/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=0.1 --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 10:03:17,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:03:17,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:03:17,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:03:17,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:03:17,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:03:17,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:03:17,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:03:17,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:03:17,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:03:17,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:03:17,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:03:17,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:03:17,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:03:17,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:03:17,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:03:17,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:03:17,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:03:17,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:03:17,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:03:17,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:03:17,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:03:17,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:03:17,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:03:17,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:03:17,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:03:17,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:03:17,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:03:17,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:03:17,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:03:17,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:03:17,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:03:17,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:03:17,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:03:17,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:03:17,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:03:17,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:03:17,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:03:17,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:03:17,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:03:17,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:03:17,776 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 10:03:17,803 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:03:17,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:03:17,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:03:17,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:03:17,805 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:03:17,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:03:17,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:03:17,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:03:17,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:03:17,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:03:17,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:03:17,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:03:17,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:03:17,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:03:17,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:03:17,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:03:17,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:03:17,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:03:17,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:03:17,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:03:17,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:03:17,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:03:17,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:03:17,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:03:17,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:03:17,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:03:17,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:03:17,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:03:17,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:03:17,812 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:03:18,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:03:18,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:03:18,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:03:18,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:03:18,302 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:03:18,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 10:03:18,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1d222629/88dead9fcf934d65a5dbe662c36a21b2/FLAG7498a74b9 [2020-09-25 10:03:19,006 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:03:19,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 10:03:19,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1d222629/88dead9fcf934d65a5dbe662c36a21b2/FLAG7498a74b9 [2020-09-25 10:03:19,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1d222629/88dead9fcf934d65a5dbe662c36a21b2 [2020-09-25 10:03:19,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:03:19,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:03:19,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:03:19,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:03:19,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:03:19,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:03:19" (1/1) ... [2020-09-25 10:03:19,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78523b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19, skipping insertion in model container [2020-09-25 10:03:19,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:03:19" (1/1) ... [2020-09-25 10:03:19,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:03:19,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:03:19,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:03:19,721 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:03:19,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:03:19,924 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:03:19,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19 WrapperNode [2020-09-25 10:03:19,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:03:19,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:03:19,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:03:19,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:03:19,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19" (1/1) ... [2020-09-25 10:03:19,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19" (1/1) ... [2020-09-25 10:03:19,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19" (1/1) ... [2020-09-25 10:03:19,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19" (1/1) ... [2020-09-25 10:03:19,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19" (1/1) ... [2020-09-25 10:03:19,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19" (1/1) ... [2020-09-25 10:03:19,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19" (1/1) ... [2020-09-25 10:03:19,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:03:19,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:03:19,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:03:19,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:03:19,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19" (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 10:03:20,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:03:20,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:03:20,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 10:03:20,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:03:20,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:03:20,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 10:03:20,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:03:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 10:03:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-25 10:03:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 10:03:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:03:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:03:20,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:03:20,283 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 10:03:21,237 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 10:03:21,239 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 10:03:21,273 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:03:21,274 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:03:21,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:03:21 BoogieIcfgContainer [2020-09-25 10:03:21,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:03:21,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:03:21,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:03:21,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:03:21,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:03:19" (1/3) ... [2020-09-25 10:03:21,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ce8252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:03:21, skipping insertion in model container [2020-09-25 10:03:21,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:19" (2/3) ... [2020-09-25 10:03:21,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ce8252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:03:21, skipping insertion in model container [2020-09-25 10:03:21,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:03:21" (3/3) ... [2020-09-25 10:03:21,303 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-25 10:03:21,315 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:03:21,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:03:21,360 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:03:21,404 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:03:21,405 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:03:21,405 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:03:21,405 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:03:21,405 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:03:21,405 