difference. First operand 2585 states and 3235 transitions. Second operand 4 states. [2020-09-25 11:10:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:58,535 INFO L93 Difference]: Finished difference Result 7597 states and 9705 transitions. [2020-09-25 11:10:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:10:58,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 254 [2020-09-25 11:10:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:58,558 INFO L225 Difference]: With dead ends: 7597 [2020-09-25 11:10:58,559 INFO L226 Difference]: Without dead ends: 5167 [2020-09-25 11:10:58,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:10:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states. [2020-09-25 11:10:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 2599. [2020-09-25 11:10:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2599 states. [2020-09-25 11:10:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 3249 transitions. [2020-09-25 11:10:58,688 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 3249 transitions. Word has length 254 [2020-09-25 11:10:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:58,689 INFO L479 AbstractCegarLoop]: Abstraction has 2599 states and 3249 transitions. [2020-09-25 11:10:58,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:10:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 3249 transitions. [2020-09-25 11:10:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-25 11:10:58,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:58,695 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:58,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 11:10:58,696 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:58,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:58,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1490807437, now seen corresponding path program 1 times [2020-09-25 11:10:58,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:58,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926574913] [2020-09-25 11:10:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:58,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:58,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:59,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:59,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:59,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:03,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:03,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 11:11:03,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:11:03,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:11:03,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:03,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:11:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 227 [2020-09-25 11:11:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:11:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:03,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:03,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:03,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:11:03,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:03,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:11:03,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:03,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:03,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 11:11:03,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926574913] [2020-09-25 11:11:03,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:03,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:11:03,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259204388] [2020-09-25 11:11:03,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:11:03,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:03,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:11:03,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:11:03,869 INFO L87 Difference]: Start difference. First operand 2599 states and 3249 transitions. Second operand 3 states. [2020-09-25 11:11:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:03,990 INFO L93 Difference]: Finished difference Result 7359 states and 9274 transitions. [2020-09-25 11:11:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:11:03,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2020-09-25 11:11:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:04,013 INFO L225 Difference]: With dead ends: 7359 [2020-09-25 11:11:04,013 INFO L226 Difference]: Without dead ends: 4915 [2020-09-25 11:11:04,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:11:04,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2020-09-25 11:11:04,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 4913. [2020-09-25 11:11:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4913 states. [2020-09-25 11:11:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4913 states to 4913 states and 6177 transitions. [2020-09-25 11:11:04,162 INFO L78 Accepts]: Start accepts. Automaton has 4913 states and 6177 transitions. Word has length 258 [2020-09-25 11:11:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:04,163 INFO L479 AbstractCegarLoop]: Abstraction has 4913 states and 6177 transitions. [2020-09-25 11:11:04,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:11:04,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4913 states and 6177 transitions. [2020-09-25 11:11:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 11:11:04,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:04,171 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:04,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 11:11:04,171 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:04,171 INFO L82 PathProgramCache]: Analyzing trace with hash 98858191, now seen corresponding path program 1 times [2020-09-25 11:11:04,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:04,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983223681] [2020-09-25 11:11:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:04,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:05,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:07,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:07,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 11:11:07,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:11:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3152 [2020-09-25 11:11:07,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:07,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:11:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 11:11:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:11:07,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:11:07,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:07,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:07,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:11:07,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:11:07,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:07,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:07,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:11:07,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983223681] [2020-09-25 11:11:07,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:07,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:11:07,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987357447] [2020-09-25 11:11:07,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:11:07,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:07,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:11:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:11:07,471 INFO L87 Difference]: Start difference. First operand 4913 states and 6177 transitions. Second operand 4 states. [2020-09-25 11:11:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:07,985 INFO L93 Difference]: Finished difference Result 14689 states and 18517 transitions. [2020-09-25 11:11:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:11:07,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2020-09-25 11:11:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:08,018 INFO L225 Difference]: With dead ends: 14689 [2020-09-25 11:11:08,018 INFO L226 Difference]: Without dead ends: 9931 [2020-09-25 11:11:08,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:11:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9931 states. [2020-09-25 11:11:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9931 to 4997. [2020-09-25 11:11:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4997 states. [2020-09-25 11:11:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 6265 transitions. [2020-09-25 11:11:08,226 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 6265 transitions. Word has length 261 [2020-09-25 11:11:08,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:08,227 INFO L479 AbstractCegarLoop]: Abstraction has 4997 states and 6265 transitions. [2020-09-25 11:11:08,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:11:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 6265 transitions. [2020-09-25 11:11:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 11:11:08,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:08,235 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:08,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 11:11:08,235 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:08,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:08,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1830826787, now seen corresponding path program 1 times [2020-09-25 11:11:08,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:08,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486118768] [2020-09-25 11:11:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:08,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:08,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:08,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:08,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 11:11:08,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:11:08,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-25 11:11:08,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:08,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:11:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-09-25 11:11:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:11:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:08,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:08,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:08,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:08,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:11:08,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:11:08,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:08,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:08,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:08,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:08,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:08,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 11:11:08,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486118768] [2020-09-25 11:11:08,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:08,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:11:08,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846121952] [2020-09-25 11:11:08,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:11:08,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:08,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:11:08,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:11:08,954 INFO L87 Difference]: Start difference. First operand 4997 states and 6265 transitions. Second operand 3 states. [2020-09-25 11:11:09,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:09,212 INFO L93 Difference]: Finished difference Result 12146 states and 15339 transitions. [2020-09-25 11:11:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:11:09,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-09-25 11:11:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:09,228 INFO L225 Difference]: With dead ends: 12146 [2020-09-25 11:11:09,228 INFO L226 Difference]: Without dead ends: 7304 [2020-09-25 11:11:09,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:11:09,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7304 states. [2020-09-25 11:11:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7304 to 7302. [2020-09-25 11:11:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7302 states. [2020-09-25 11:11:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7302 states to 7302 states and 9153 transitions. [2020-09-25 11:11:09,420 INFO L78 Accepts]: Start accepts. Automaton has 7302 states and 9153 transitions. Word has length 264 [2020-09-25 11:11:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:09,421 INFO L479 AbstractCegarLoop]: Abstraction has 7302 states and 9153 transitions. [2020-09-25 11:11:09,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:11:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7302 states and 9153 transitions. [2020-09-25 11:11:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 11:11:09,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:09,426 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:09,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 11:11:09,427 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:09,427 INFO L82 PathProgramCache]: Analyzing trace with hash 86678817, now seen corresponding path program 1 times [2020-09-25 11:11:09,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:09,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471540637] [2020-09-25 11:11:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:09,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:09,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:09,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:10,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:12,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:12,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-25 11:11:12,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:11:12,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2604 [2020-09-25 11:11:12,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:12,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:11:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-09-25 11:11:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:11:12,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:11:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:12,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:12,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:11:12,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:12,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:11:12,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:12,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 11:11:12,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471540637] [2020-09-25 11:11:12,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:12,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:11:12,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031213487] [2020-09-25 11:11:12,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:11:12,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:12,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:11:12,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:11:12,145 INFO L87 Difference]: Start difference. First operand 7302 states and 9153 transitions. Second operand 3 states. [2020-09-25 11:11:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:12,497 INFO L93 Difference]: Finished difference Result 15327 states and 19390 transitions. [2020-09-25 11:11:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:11:12,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 268 [2020-09-25 11:11:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:12,514 INFO L225 Difference]: With dead ends: 15327 [2020-09-25 11:11:12,514 INFO L226 Difference]: Without dead ends: 8120 [2020-09-25 11:11:12,528 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 [2020-09-25 11:11:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8120 states. [2020-09-25 11:11:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8120 to 7488. [2020-09-25 11:11:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7488 states. [2020-09-25 11:11:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 9405 transitions. [2020-09-25 11:11:12,732 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 9405 transitions. Word has length 268 [2020-09-25 11:11:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:12,733 INFO L479 AbstractCegarLoop]: Abstraction has 7488 states and 9405 transitions. [2020-09-25 11:11:12,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:11:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 9405 transitions. [2020-09-25 11:11:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-09-25 11:11:12,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:12,743 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:12,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 11:11:12,744 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:12,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1455109633, now seen corresponding path program 1 times [2020-09-25 11:11:12,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:12,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114832365] [2020-09-25 11:11:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:12,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:12,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:12,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:13,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:13,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:17,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:17,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-09-25 11:11:17,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:11:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4787 [2020-09-25 11:11:17,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:17,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:11:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-09-25 11:11:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:11:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:11:17,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:17,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:17,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:11:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:11:17,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:17,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 11:11:17,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114832365] [2020-09-25 11:11:17,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:17,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:11:17,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334209838] [2020-09-25 11:11:17,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:11:17,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:17,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:11:17,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:11:17,719 INFO L87 Difference]: Start difference. First operand 7488 states and 9405 transitions. Second operand 4 states. [2020-09-25 11:11:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:18,386 INFO L93 Difference]: Finished difference Result 22592 states and 28777 transitions. [2020-09-25 11:11:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:11:18,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 276 [2020-09-25 11:11:18,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:18,420 INFO L225 Difference]: With dead ends: 22592 [2020-09-25 11:11:18,420 INFO L226 Difference]: Without dead ends: 14983 [2020-09-25 11:11:18,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:11:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14983 states. [2020-09-25 11:11:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14983 to 7710. [2020-09-25 11:11:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7710 states. [2020-09-25 11:11:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 9795 transitions. [2020-09-25 11:11:18,688 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 9795 transitions. Word has length 276 [2020-09-25 11:11:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:18,689 INFO L479 AbstractCegarLoop]: Abstraction has 7710 states and 9795 transitions. [2020-09-25 11:11:18,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:11:18,689 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 9795 transitions. [2020-09-25 11:11:18,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-09-25 11:11:18,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:18,701 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:18,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 11:11:18,701 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:18,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:18,701 INFO L82 PathProgramCache]: Analyzing trace with hash 985654239, now seen corresponding path program 1 times [2020-09-25 11:11:18,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:18,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196044476] [2020-09-25 11:11:18,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:19,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:20,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:20,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-09-25 11:11:20,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:11:20,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1466 [2020-09-25 11:11:20,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:20,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:20,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:11:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-09-25 11:11:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 11:11:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:11:20,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:20,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:20,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:20,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:11:20,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:20,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:11:20,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:20,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:20,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 111 proven. 23 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-09-25 11:11:20,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196044476] [2020-09-25 11:11:20,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:11:20,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:11:20,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716406820] [2020-09-25 11:11:20,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:11:20,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:20,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:11:20,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:11:20,381 INFO L87 Difference]: Start difference. First operand 7710 states and 9795 transitions. Second operand 5 states. [2020-09-25 11:11:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:21,324 INFO L93 Difference]: Finished difference Result 29213 states and 36850 transitions. [2020-09-25 11:11:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:11:21,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2020-09-25 11:11:21,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:21,375 INFO L225 Difference]: With dead ends: 29213 [2020-09-25 11:11:21,376 INFO L226 Difference]: Without dead ends: 21658 [2020-09-25 11:11:21,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:11:21,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21658 states. [2020-09-25 11:11:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21658 to 7710. [2020-09-25 11:11:21,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7710 states. [2020-09-25 11:11:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 9795 transitions. [2020-09-25 11:11:21,655 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 9795 transitions. Word has length 294 [2020-09-25 11:11:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:21,656 INFO L479 AbstractCegarLoop]: Abstraction has 7710 states and 9795 transitions. [2020-09-25 11:11:21,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:11:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 9795 transitions. [2020-09-25 11:11:21,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-25 11:11:21,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:21,664 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:21,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 11:11:21,665 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:21,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:21,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1948237809, now seen corresponding path program 1 times [2020-09-25 11:11:21,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:21,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719633764] [2020-09-25 11:11:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:21,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:21,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking...