/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.08.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:34:41,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:34:41,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:34:41,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:34:41,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:34:41,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:34:41,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:34:41,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:34:41,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:34:41,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:34:41,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:34:41,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:34:41,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:34:41,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:34:41,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:34:41,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:34:41,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:34:41,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:34:41,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:34:41,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:34:41,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:34:41,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:34:41,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:34:41,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:34:41,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:34:41,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:34:41,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:34:41,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:34:41,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:34:41,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:34:41,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:34:41,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:34:41,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:34:41,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:34:41,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:34:41,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:34:41,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:34:41,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:34:41,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:34:41,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:34:41,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:34:41,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 15:34:41,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:34:41,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:34:41,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:34:41,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:34:41,359 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:34:41,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:34:41,360 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:34:41,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:34:41,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:34:41,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:34:41,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:34:41,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:34:41,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:34:41,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:34:41,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:34:41,363 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:34:41,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:34:41,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:34:41,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:34:41,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:34:41,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:34:41,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:34:41,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:34:41,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:34:41,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:34:41,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:34:41,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:34:41,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:34:41,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:34:41,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:34:41,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:34:41,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:34:41,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:34:41,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:34:41,704 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:34:41,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.08.i.cil-2.c [2020-10-13 15:34:41,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98759a7cf/0841f18ee22a4f69a3458b5edfefe193/FLAG6b5e63c81 [2020-10-13 15:34:42,436 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:34:42,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.08.i.cil-2.c [2020-10-13 15:34:42,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98759a7cf/0841f18ee22a4f69a3458b5edfefe193/FLAG6b5e63c81 [2020-10-13 15:34:42,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98759a7cf/0841f18ee22a4f69a3458b5edfefe193 [2020-10-13 15:34:42,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:34:42,610 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:34:42,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:34:42,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:34:42,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:34:42,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:34:42" (1/1) ... [2020-10-13 15:34:42,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6340f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:42, skipping insertion in model container [2020-10-13 15:34:42,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:34:42" (1/1) ... [2020-10-13 15:34:42,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:34:42,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:34:43,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:34:43,321 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:34:43,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:34:43,523 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:34:43,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:43 WrapperNode [2020-10-13 15:34:43,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:34:43,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:34:43,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:34:43,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:34:43,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:43" (1/1) ... [2020-10-13 15:34:43,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:43" (1/1) ... [2020-10-13 15:34:43,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:43" (1/1) ... [2020-10-13 15:34:43,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:43" (1/1) ... [2020-10-13 15:34:43,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:43" (1/1) ... [2020-10-13 15:34:43,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:43" (1/1) ... [2020-10-13 15:34:43,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:43" (1/1) ... [2020-10-13 15:34:43,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:34:43,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:34:43,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:34:43,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:34:43,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:34:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:34:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:34:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:34:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:34:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:34:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:34:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:34:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:34:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:34:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:34:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:34:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:34:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:34:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:34:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:34:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:34:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:34:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:34:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:34:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:34:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:34:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:34:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:34:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:34:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:34:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:34:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:34:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:34:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:34:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:34:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:34:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:34:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:34:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:34:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:34:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:34:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:34:44,300 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:34:45,013 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:34:45,014 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:34:45,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:34:45,038 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:34:45,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:34:45 BoogieIcfgContainer [2020-10-13 15:34:45,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:34:45,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:34:45,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:34:45,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:34:45,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:34:42" (1/3) ... [2020-10-13 15:34:45,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edc1cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:34:45, skipping insertion in model container [2020-10-13 15:34:45,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:43" (2/3) ... [2020-10-13 15:34:45,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edc1cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:34:45, skipping insertion in model container [2020-10-13 15:34:45,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:34:45" (3/3) ... [2020-10-13 15:34:45,052 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.08.i.cil-2.c [2020-10-13 15:34:45,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:34:45,071 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:34:45,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:34:45,110 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:34:45,110 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:34:45,111 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:34:45,111 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:34:45,111 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:34:45,111 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:34:45,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:34:45,111 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:34:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-13 15:34:45,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 15:34:45,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:45,145 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] [2020-10-13 15:34:45,146 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:45,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1030527308, now seen corresponding path program 1 times [2020-10-13 15:34:45,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:45,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813154001] [2020-10-13 15:34:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:46,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 15:34:46,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:34:46,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-13 15:34:46,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:34:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:34:46,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:34:46,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:46,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:46,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:46,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:46,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:34:46,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:46,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813154001] [2020-10-13 15:34:46,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:46,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:46,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093772612] [2020-10-13 15:34:46,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:46,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:46,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:46,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:46,395 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 5 states. [2020-10-13 15:34:47,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:47,316 INFO L93 Difference]: Finished difference Result 333 states and 558 transitions. [2020-10-13 15:34:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:47,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 15:34:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:47,332 INFO L225 Difference]: With dead ends: 333 [2020-10-13 15:34:47,332 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:34:47,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:34:47,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:34:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:34:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:34:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 232 transitions. [2020-10-13 15:34:47,395 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 232 transitions. Word has length 48 [2020-10-13 15:34:47,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:47,395 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 232 transitions. [2020-10-13 15:34:47,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:47,396 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 232 transitions. [2020-10-13 15:34:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 15:34:47,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:47,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:47,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:34:47,399 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:47,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:47,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1283890321, now seen corresponding path program 1 times [2020-10-13 15:34:47,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:47,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114160183] [2020-10-13 15:34:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:47,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:48,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:48,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 15:34:48,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:48,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-13 15:34:48,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:48,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:48,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:34:48,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:34:48,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:48,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:48,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:48,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:48,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:48,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:34:48,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:48,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:48,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:48,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114160183] [2020-10-13 15:34:48,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:48,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:48,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159444174] [2020-10-13 15:34:48,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:48,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:48,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:48,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:48,632 INFO L87 Difference]: Start difference. First operand 152 states and 232 transitions. Second operand 5 states. [2020-10-13 15:34:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:49,323 INFO L93 Difference]: Finished difference Result 296 states and 449 transitions. [2020-10-13 15:34:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:49,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-13 15:34:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:49,326 INFO L225 Difference]: With dead ends: 296 [2020-10-13 15:34:49,327 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:34:49,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:34:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:34:49,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:34:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:34:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2020-10-13 15:34:49,343 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 61 [2020-10-13 15:34:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:49,343 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2020-10-13 15:34:49,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2020-10-13 15:34:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 15:34:49,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:49,347 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:34:49,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:34:49,347 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:49,348 INFO L82 PathProgramCache]: Analyzing trace with hash -634407279, now seen corresponding path program 1 times [2020-10-13 15:34:49,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:49,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289017262] [2020-10-13 15:34:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:54,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:54,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:34:54,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:34:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:34:54,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:34:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:34:54,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:54,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:54,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:54,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:54,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:34:54,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:54,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289017262] [2020-10-13 15:34:54,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:54,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:54,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872322035] [2020-10-13 15:34:54,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:54,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:54,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:54,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:54,554 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand 5 states. [2020-10-13 15:34:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:55,229 INFO L93 Difference]: Finished difference Result 295 states and 447 transitions. [2020-10-13 15:34:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:55,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-13 15:34:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:55,232 INFO L225 Difference]: With dead ends: 295 [2020-10-13 15:34:55,232 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 15:34:55,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:34:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 15:34:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2020-10-13 15:34:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:34:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2020-10-13 15:34:55,258 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 62 [2020-10-13 15:34:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:55,258 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2020-10-13 15:34:55,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2020-10-13 15:34:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 15:34:55,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:55,267 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:34:55,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:34:55,269 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:55,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:55,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1681918083, now seen corresponding path program 1 times [2020-10-13 15:34:55,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:55,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108488293] [2020-10-13 15:34:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:59,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:00,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:00,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:35:00,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:35:00,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:35:00,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:35:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:35:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:00,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:00,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:00,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:00,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:00,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:00,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:00,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108488293] [2020-10-13 15:35:00,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:00,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:35:00,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48930224] [2020-10-13 15:35:00,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:35:00,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:00,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:35:00,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:00,525 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 6 states. [2020-10-13 15:35:01,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:01,455 INFO L93 Difference]: Finished difference Result 396 states and 608 transitions. [2020-10-13 15:35:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:35:01,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-13 15:35:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:01,460 INFO L225 Difference]: With dead ends: 396 [2020-10-13 15:35:01,461 INFO L226 Difference]: Without dead ends: 269 [2020-10-13 15:35:01,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:35:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-13 15:35:01,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 177. [2020-10-13 15:35:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-13 15:35:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 267 transitions. [2020-10-13 15:35:01,488 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 267 transitions. Word has length 62 [2020-10-13 15:35:01,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:01,489 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 267 transitions. [2020-10-13 15:35:01,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:35:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 267 transitions. [2020-10-13 15:35:01,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 15:35:01,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:01,491 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:01,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:35:01,491 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:01,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:01,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1259130264, now seen corresponding path program 1 times [2020-10-13 15:35:01,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:01,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461716984] [2020-10-13 15:35:01,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:02,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:35:02,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:02,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-13 15:35:02,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:35:02,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:02,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:02,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:02,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:02,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:02,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:02,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:02,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:02,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461716984] [2020-10-13 15:35:02,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:02,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:02,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175190272] [2020-10-13 15:35:02,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:02,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:02,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:02,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:02,284 INFO L87 Difference]: Start difference. First operand 177 states and 267 transitions. Second operand 5 states. [2020-10-13 15:35:02,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:02,883 INFO L93 Difference]: Finished difference Result 343 states and 517 transitions. [2020-10-13 15:35:02,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:02,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-13 15:35:02,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:02,886 INFO L225 Difference]: With dead ends: 343 [2020-10-13 15:35:02,886 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:35:02,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:02,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:35:02,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 177. [2020-10-13 15:35:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-13 15:35:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 266 transitions. [2020-10-13 15:35:02,899 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 266 transitions. Word has length 62 [2020-10-13 15:35:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:02,899 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 266 transitions. [2020-10-13 15:35:02,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 266 transitions. [2020-10-13 15:35:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 15:35:02,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:02,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:02,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:35:02,901 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:02,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:02,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1118403577, now seen corresponding path program 1 times [2020-10-13 15:35:02,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:02,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090304368] [2020-10-13 15:35:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:02,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:03,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:35:03,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:03,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-13 15:35:03,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:35:03,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:03,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:03,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:03,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:03,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:03,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:03,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090304368] [2020-10-13 15:35:03,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:03,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:03,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626111292] [2020-10-13 15:35:03,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:03,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:03,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:03,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:03,318 INFO L87 Difference]: Start difference. First operand 177 states and 266 transitions. Second operand 5 states. [2020-10-13 15:35:03,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:03,915 INFO L93 Difference]: Finished difference Result 342 states and 515 transitions. [2020-10-13 15:35:03,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:03,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-13 15:35:03,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:03,916 INFO L225 Difference]: With dead ends: 342 [2020-10-13 15:35:03,917 INFO L226 Difference]: Without dead ends: 190 [2020-10-13 15:35:03,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-13 15:35:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2020-10-13 15:35:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-13 15:35:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 265 transitions. [2020-10-13 15:35:03,928 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 265 transitions. Word has length 62 [2020-10-13 15:35:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:03,928 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 265 transitions. [2020-10-13 15:35:03,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 265 transitions. [2020-10-13 15:35:03,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:35:03,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:03,929 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:35:03,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:35:03,930 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:03,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:03,930 INFO L82 PathProgramCache]: Analyzing trace with hash 771064118, now seen corresponding path program 1 times [2020-10-13 15:35:03,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:03,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48188418] [2020-10-13 15:35:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:06,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:08,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 15:35:08,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:08,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4508 [2020-10-13 15:35:08,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:35:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:08,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:08,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:08,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:08,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:08,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:08,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48188418] [2020-10-13 15:35:08,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:08,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:08,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138638532] [2020-10-13 15:35:08,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:08,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:08,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:08,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:08,520 INFO L87 Difference]: Start difference. First operand 177 states and 265 transitions. Second operand 5 states. [2020-10-13 15:35:09,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:09,092 INFO L93 Difference]: Finished difference Result 342 states and 514 transitions. [2020-10-13 15:35:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:09,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:35:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:09,095 INFO L225 Difference]: With dead ends: 342 [2020-10-13 15:35:09,095 INFO L226 Difference]: Without dead ends: 190 [2020-10-13 15:35:09,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:09,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-13 15:35:09,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2020-10-13 15:35:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-13 15:35:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 264 transitions. [2020-10-13 15:35:09,104 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 264 transitions. Word has length 63 [2020-10-13 15:35:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:09,104 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 264 transitions. [2020-10-13 15:35:09,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 264 transitions. [2020-10-13 15:35:09,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:35:09,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:09,105 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:35:09,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:35:09,106 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:09,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1077228557, now seen corresponding path program 1 times [2020-10-13 15:35:09,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:09,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888951777] [2020-10-13 15:35:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:09,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:11,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:13,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:13,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:35:13,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:13,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3884 [2020-10-13 15:35:13,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:13,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:35:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:13,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:13,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:13,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:13,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:13,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:35:13,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:13,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888951777] [2020-10-13 15:35:13,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:13,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:13,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360472110] [2020-10-13 15:35:13,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:13,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:13,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:13,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:13,110 INFO L87 Difference]: Start difference. First operand 177 states and 264 transitions. Second operand 5 states. [2020-10-13 15:35:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:13,926 INFO L93 Difference]: Finished difference Result 342 states and 513 transitions. [2020-10-13 15:35:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:13,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:35:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:13,933 INFO L225 Difference]: With dead ends: 342 [2020-10-13 15:35:13,933 INFO L226 Difference]: Without dead ends: 190 [2020-10-13 15:35:13,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-13 15:35:13,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2020-10-13 15:35:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-13 15:35:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 263 transitions. [2020-10-13 15:35:13,949 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 263 transitions. Word has length 64 [2020-10-13 15:35:13,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:13,949 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 263 transitions. [2020-10-13 15:35:13,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 263 transitions. [2020-10-13 15:35:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:35:13,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:13,958 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:35:13,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:35:13,958 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:13,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1051813029, now seen corresponding path program 1 times [2020-10-13 15:35:13,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:13,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526994858] [2020-10-13 15:35:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:14,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:15,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:17,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:17,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:35:17,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3658 [2020-10-13 15:35:17,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:35:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:17,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:17,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:17,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:17,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:17,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:17,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:17,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526994858] [2020-10-13 15:35:17,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:17,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:17,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808956199] [2020-10-13 15:35:17,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:17,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:17,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:17,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:17,742 INFO L87 Difference]: Start difference. First operand 177 states and 263 transitions. Second operand 5 states. [2020-10-13 15:35:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:18,389 INFO L93 Difference]: Finished difference Result 342 states and 512 transitions. [2020-10-13 15:35:18,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:18,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:35:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:18,392 INFO L225 Difference]: With dead ends: 342 [2020-10-13 15:35:18,392 INFO L226 Difference]: Without dead ends: 190 [2020-10-13 15:35:18,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-13 15:35:18,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2020-10-13 15:35:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-13 15:35:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 262 transitions. [2020-10-13 15:35:18,400 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 262 transitions. Word has length 65 [2020-10-13 15:35:18,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:18,400 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 262 transitions. [2020-10-13 15:35:18,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 262 transitions. [2020-10-13 15:35:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:35:18,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:18,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:18,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:35:18,402 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:18,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:18,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1234253850, now seen corresponding path program 1 times [2020-10-13 15:35:18,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:18,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143091213] [2020-10-13 15:35:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:18,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:18,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:18,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:18,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:35:18,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:18,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 15:35:18,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:35:18,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:18,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:18,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:18,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:18,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:18,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:18,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:18,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:18,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143091213] [2020-10-13 15:35:18,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:18,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:18,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107988961] [2020-10-13 15:35:18,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:18,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:18,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:18,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:18,634 INFO L87 Difference]: Start difference. First operand 177 states and 262 transitions. Second operand 5 states. [2020-10-13 15:35:19,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:19,307 INFO L93 Difference]: Finished difference Result 372 states and 560 transitions. [2020-10-13 15:35:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:19,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:35:19,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:19,309 INFO L225 Difference]: With dead ends: 372 [2020-10-13 15:35:19,309 INFO L226 Difference]: Without dead ends: 220 [2020-10-13 15:35:19,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:19,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-13 15:35:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 199. [2020-10-13 15:35:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 15:35:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 300 transitions. [2020-10-13 15:35:19,318 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 300 transitions. Word has length 65 [2020-10-13 15:35:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:19,318 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 300 transitions. [2020-10-13 15:35:19,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:19,318 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 300 transitions. [2020-10-13 15:35:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:35:19,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:19,320 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:35:19,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:35:19,320 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:19,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:19,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1362830062, now seen corresponding path program 1 times [2020-10-13 15:35:19,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:19,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161345165] [2020-10-13 15:35:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:20,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:22,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:35:22,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2668 [2020-10-13 15:35:22,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:35:22,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:22,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:22,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:22,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:22,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:22,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:22,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161345165] [2020-10-13 15:35:22,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:22,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:22,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253883988] [2020-10-13 15:35:22,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:22,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:22,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:22,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:22,056 INFO L87 Difference]: Start difference. First operand 199 states and 300 transitions. Second operand 5 states. [2020-10-13 15:35:22,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:22,594 INFO L93 Difference]: Finished difference Result 376 states and 575 transitions. [2020-10-13 15:35:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:22,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:35:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:22,596 INFO L225 Difference]: With dead ends: 376 [2020-10-13 15:35:22,597 INFO L226 Difference]: Without dead ends: 202 [2020-10-13 15:35:22,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-13 15:35:22,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2020-10-13 15:35:22,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 15:35:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 299 transitions. [2020-10-13 15:35:22,605 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 299 transitions. Word has length 66 [2020-10-13 15:35:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:22,605 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 299 transitions. [2020-10-13 15:35:22,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 299 transitions. [2020-10-13 15:35:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:35:22,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:22,607 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:35:22,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:35:22,607 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:22,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1110770557, now seen corresponding path program 1 times [2020-10-13 15:35:22,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:22,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146748789] [2020-10-13 15:35:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:22,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:23,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 15:35:23,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-13 15:35:23,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:35:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:23,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:23,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:23,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:23,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146748789] [2020-10-13 15:35:23,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:23,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:23,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937700726] [2020-10-13 15:35:23,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:23,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:23,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:23,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:23,162 INFO L87 Difference]: Start difference. First operand 199 states and 299 transitions. Second operand 5 states. [2020-10-13 15:35:23,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:23,745 INFO L93 Difference]: Finished difference Result 394 states and 596 transitions. [2020-10-13 15:35:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:23,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-13 15:35:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:23,748 INFO L225 Difference]: With dead ends: 394 [2020-10-13 15:35:23,749 INFO L226 Difference]: Without dead ends: 220 [2020-10-13 15:35:23,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:23,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-13 15:35:23,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 199. [2020-10-13 15:35:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 15:35:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 298 transitions. [2020-10-13 15:35:23,758 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 298 transitions. Word has length 78 [2020-10-13 15:35:23,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:23,758 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 298 transitions. [2020-10-13 15:35:23,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:23,759 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 298 transitions. [2020-10-13 15:35:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 15:35:23,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:23,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:23,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:35:23,760 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:23,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:23,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1815793846, now seen corresponding path program 1 times [2020-10-13 15:35:23,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:23,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58402761] [2020-10-13 15:35:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:24,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:24,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 15:35:24,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-13 15:35:24,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:35:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:24,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:24,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:24,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:24,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:24,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:24,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:24,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:24,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:24,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58402761] [2020-10-13 15:35:24,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:24,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:24,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231723196] [2020-10-13 15:35:24,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:24,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:24,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:24,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:24,277 INFO L87 Difference]: Start difference. First operand 199 states and 298 transitions. Second operand 5 states. [2020-10-13 15:35:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:24,865 INFO L93 Difference]: Finished difference Result 392 states and 592 transitions. [2020-10-13 15:35:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:24,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-13 15:35:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:24,868 INFO L225 Difference]: With dead ends: 392 [2020-10-13 15:35:24,868 INFO L226 Difference]: Without dead ends: 218 [2020-10-13 15:35:24,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:24,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-13 15:35:24,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 199. [2020-10-13 15:35:24,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 15:35:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 297 transitions. [2020-10-13 15:35:24,877 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 297 transitions. Word has length 79 [2020-10-13 15:35:24,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:24,878 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 297 transitions. [2020-10-13 15:35:24,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:24,878 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 297 transitions. [2020-10-13 15:35:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 15:35:24,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:24,879 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:35:24,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:35:24,879 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:24,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1956520533, now seen corresponding path program 1 times [2020-10-13 15:35:24,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:24,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243861508] [2020-10-13 15:35:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:24,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:25,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 15:35:25,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 15:35:25,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:35:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:25,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:25,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:25,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:25,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:25,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:25,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:25,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:25,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:25,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:25,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243861508] [2020-10-13 15:35:25,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:25,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:25,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897099712] [2020-10-13 15:35:25,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:25,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:25,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:25,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:25,154 INFO L87 Difference]: Start difference. First operand 199 states and 297 transitions. Second operand 5 states. [2020-10-13 15:35:25,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:25,738 INFO L93 Difference]: Finished difference Result 391 states and 589 transitions. [2020-10-13 15:35:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:25,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-13 15:35:25,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:25,740 INFO L225 Difference]: With dead ends: 391 [2020-10-13 15:35:25,740 INFO L226 Difference]: Without dead ends: 217 [2020-10-13 15:35:25,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:25,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-13 15:35:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 199. [2020-10-13 15:35:25,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 15:35:25,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 296 transitions. [2020-10-13 15:35:25,752 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 296 transitions. Word has length 79 [2020-10-13 15:35:25,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:25,752 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 296 transitions. [2020-10-13 15:35:25,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 296 transitions. [2020-10-13 15:35:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:35:25,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:25,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:25,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:35:25,754 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:25,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:25,755 INFO L82 PathProgramCache]: Analyzing trace with hash -282472428, now seen corresponding path program 1 times [2020-10-13 15:35:25,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:25,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170846092] [2020-10-13 15:35:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:30,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:35:30,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:35:30,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:35:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:30,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:30,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:30,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:30,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:30,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170846092] [2020-10-13 15:35:30,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:30,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:30,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709931851] [2020-10-13 15:35:30,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:30,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:30,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:30,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:30,830 INFO L87 Difference]: Start difference. First operand 199 states and 296 transitions. Second operand 5 states. [2020-10-13 15:35:31,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:31,381 INFO L93 Difference]: Finished difference Result 390 states and 586 transitions. [2020-10-13 15:35:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:31,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:35:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:31,385 INFO L225 Difference]: With dead ends: 390 [2020-10-13 15:35:31,385 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:35:31,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:31,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:35:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2020-10-13 15:35:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 15:35:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 295 transitions. [2020-10-13 15:35:31,393 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 295 transitions. Word has length 80 [2020-10-13 15:35:31,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:31,394 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 295 transitions. [2020-10-13 15:35:31,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:31,394 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 295 transitions. [2020-10-13 15:35:31,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:35:31,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:31,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:31,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:35:31,396 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:31,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1604431016, now seen corresponding path program 1 times [2020-10-13 15:35:31,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:31,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34191391] [2020-10-13 15:35:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:31,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:32,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:34,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:35,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:35,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:35:35,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:35,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4451 [2020-10-13 15:35:35,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:35:35,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:35,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:35,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:35,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:35,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:35,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:35,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:35,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34191391] [2020-10-13 15:35:35,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:35,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:35,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999332398] [2020-10-13 15:35:35,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:35,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:35,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:35,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:35,923 INFO L87 Difference]: Start difference. First operand 199 states and 295 transitions. Second operand 5 states. [2020-10-13 15:35:36,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:36,471 INFO L93 Difference]: Finished difference Result 390 states and 584 transitions. [2020-10-13 15:35:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:36,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:35:36,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:36,473 INFO L225 Difference]: With dead ends: 390 [2020-10-13 15:35:36,473 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:35:36,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:36,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:35:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2020-10-13 15:35:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 15:35:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 294 transitions. [2020-10-13 15:35:36,480 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 294 transitions. Word has length 80 [2020-10-13 15:35:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:36,481 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 294 transitions. [2020-10-13 15:35:36,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 294 transitions. [2020-10-13 15:35:36,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:35:36,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:36,482 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:36,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:35:36,482 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:36,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1141798619, now seen corresponding path program 1 times [2020-10-13 15:35:36,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:36,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267594056] [2020-10-13 15:35:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:40,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:35:40,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:40,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3543 [2020-10-13 15:35:40,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:40,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:40,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:40,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:40,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:40,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267594056] [2020-10-13 15:35:40,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:40,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:40,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105299830] [2020-10-13 15:35:40,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:40,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:40,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:40,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:40,119 INFO L87 Difference]: Start difference. First operand 199 states and 294 transitions. Second operand 5 states. [2020-10-13 15:35:40,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:40,681 INFO L93 Difference]: Finished difference Result 390 states and 582 transitions. [2020-10-13 15:35:40,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:40,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:35:40,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:40,684 INFO L225 Difference]: With dead ends: 390 [2020-10-13 15:35:40,684 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:35:40,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:35:40,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2020-10-13 15:35:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 15:35:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 293 transitions. [2020-10-13 15:35:40,692 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 293 transitions. Word has length 81 [2020-10-13 15:35:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:40,692 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 293 transitions. [2020-10-13 15:35:40,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 293 transitions. [2020-10-13 15:35:40,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:35:40,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:40,693 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-13 15:35:40,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:35:40,694 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:40,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:40,694 INFO L82 PathProgramCache]: Analyzing trace with hash 949858893, now seen corresponding path program 1 times [2020-10-13 15:35:40,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:40,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677887554] [2020-10-13 15:35:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:44,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:35:44,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3682 [2020-10-13 15:35:44,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:44,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:44,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:44,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:35:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:44,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:44,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:44,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:44,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:44,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:44,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:44,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677887554] [2020-10-13 15:35:44,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:44,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:44,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250314152] [2020-10-13 15:35:44,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:44,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:44,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:44,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:44,452 INFO L87 Difference]: Start difference. First operand 199 states and 293 transitions. Second operand 5 states. [2020-10-13 15:35:44,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:44,975 INFO L93 Difference]: Finished difference Result 390 states and 580 transitions. [2020-10-13 15:35:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:44,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:35:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:44,978 INFO L225 Difference]: With dead ends: 390 [2020-10-13 15:35:44,978 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:35:44,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:44,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:35:44,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2020-10-13 15:35:44,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 15:35:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 292 transitions. [2020-10-13 15:35:44,986 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 292 transitions. Word has length 82 [2020-10-13 15:35:44,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:44,987 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 292 transitions. [2020-10-13 15:35:44,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:44,987 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 292 transitions. [2020-10-13 15:35:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 15:35:44,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:44,988 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:35:44,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:35:44,989 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:44,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:44,989 INFO L82 PathProgramCache]: Analyzing trace with hash 559457376, now seen corresponding path program 1 times [2020-10-13 15:35:44,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:44,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117815594] [2020-10-13 15:35:44,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:48,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:48,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 15:35:48,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:48,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3796 [2020-10-13 15:35:48,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:35:48,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:48,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:48,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:48,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:48,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:48,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:48,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:48,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:48,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:48,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:48,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117815594] [2020-10-13 15:35:48,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:48,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:48,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475058899] [2020-10-13 15:35:48,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:48,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:48,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:48,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:48,856 INFO L87 Difference]: Start difference. First operand 199 states and 292 transitions. Second operand 5 states. [2020-10-13 15:35:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:49,363 INFO L93 Difference]: Finished difference Result 380 states and 566 transitions. [2020-10-13 15:35:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:49,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-13 15:35:49,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:49,365 INFO L225 Difference]: With dead ends: 380 [2020-10-13 15:35:49,365 INFO L226 Difference]: Without dead ends: 206 [2020-10-13 15:35:49,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:49,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-13 15:35:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 199. [2020-10-13 15:35:49,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 15:35:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 291 transitions. [2020-10-13 15:35:49,372 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 291 transitions. Word has length 83 [2020-10-13 15:35:49,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:49,373 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 291 transitions. [2020-10-13 15:35:49,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 291 transitions. [2020-10-13 15:35:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:35:49,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:49,374 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-13 15:35:49,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:35:49,374 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:49,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1181737734, now seen corresponding path program 1 times [2020-10-13 15:35:49,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:49,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478281964] [2020-10-13 15:35:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:49,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:49,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:35:49,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 15:35:49,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:35:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:49,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:49,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:49,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478281964] [2020-10-13 15:35:49,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:49,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:49,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638382233] [2020-10-13 15:35:49,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:49,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:49,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:49,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:49,579 INFO L87 Difference]: Start difference. First operand 199 states and 291 transitions. Second operand 5 states. [2020-10-13 15:35:50,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:50,378 INFO L93 Difference]: Finished difference Result 480 states and 718 transitions. [2020-10-13 15:35:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:50,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:35:50,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:50,381 INFO L225 Difference]: With dead ends: 480 [2020-10-13 15:35:50,381 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:35:50,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:50,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:35:50,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 240. [2020-10-13 15:35:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-13 15:35:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 365 transitions. [2020-10-13 15:35:50,392 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 365 transitions. Word has length 87 [2020-10-13 15:35:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:50,392 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 365 transitions. [2020-10-13 15:35:50,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 365 transitions. [2020-10-13 15:35:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:35:50,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:50,395 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-13 15:35:50,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:35:50,395 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:50,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:50,396 INFO L82 PathProgramCache]: Analyzing trace with hash -190069564, now seen corresponding path program 1 times [2020-10-13 15:35:50,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:50,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997012409] [2020-10-13 15:35:50,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:50,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:50,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:50,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:35:50,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-13 15:35:50,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:35:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:50,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:50,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:50,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:50,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:50,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:50,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:50,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997012409] [2020-10-13 15:35:50,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:50,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:50,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656909867] [2020-10-13 15:35:50,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:50,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:50,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:50,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:50,862 INFO L87 Difference]: Start difference. First operand 240 states and 365 transitions. Second operand 5 states. [2020-10-13 15:35:51,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:51,615 INFO L93 Difference]: Finished difference Result 504 states and 776 transitions. [2020-10-13 15:35:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:51,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:35:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:51,617 INFO L225 Difference]: With dead ends: 504 [2020-10-13 15:35:51,617 INFO L226 Difference]: Without dead ends: 289 [2020-10-13 15:35:51,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-13 15:35:51,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 264. [2020-10-13 15:35:51,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-13 15:35:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 407 transitions. [2020-10-13 15:35:51,628 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 407 transitions. Word has length 87 [2020-10-13 15:35:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:51,628 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 407 transitions. [2020-10-13 15:35:51,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 407 transitions. [2020-10-13 15:35:51,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 15:35:51,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:51,630 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-13 15:35:51,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:35:51,630 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:51,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2072646208, now seen corresponding path program 1 times [2020-10-13 15:35:51,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:51,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691966722] [2020-10-13 15:35:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:51,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:51,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 15:35:51,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 15:35:51,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:35:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:51,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:51,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:51,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:51,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:51,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691966722] [2020-10-13 15:35:51,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:51,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:51,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355241727] [2020-10-13 15:35:51,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:51,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:51,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:51,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:51,852 INFO L87 Difference]: Start difference. First operand 264 states and 407 transitions. Second operand 5 states. [2020-10-13 15:35:52,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:52,602 INFO L93 Difference]: Finished difference Result 562 states and 866 transitions. [2020-10-13 15:35:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:52,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-13 15:35:52,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:52,607 INFO L225 Difference]: With dead ends: 562 [2020-10-13 15:35:52,607 INFO L226 Difference]: Without dead ends: 323 [2020-10-13 15:35:52,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-13 15:35:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 265. [2020-10-13 15:35:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:35:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 408 transitions. [2020-10-13 15:35:52,619 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 408 transitions. Word has length 88 [2020-10-13 15:35:52,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:52,620 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 408 transitions. [2020-10-13 15:35:52,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:52,620 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 408 transitions. [2020-10-13 15:35:52,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:35:52,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:52,622 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:35:52,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:35:52,622 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:52,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:52,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1710853865, now seen corresponding path program 1 times [2020-10-13 15:35:52,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:52,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270624999] [2020-10-13 15:35:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:53,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:35:53,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-13 15:35:53,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:35:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:53,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:53,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:53,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:53,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:53,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:53,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:53,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270624999] [2020-10-13 15:35:53,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:53,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:53,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860020603] [2020-10-13 15:35:53,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:53,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:53,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:53,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:53,488 INFO L87 Difference]: Start difference. First operand 265 states and 408 transitions. Second operand 5 states. [2020-10-13 15:35:54,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:54,275 INFO L93 Difference]: Finished difference Result 563 states and 866 transitions. [2020-10-13 15:35:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:54,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:35:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:54,280 INFO L225 Difference]: With dead ends: 563 [2020-10-13 15:35:54,280 INFO L226 Difference]: Without dead ends: 323 [2020-10-13 15:35:54,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:54,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-13 15:35:54,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 265. [2020-10-13 15:35:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:35:54,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 407 transitions. [2020-10-13 15:35:54,288 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 407 transitions. Word has length 100 [2020-10-13 15:35:54,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:54,289 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 407 transitions. [2020-10-13 15:35:54,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 407 transitions. [2020-10-13 15:35:54,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:35:54,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:54,290 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:35:54,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:35:54,291 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:54,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:54,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1266953191, now seen corresponding path program 1 times [2020-10-13 15:35:54,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:54,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442986379] [2020-10-13 15:35:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:54,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:54,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:54,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:55,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:55,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:35:55,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-10-13 15:35:55,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:35:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:55,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:55,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:55,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:55,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:55,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:55,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:55,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:55,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:55,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:55,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442986379] [2020-10-13 15:35:55,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:55,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:55,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486417605] [2020-10-13 15:35:55,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:55,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:55,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:55,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:55,297 INFO L87 Difference]: Start difference. First operand 265 states and 407 transitions. Second operand 5 states. [2020-10-13 15:35:55,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:55,987 INFO L93 Difference]: Finished difference Result 530 states and 817 transitions. [2020-10-13 15:35:55,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:55,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:35:55,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:55,990 INFO L225 Difference]: With dead ends: 530 [2020-10-13 15:35:55,990 INFO L226 Difference]: Without dead ends: 290 [2020-10-13 15:35:55,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-13 15:35:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 265. [2020-10-13 15:35:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:35:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 406 transitions. [2020-10-13 15:35:55,999 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 406 transitions. Word has length 100 [2020-10-13 15:35:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:55,999 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 406 transitions. [2020-10-13 15:35:56,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 406 transitions. [2020-10-13 15:35:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:35:56,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:56,001 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:35:56,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:35:56,002 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:56,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:56,002 INFO L82 PathProgramCache]: Analyzing trace with hash 393080482, now seen corresponding path program 1 times [2020-10-13 15:35:56,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:56,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119892533] [2020-10-13 15:35:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:56,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:56,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:56,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:35:56,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:56,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-13 15:35:56,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:35:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:56,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:56,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:56,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:56,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:56,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119892533] [2020-10-13 15:35:56,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:56,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:56,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16135119] [2020-10-13 15:35:56,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:56,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:56,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:56,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:56,735 INFO L87 Difference]: Start difference. First operand 265 states and 406 transitions. Second operand 5 states. [2020-10-13 15:35:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:57,490 INFO L93 Difference]: Finished difference Result 561 states and 860 transitions. [2020-10-13 15:35:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:57,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:35:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:57,493 INFO L225 Difference]: With dead ends: 561 [2020-10-13 15:35:57,493 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:35:57,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:35:57,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 265. [2020-10-13 15:35:57,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:35:57,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 405 transitions. [2020-10-13 15:35:57,502 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 405 transitions. Word has length 101 [2020-10-13 15:35:57,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:57,502 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 405 transitions. [2020-10-13 15:35:57,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:57,502 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 405 transitions. [2020-10-13 15:35:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:35:57,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:57,503 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:35:57,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:35:57,504 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:57,504 INFO L82 PathProgramCache]: Analyzing trace with hash 533807169, now seen corresponding path program 1 times [2020-10-13 15:35:57,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:57,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687201721] [2020-10-13 15:35:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:57,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:35:57,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:57,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-13 15:35:57,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:35:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:57,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:57,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:57,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:57,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:57,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687201721] [2020-10-13 15:35:57,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:57,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:57,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423203658] [2020-10-13 15:35:57,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:57,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:57,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:57,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:57,965 INFO L87 Difference]: Start difference. First operand 265 states and 405 transitions. Second operand 5 states. [2020-10-13 15:35:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:58,719 INFO L93 Difference]: Finished difference Result 560 states and 857 transitions. [2020-10-13 15:35:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:58,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:35:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:58,722 INFO L225 Difference]: With dead ends: 560 [2020-10-13 15:35:58,722 INFO L226 Difference]: Without dead ends: 320 [2020-10-13 15:35:58,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-13 15:35:58,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 265. [2020-10-13 15:35:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:35:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 404 transitions. [2020-10-13 15:35:58,731 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 404 transitions. Word has length 101 [2020-10-13 15:35:58,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:58,731 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 404 transitions. [2020-10-13 15:35:58,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:58,732 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 404 transitions. [2020-10-13 15:35:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:35:58,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:58,733 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:35:58,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:35:58,733 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:58,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:58,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1269099488, now seen corresponding path program 1 times [2020-10-13 15:35:58,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:58,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044753679] [2020-10-13 15:35:58,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:59,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:35:59,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:59,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-13 15:35:59,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:59,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:59,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:59,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:35:59,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:59,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:59,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:59,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:59,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:59,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:59,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044753679] [2020-10-13 15:35:59,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:59,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:59,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589173110] [2020-10-13 15:35:59,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:59,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:59,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:59,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:59,465 INFO L87 Difference]: Start difference. First operand 265 states and 404 transitions. Second operand 5 states. [2020-10-13 15:36:00,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:00,153 INFO L93 Difference]: Finished difference Result 528 states and 809 transitions. [2020-10-13 15:36:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:00,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:36:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:00,156 INFO L225 Difference]: With dead ends: 528 [2020-10-13 15:36:00,156 INFO L226 Difference]: Without dead ends: 288 [2020-10-13 15:36:00,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-13 15:36:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 265. [2020-10-13 15:36:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 403 transitions. [2020-10-13 15:36:00,164 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 403 transitions. Word has length 101 [2020-10-13 15:36:00,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:00,165 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 403 transitions. [2020-10-13 15:36:00,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 403 transitions. [2020-10-13 15:36:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:36:00,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:00,166 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:36:00,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:36:00,167 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:00,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1409826175, now seen corresponding path program 1 times [2020-10-13 15:36:00,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:00,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142234822] [2020-10-13 15:36:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:00,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:36:00,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:00,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-13 15:36:00,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:36:00,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:00,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:00,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:00,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:00,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142234822] [2020-10-13 15:36:00,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:00,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:00,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288450431] [2020-10-13 15:36:00,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:00,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:00,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:00,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:00,644 INFO L87 Difference]: Start difference. First operand 265 states and 403 transitions. Second operand 5 states. [2020-10-13 15:36:01,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:01,329 INFO L93 Difference]: Finished difference Result 527 states and 806 transitions. [2020-10-13 15:36:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:01,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:36:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:01,332 INFO L225 Difference]: With dead ends: 527 [2020-10-13 15:36:01,333 INFO L226 Difference]: Without dead ends: 287 [2020-10-13 15:36:01,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-13 15:36:01,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 265. [2020-10-13 15:36:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 402 transitions. [2020-10-13 15:36:01,341 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 402 transitions. Word has length 101 [2020-10-13 15:36:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:01,341 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 402 transitions. [2020-10-13 15:36:01,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 402 transitions. [2020-10-13 15:36:01,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:36:01,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:01,342 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-13 15:36:01,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:36:01,343 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:01,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:01,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1436913752, now seen corresponding path program 1 times [2020-10-13 15:36:01,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:01,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294149814] [2020-10-13 15:36:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:06,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:36:06,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:36:06,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:06,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:06,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:36:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:06,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:06,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:06,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:36:06,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:06,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294149814] [2020-10-13 15:36:06,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:06,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:06,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043215107] [2020-10-13 15:36:06,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:06,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:06,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:06,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:06,416 INFO L87 Difference]: Start difference. First operand 265 states and 402 transitions. Second operand 5 states. [2020-10-13 15:36:07,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:07,147 INFO L93 Difference]: Finished difference Result 559 states and 850 transitions. [2020-10-13 15:36:07,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:07,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:36:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:07,149 INFO L225 Difference]: With dead ends: 559 [2020-10-13 15:36:07,149 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 15:36:07,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 15:36:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 265. [2020-10-13 15:36:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 401 transitions. [2020-10-13 15:36:07,159 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 401 transitions. Word has length 102 [2020-10-13 15:36:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:07,159 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 401 transitions. [2020-10-13 15:36:07,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:07,160 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 401 transitions. [2020-10-13 15:36:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:36:07,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:07,161 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 15:36:07,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:36:07,161 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:07,162 INFO L82 PathProgramCache]: Analyzing trace with hash 449989692, now seen corresponding path program 1 times [2020-10-13 15:36:07,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:07,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24268556] [2020-10-13 15:36:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:07,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:07,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:07,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:07,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:12,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:12,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:36:12,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:12,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:36:12,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:12,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:12,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:12,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:12,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:12,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:12,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:12,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24268556] [2020-10-13 15:36:12,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:12,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:12,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463632846] [2020-10-13 15:36:12,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