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:03:21,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:03:21,406 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:03:21,459 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-25 10:03:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 10:03:21,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:21,482 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 10:03:21,482 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:21,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-25 10:03:21,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:21,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032287571] [2020-09-25 10:03:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:22,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:23,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:23,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:23,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 10:03:23,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:03:23,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-09-25 10:03:23,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:23,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:23,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:03:23,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:03:23,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 10:03:23,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:03:23,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:23,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:23,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:23,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:03:23,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:23,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:23,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:23,491 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 10:03:23,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032287571] [2020-09-25 10:03:23,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:23,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:03:23,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934831076] [2020-09-25 10:03:23,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:03:23,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:23,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:03:23,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:03:23,530 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 6 states. [2020-09-25 10:03:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:23,927 INFO L93 Difference]: Finished difference Result 845 states and 1110 transitions. [2020-09-25 10:03:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:03:23,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 10:03:23,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:23,952 INFO L225 Difference]: With dead ends: 845 [2020-09-25 10:03:23,952 INFO L226 Difference]: Without dead ends: 472 [2020-09-25 10:03:23,959 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 10:03:23,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-09-25 10:03:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 461. [2020-09-25 10:03:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-09-25 10:03:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 560 transitions. [2020-09-25 10:03:24,050 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 560 transitions. Word has length 161 [2020-09-25 10:03:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:24,051 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 560 transitions. [2020-09-25 10:03:24,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:03:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 560 transitions. [2020-09-25 10:03:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 10:03:24,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:24,056 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 10:03:24,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:03:24,056 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:24,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:24,057 INFO L82 PathProgramCache]: Analyzing trace with hash 508400321, now seen corresponding path program 1 times [2020-09-25 10:03:24,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:24,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909940080] [2020-09-25 10:03:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:25,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:25,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 10:03:25,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:03:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1153 [2020-09-25 10:03:25,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:25,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:03:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:03:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 10:03:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:25,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:25,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:25,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:25,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:25,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:25,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:03:25,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:25,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:25,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:25,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:25,414 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 10:03:25,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909940080] [2020-09-25 10:03:25,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:25,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:03:25,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693913228] [2020-09-25 10:03:25,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:03:25,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:25,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:03:25,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:03:25,418 INFO L87 Difference]: Start difference. First operand 461 states and 560 transitions. Second operand 7 states. [2020-09-25 10:03:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:25,889 INFO L93 Difference]: Finished difference Result 941 states and 1195 transitions. [2020-09-25 10:03:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:03:25,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-25 10:03:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:25,895 INFO L225 Difference]: With dead ends: 941 [2020-09-25 10:03:25,896 INFO L226 Difference]: Without dead ends: 607 [2020-09-25 10:03:25,899 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 10:03:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-09-25 10:03:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 570. [2020-09-25 10:03:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-09-25 10:03:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 691 transitions. [2020-09-25 10:03:25,928 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 691 transitions. Word has length 170 [2020-09-25 10:03:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:25,929 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 691 transitions. [2020-09-25 10:03:25,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:03:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 691 transitions. [2020-09-25 10:03:25,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 10:03:25,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:25,934 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 10:03:25,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:03:25,934 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:25,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:25,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2044458217, now seen corresponding path program 1 times [2020-09-25 10:03:25,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:25,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797226674] [2020-09-25 10:03:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:26,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:26,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:26,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 10:03:26,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:03:26,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-09-25 10:03:26,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:26,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 10:03:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:03:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:26,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:26,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:26,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:26,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:26,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:26,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:26,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:26,962 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 10:03:26,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797226674] [2020-09-25 10:03:26,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:26,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:26,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411397436] [2020-09-25 10:03:26,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:26,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:26,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:26,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:26,965 INFO L87 Difference]: Start difference. First operand 570 states and 691 transitions. Second operand 3 states. [2020-09-25 10:03:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:27,060 INFO L93 Difference]: Finished difference Result 1017 states and 1256 transitions. [2020-09-25 10:03:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:27,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2020-09-25 10:03:27,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:27,065 INFO L225 Difference]: With dead ends: 1017 [2020-09-25 10:03:27,065 INFO L226 Difference]: Without dead ends: 586 [2020-09-25 10:03:27,066 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 10:03:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-25 10:03:27,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2020-09-25 10:03:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-09-25 10:03:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 707 transitions. [2020-09-25 10:03:27,087 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 707 transitions. Word has length 186 [2020-09-25 10:03:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:27,088 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 707 transitions. [2020-09-25 10:03:27,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 707 transitions. [2020-09-25 10:03:27,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 10:03:27,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:27,092 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 10:03:27,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:03:27,093 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:27,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:27,093 INFO L82 PathProgramCache]: Analyzing trace with hash 570616873, now seen corresponding path program 1 times [2020-09-25 10:03:27,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:27,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441897150] [2020-09-25 10:03:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:27,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:27,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:27,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:27,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 10:03:27,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:03:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-09-25 10:03:27,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:27,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:03:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 10:03:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:03:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:27,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:27,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:27,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:27,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:27,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:27,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:27,760 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 10:03:27,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441897150] [2020-09-25 10:03:27,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:03:27,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 10:03:27,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717447909] [2020-09-25 10:03:27,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:03:27,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:27,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:03:27,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:03:27,764 INFO L87 Difference]: Start difference. First operand 586 states and 707 transitions. Second operand 4 states. [2020-09-25 10:03:28,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:28,032 INFO L93 Difference]: Finished difference Result 1237 states and 1555 transitions. [2020-09-25 10:03:28,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:03:28,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-09-25 10:03:28,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:28,038 INFO L225 Difference]: With dead ends: 1237 [2020-09-25 10:03:28,038 INFO L226 Difference]: Without dead ends: 794 [2020-09-25 10:03:28,039 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 10:03:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2020-09-25 10:03:28,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 696. [2020-09-25 10:03:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 10:03:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 849 transitions. [2020-09-25 10:03:28,062 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 849 transitions. Word has length 187 [2020-09-25 10:03:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:28,063 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 849 transitions. [2020-09-25 10:03:28,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:03:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 849 transitions. [2020-09-25 10:03:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 10:03:28,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:28,067 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 10:03:28,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:03:28,067 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1436054601, now seen corresponding path program 1 times [2020-09-25 10:03:28,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:28,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910533411] [2020-09-25 10:03:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:28,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:28,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:29,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:29,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 10:03:29,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:03:29,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-09-25 10:03:29,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:29,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:03:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 10:03:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:03:29,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:29,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:29,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:29,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:29,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:29,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:29,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:29,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:29,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:29,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:29,251 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 10:03:29,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910533411] [2020-09-25 10:03:29,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:03:29,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:03:29,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69799735] [2020-09-25 10:03:29,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:03:29,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:29,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:03:29,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:03:29,254 INFO L87 Difference]: Start difference. First operand 696 states and 849 transitions. Second operand 5 states. [2020-09-25 10:03:29,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:29,826 INFO L93 Difference]: Finished difference Result 1991 states and 2520 transitions. [2020-09-25 10:03:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:03:29,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-09-25 10:03:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:29,838 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 10:03:29,839 INFO L226 Difference]: Without dead ends: 1420 [2020-09-25 10:03:29,842 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 10:03:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-09-25 10:03:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 752. [2020-09-25 10:03:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2020-09-25 10:03:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 918 transitions. [2020-09-25 10:03:29,888 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 918 transitions. Word has length 195 [2020-09-25 10:03:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:29,889 INFO L479 AbstractCegarLoop]: Abstraction has 752 states and 918 transitions. [2020-09-25 10:03:29,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:03:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 918 transitions. [2020-09-25 10:03:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 10:03:29,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:29,896 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 10:03:29,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:03:29,896 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:29,897 INFO L82 PathProgramCache]: Analyzing trace with hash 753761194, now seen corresponding path program 1 times [2020-09-25 10:03:29,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:29,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345370717] [2020-09-25 10:03:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:29,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:30,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:30,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:30,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:30,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:30,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 10:03:30,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:03:30,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-25 10:03:30,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:30,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 10:03:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:03:30,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:30,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:30,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:30,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:30,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:30,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:30,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:31,021 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 10:03:31,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345370717] [2020-09-25 10:03:31,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:31,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:31,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202327987] [2020-09-25 10:03:31,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:31,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:31,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:31,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:31,024 INFO L87 Difference]: Start difference. First operand 752 states and 918 transitions. Second operand 3 states. [2020-09-25 10:03:31,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:31,129 INFO L93 Difference]: Finished difference Result 1416 states and 1757 transitions. [2020-09-25 10:03:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:31,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-09-25 10:03:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:31,135 INFO L225 Difference]: With dead ends: 1416 [2020-09-25 10:03:31,135 INFO L226 Difference]: Without dead ends: 819 [2020-09-25 10:03:31,137 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 10:03:31,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-09-25 10:03:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2020-09-25 10:03:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-09-25 10:03:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 997 transitions. [2020-09-25 10:03:31,162 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 997 transitions. Word has length 214 [2020-09-25 10:03:31,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:31,163 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 997 transitions. [2020-09-25 10:03:31,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:31,163 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 997 transitions. [2020-09-25 10:03:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 10:03:31,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:31,166 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 10:03:31,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:03:31,167 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:31,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1004366699, now seen corresponding path program 1 times [2020-09-25 10:03:31,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:31,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729833233] [2020-09-25 10:03:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:31,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:31,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:31,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 10:03:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:03:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-09-25 10:03:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:31,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:03:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 10:03:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:03:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:31,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:31,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:31,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:31,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:31,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:31,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:31,903 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 10:03:31,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729833233] [2020-09-25 10:03:31,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:03:31,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 10:03:31,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876725821] [2020-09-25 10:03:31,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:03:31,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:31,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:03:31,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:03:31,906 INFO L87 Difference]: Start difference. First operand 819 states and 997 transitions. Second operand 4 states. [2020-09-25 10:03:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:32,178 INFO L93 Difference]: Finished difference Result 1775 states and 2225 transitions. [2020-09-25 10:03:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:03:32,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2020-09-25 10:03:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:32,185 INFO L225 Difference]: With dead ends: 1775 [2020-09-25 10:03:32,185 INFO L226 Difference]: Without dead ends: 1034 [2020-09-25 10:03:32,187 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 10:03:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-09-25 10:03:32,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 985. [2020-09-25 10:03:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-25 10:03:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1205 transitions. [2020-09-25 10:03:32,220 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1205 transitions. Word has length 215 [2020-09-25 10:03:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:32,220 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1205 transitions. [2020-09-25 10:03:32,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:03:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1205 transitions. [2020-09-25 10:03:32,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 10:03:32,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:32,224 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 10:03:32,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:03:32,225 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:32,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:32,225 INFO L82 PathProgramCache]: Analyzing trace with hash -700807115, now seen corresponding path program 1 times [2020-09-25 10:03:32,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:32,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513381588] [2020-09-25 10:03:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:32,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:32,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:32,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 10:03:32,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:03:32,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-09-25 10:03:32,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:32,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:03:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 10:03:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:03:32,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:32,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:32,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:32,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:32,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:32,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:32,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:32,914 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 10:03:32,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513381588] [2020-09-25 10:03:32,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:03:32,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 10:03:32,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165776681] [2020-09-25 10:03:32,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:03:32,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:32,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:03:32,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:03:32,917 INFO L87 Difference]: Start difference. First operand 985 states and 1205 transitions. Second operand 4 states. [2020-09-25 10:03:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:33,234 INFO L93 Difference]: Finished difference Result 2235 states and 2790 transitions. [2020-09-25 10:03:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:03:33,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2020-09-25 10:03:33,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:33,246 INFO L225 Difference]: With dead ends: 2235 [2020-09-25 10:03:33,247 INFO L226 Difference]: Without dead ends: 1356 [2020-09-25 10:03:33,249 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 10:03:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2020-09-25 10:03:33,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1084. [2020-09-25 10:03:33,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-09-25 10:03:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1337 transitions. [2020-09-25 10:03:33,292 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1337 transitions. Word has length 215 [2020-09-25 10:03:33,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:33,293 INFO L479 AbstractCegarLoop]: Abstraction has 1084 states and 1337 transitions. [2020-09-25 10:03:33,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:03:33,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1337 transitions. [2020-09-25 10:03:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 10:03:33,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:33,298 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 10:03:33,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:03:33,299 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:33,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:33,299 INFO L82 PathProgramCache]: Analyzing trace with hash -563154763, now seen corresponding path program 1 times [2020-09-25 10:03:33,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:33,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362959367] [2020-09-25 10:03:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:33,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:33,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:34,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:34,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 10:03:34,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:03:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-09-25 10:03:34,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:34,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:03:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 10:03:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:03:34,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:34,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:34,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:34,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:34,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:34,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:34,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:34,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:34,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:34,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:34,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:34,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:34,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:34,344 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 10:03:34,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362959367] [2020-09-25 10:03:34,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:03:34,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:03:34,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491050021] [2020-09-25 10:03:34,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:03:34,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:34,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:03:34,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:03:34,347 INFO L87 Difference]: Start difference. First operand 1084 states and 1337 transitions. Second operand 5 states. [2020-09-25 10:03:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:34,998 INFO L93 Difference]: Finished difference Result 3913 states and 4958 transitions. [2020-09-25 10:03:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:03:34,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-09-25 10:03:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:35,012 INFO L225 Difference]: With dead ends: 3913 [2020-09-25 10:03:35,012 INFO L226 Difference]: Without dead ends: 2984 [2020-09-25 10:03:35,015 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 10:03:35,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-09-25 10:03:35,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1371. [2020-09-25 10:03:35,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2020-09-25 10:03:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1718 transitions. [2020-09-25 10:03:35,086 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1718 transitions. Word has length 223 [2020-09-25 10:03:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:35,087 INFO L479 AbstractCegarLoop]: Abstraction has 1371 states and 1718 transitions. [2020-09-25 10:03:35,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:03:35,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1718 transitions. [2020-09-25 10:03:35,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 10:03:35,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:35,092 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 10:03:35,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:03:35,092 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:35,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:35,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1647539560, now seen corresponding path program 1 times [2020-09-25 10:03:35,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:35,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418094693] [2020-09-25 10:03:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:35,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:35,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:35,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:35,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 10:03:35,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:03:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-25 10:03:35,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:35,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 10:03:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:03:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:35,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:35,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:35,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:35,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:35,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:03:35,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:35,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:35,639 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 10:03:35,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418094693] [2020-09-25 10:03:35,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:35,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:35,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764111722] [2020-09-25 10:03:35,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:35,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:35,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:35,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:35,641 INFO L87 Difference]: Start difference. First operand 1371 states and 1718 transitions. Second operand 3 states. [2020-09-25 10:03:35,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:35,836 INFO L93 Difference]: Finished difference Result 3685 states and 4706 transitions. [2020-09-25 10:03:35,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:35,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2020-09-25 10:03:35,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:35,848 INFO L225 Difference]: With dead ends: 3685 [2020-09-25 10:03:35,848 INFO L226 Difference]: Without dead ends: 2469 [2020-09-25 10:03:35,852 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 10:03:35,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-09-25 10:03:35,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2020-09-25 10:03:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2020-09-25 10:03:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3103 transitions. [2020-09-25 10:03:35,929 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3103 transitions. Word has length 238 [2020-09-25 10:03:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:35,930 INFO L479 AbstractCegarLoop]: Abstraction has 2467 states and 3103 transitions. [2020-09-25 10:03:35,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:35,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3103 transitions. [2020-09-25 10:03:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 10:03:35,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:35,936 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 10:03:35,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:03:35,936 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:35,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:35,936 INFO L82 PathProgramCache]: Analyzing trace with hash 214992874, now seen corresponding path program 1 times [2020-09-25 10:03:35,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:35,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027116252] [2020-09-25 10:03:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:35,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 10:03:36,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:03:36,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-09-25 10:03:36,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 10:03:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:03:36,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:03:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:36,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:36,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:36,926 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 10:03:36,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027116252] [2020-09-25 10:03:36,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:36,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:36,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945684037] [2020-09-25 10:03:36,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:36,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:36,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:36,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:36,929 INFO L87 Difference]: Start difference. First operand 2467 states and 3103 transitions. Second operand 3 states. [2020-09-25 10:03:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:37,197 INFO L93 Difference]: Finished difference Result 5032 states and 6457 transitions. [2020-09-25 10:03:37,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:37,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2020-09-25 10:03:37,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:37,210 INFO L225 Difference]: With dead ends: 5032 [2020-09-25 10:03:37,210 INFO L226 Difference]: Without dead ends: 2624 [2020-09-25 10:03:37,215 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 10:03:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2020-09-25 10:03:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2511. [2020-09-25 10:03:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-09-25 10:03:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3155 transitions. [2020-09-25 10:03:37,288 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3155 transitions. Word has length 246 [2020-09-25 10:03:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:37,289 INFO L479 AbstractCegarLoop]: Abstraction has 2511 states and 3155 transitions. [2020-09-25 10:03:37,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3155 transitions. [2020-09-25 10:03:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 10:03:37,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:37,295 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 10:03:37,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:03:37,296 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:37,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1339093142, now seen corresponding path program 1 times [2020-09-25 10:03:37,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:37,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795607770] [2020-09-25 10:03:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:38,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:38,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 10:03:38,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:03:38,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-09-25 10:03:38,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:38,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:03:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 10:03:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:03:38,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:38,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:38,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:38,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:38,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:38,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:38,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:38,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:38,627 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 10:03:38,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795607770] [2020-09-25 10:03:38,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:38,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:03:38,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106215756] [2020-09-25 10:03:38,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:03:38,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:38,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:03:38,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:03:38,630 INFO L87 Difference]: Start difference. First operand 2511 states and 3155 transitions. Second operand 4 states. [2020-09-25 10:03:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:39,121 INFO L93 Difference]: Finished difference Result 7311 states and 9299 transitions. [2020-09-25 10:03:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:03:39,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 254 [2020-09-25 10:03:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:39,146 INFO L225 Difference]: With dead ends: 7311 [2020-09-25 10:03:39,147 INFO L226 Difference]: Without dead ends: 4955 [2020-09-25 10:03:39,153 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 10:03:39,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4955 states. [2020-09-25 10:03:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4955 to 2585. [2020-09-25 10:03:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2585 states. [2020-09-25 10:03:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3235 transitions. [2020-09-25 10:03:39,276 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3235 transitions. Word has length 254 [2020-09-25 10:03:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:39,277 INFO L479 AbstractCegarLoop]: Abstraction has 2585 states and 3235 transitions. [2020-09-25 10:03:39,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:03:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3235 transitions. [2020-09-25 10:03:39,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 10:03:39,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:39,293 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 10:03:39,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 10:03:39,294 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:39,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:39,294 INFO L82 PathProgramCache]: Analyzing trace with hash -527284278, now seen corresponding path program 1 times [2020-09-25 10:03:39,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:39,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569527908] [2020-09-25 10:03:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:39,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:40,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:40,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 10:03:40,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:03:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1328 [2020-09-25 10:03:40,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:40,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:03:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 10:03:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:03:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:40,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:40,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:40,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:40,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:40,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:40,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:40,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:40,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:40,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:40,789 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 10:03:40,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569527908] [2020-09-25 10:03:40,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:40,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:03:40,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242217615] [2020-09-25 10:03:40,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:03:40,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:40,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:03:40,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:03:40,794 INFO L87 Difference]: Start difference. First operand 2585 states and 3235 transitions. Second operand 4 states. [2020-09-25 10:03:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:41,451 INFO L93 Difference]: Finished difference Result 7597 states and 9705 transitions. [2020-09-25 10:03:41,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:03:41,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 254 [2020-09-25 10:03:41,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:41,475 INFO L225 Difference]: With dead ends: 7597 [2020-09-25 10:03:41,475 INFO L226 Difference]: Without dead ends: 5167 [2020-09-25 10:03:41,485 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 10:03:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states. [2020-09-25 10:03:41,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 2599. [2020-09-25 10:03:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2599 states. [2020-09-25 10:03:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 3249 transitions. [2020-09-25 10:03:41,588 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 3249 transitions. Word has length 254 [2020-09-25 10:03:41,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:41,588 INFO L479 AbstractCegarLoop]: Abstraction has 2599 states and 3249 transitions. [2020-09-25 10:03:41,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:03:41,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 3249 transitions. [2020-09-25 10:03:41,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-25 10:03:41,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:41,596 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 10:03:41,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 10:03:41,596 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:41,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:41,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1490807437, now seen corresponding path program 1 times [2020-09-25 10:03:41,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:41,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700932637] [2020-09-25 10:03:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:41,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:41,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:42,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:42,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:46,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:46,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 10:03:46,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:03:46,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:03:46,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:46,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:46,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 227 [2020-09-25 10:03:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 10:03:46,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:46,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:46,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:46,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:03:46,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:46,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:46,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:46,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:46,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:46,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:46,764 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 10:03:46,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700932637] [2020-09-25 10:03:46,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:46,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:46,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257306753] [2020-09-25 10:03:46,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:46,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:46,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:46,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:46,768 INFO L87 Difference]: Start difference. First operand 2599 states and 3249 transitions. Second operand 3 states. [2020-09-25 10:03:46,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:46,888 INFO L93 Difference]: Finished difference Result 7359 states and 9274 transitions. [2020-09-25 10:03:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:46,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2020-09-25 10:03:46,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:46,924 INFO L225 Difference]: With dead ends: 7359 [2020-09-25 10:03:46,925 INFO L226 Difference]: Without dead ends: 4915 [2020-09-25 10:03:46,931 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 10:03:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2020-09-25 10:03:47,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 4913. [2020-09-25 10:03:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4913 states. [2020-09-25 10:03:47,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4913 states to 4913 states and 6177 transitions. [2020-09-25 10:03:47,086 INFO L78 Accepts]: Start accepts. Automaton has 4913 states and 6177 transitions. Word has length 258 [2020-09-25 10:03:47,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:47,087 INFO L479 AbstractCegarLoop]: Abstraction has 4913 states and 6177 transitions. [2020-09-25 10:03:47,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:47,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4913 states and 6177 transitions. [2020-09-25 10:03:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 10:03:47,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:47,095 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 10:03:47,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 10:03:47,096 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:47,096 INFO L82 PathProgramCache]: Analyzing trace with hash 98858191, now seen corresponding path program 1 times [2020-09-25 10:03:47,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:47,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830381923] [2020-09-25 10:03:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:47,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:47,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:47,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:47,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:50,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:50,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 10:03:50,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:03:50,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3226 [2020-09-25 10:03:50,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:50,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:03:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 10:03:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:03:50,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:50,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:50,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:50,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:50,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:50,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:50,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:50,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:50,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:50,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:50,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:50,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:03:50,440 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 10:03:50,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830381923] [2020-09-25 10:03:50,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:50,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:03:50,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137533877] [2020-09-25 10:03:50,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:03:50,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:50,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:03:50,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:03:50,442 INFO L87 Difference]: Start difference. First operand 4913 states and 6177 transitions. Second operand 4 states. [2020-09-25 10:03:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:50,935 INFO L93 Difference]: Finished difference Result 14689 states and 18517 transitions. [2020-09-25 10:03:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:03:50,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2020-09-25 10:03:50,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:50,957 INFO L225 Difference]: With dead ends: 14689 [2020-09-25 10:03:50,957 INFO L226 Difference]: Without dead ends: 9931 [2020-09-25 10:03:50,970 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 10:03:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9931 states. [2020-09-25 10:03:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9931 to 4997. [2020-09-25 10:03:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4997 states. [2020-09-25 10:03:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 6265 transitions. [2020-09-25 10:03:51,135 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 6265 transitions. Word has length 261 [2020-09-25 10:03:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:51,136 INFO L479 AbstractCegarLoop]: Abstraction has 4997 states and 6265 transitions. [2020-09-25 10:03:51,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:03:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 6265 transitions. [2020-09-25 10:03:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 10:03:51,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:51,143 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 10:03:51,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 10:03:51,144 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:51,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:51,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1830826787, now seen corresponding path program 1 times [2020-09-25 10:03:51,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:51,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350796363] [2020-09-25 10:03:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:51,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:51,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:51,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 10:03:51,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:03:51,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-25 10:03:51,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:51,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-09-25 10:03:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:03:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:03:51,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:51,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:51,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:51,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:51,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:03:51,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:51,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:51,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:51,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:51,809 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 10:03:51,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350796363] [2020-09-25 10:03:51,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:51,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:51,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271008376] [2020-09-25 10:03:51,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:51,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:51,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:51,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:51,814 INFO L87 Difference]: Start difference. First operand 4997 states and 6265 transitions. Second operand 3 states. [2020-09-25 10:03:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:52,084 INFO L93 Difference]: Finished difference Result 12146 states and 15339 transitions. [2020-09-25 10:03:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:52,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-09-25 10:03:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:52,102 INFO L225 Difference]: With dead ends: 12146 [2020-09-25 10:03:52,103 INFO L226 Difference]: Without dead ends: 7304 [2020-09-25 10:03:52,113 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 10:03:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7304 states. [2020-09-25 10:03:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7304 to 7302. [2020-09-25 10:03:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7302 states. [2020-09-25 10:03:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7302 states to 7302 states and 9153 transitions. [2020-09-25 10:03:52,293 INFO L78 Accepts]: Start accepts. Automaton has 7302 states and 9153 transitions. Word has length 264 [2020-09-25 10:03:52,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:52,294 INFO L479 AbstractCegarLoop]: Abstraction has 7302 states and 9153 transitions. [2020-09-25 10:03:52,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 7302 states and 9153 transitions. [2020-09-25 10:03:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 10:03:52,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:52,299 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 10:03:52,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 10:03:52,300 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:52,300 INFO L82 PathProgramCache]: Analyzing trace with hash 86678817, now seen corresponding path program 1 times [2020-09-25 10:03:52,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:52,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669030363] [2020-09-25 10:03:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:52,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:52,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:52,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:54,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:54,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-25 10:03:54,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:03:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2653 [2020-09-25 10:03:54,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:54,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-09-25 10:03:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:03:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:03:55,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:55,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:55,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:55,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:03:55,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:55,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:55,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:55,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:55,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:55,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:03:55,053 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 10:03:55,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669030363] [2020-09-25 10:03:55,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:55,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:55,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59297110] [2020-09-25 10:03:55,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:55,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:55,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:55,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:55,055 INFO L87 Difference]: Start difference. First operand 7302 states and 9153 transitions. Second operand 3 states. [2020-09-25 10:03:55,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:55,415 INFO L93 Difference]: Finished difference Result 15327 states and 19390 transitions. [2020-09-25 10:03:55,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:55,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 268 [2020-09-25 10:03:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:55,432 INFO L225 Difference]: With dead ends: 15327 [2020-09-25 10:03:55,433 INFO L226 Difference]: Without dead ends: 8120 [2020-09-25 10:03:55,446 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 10:03:55,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8120 states. [2020-09-25 10:03:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8120 to 7488. [2020-09-25 10:03:55,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7488 states. [2020-09-25 10:03:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 9405 transitions. [2020-09-25 10:03:55,631 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 9405 transitions. Word has length 268 [2020-09-25 10:03:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:55,631 INFO L479 AbstractCegarLoop]: Abstraction has 7488 states and 9405 transitions. [2020-09-25 10:03:55,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 9405 transitions. [2020-09-25 10:03:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-09-25 10:03:55,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:55,643 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 10:03:55,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 10:03:55,644 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:55,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:55,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1455109633, now seen corresponding path program 1 times [2020-09-25 10:03:55,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:55,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195181217] [2020-09-25 10:03:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:55,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:55,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:55,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:56,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:00,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:00,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-09-25 10:04:00,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:04:00,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:04:00,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:00,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:00,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:00,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-09-25 10:04:00,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:04:00,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:04:00,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:00,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:00,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:00,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:04:00,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:04:00,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:00,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:00,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:00,837 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 10:04:00,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195181217] [2020-09-25 10:04:00,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:04:00,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:04:00,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103122969] [2020-09-25 10:04:00,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:04:00,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:00,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:04:00,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:04:00,839 INFO L87 Difference]: Start difference. First operand 7488 states and 9405 transitions. Second operand 4 states. [2020-09-25 10:04:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:01,512 INFO L93 Difference]: Finished difference Result 22592 states and 28777 transitions. [2020-09-25 10:04:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:04:01,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 276 [2020-09-25 10:04:01,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:01,541 INFO L225 Difference]: With dead ends: 22592 [2020-09-25 10:04:01,541 INFO L226 Difference]: Without dead ends: 14983 [2020-09-25 10:04:01,559 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 10:04:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14983 states. [2020-09-25 10:04:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14983 to 7710. [2020-09-25 10:04:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7710 states. [2020-09-25 10:04:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 9795 transitions. [2020-09-25 10:04:01,825 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 9795 transitions. Word has length 276 [2020-09-25 10:04:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:01,825 INFO L479 AbstractCegarLoop]: Abstraction has 7710 states and 9795 transitions. [2020-09-25 10:04:01,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:04:01,826 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 9795 transitions. [2020-09-25 10:04:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-09-25 10:04:01,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:01,836 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 10:04:01,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 10:04:01,836 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:01,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:01,837 INFO L82 PathProgramCache]: Analyzing trace with hash 985654239, now seen corresponding path program 1 times [2020-09-25 10:04:01,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:01,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233553655] [2020-09-25 10:04:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:01,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:03,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:03,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-09-25 10:04:03,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:04:03,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-09-25 10:04:03,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:03,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-09-25 10:04:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 10:04:03,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:04:03,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:03,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:04:03,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:04:03,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:03,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:04:03,619 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 10:04:03,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233553655] [2020-09-25 10:04:03,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:04:03,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:04:03,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716057533] [2020-09-25 10:04:03,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:04:03,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:03,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:04:03,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:04:03,622 INFO L87 Difference]: Start difference. First operand 7710 states and 9795 transitions. Second operand 5 states. [2020-09-25 10:04:04,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:04,598 INFO L93 Difference]: Finished difference Result 29213 states and 36850 transitions. [2020-09-25 10:04:04,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:04:04,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2020-09-25 10:04:04,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:04,642 INFO L225 Difference]: With dead ends: 29213 [2020-09-25 10:04:04,642 INFO L226 Difference]: Without dead ends: 21658 [2020-09-25 10:04:04,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 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 10:04:04,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21658 states. [2020-09-25 10:04:04,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21658 to 7710. [2020-09-25 10:04:04,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7710 states. [2020-09-25 10:04:04,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 9795 transitions. [2020-09-25 10:04:04,970 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 9795 transitions. Word has length 294 [2020-09-25 10:04:04,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:04,971 INFO L479 AbstractCegarLoop]: Abstraction has 7710 states and 9795 transitions. [2020-09-25 10:04:04,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:04:04,971 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 9795 transitions. [2020-09-25 10:04:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-25 10:04:04,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:04,983 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 10:04:04,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 10:04:04,983 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:04,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:04,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1948237809, now seen corresponding path program 1 times [2020-09-25 10:04:04,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:04,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628479065] [2020-09-25 10:04:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:05,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking...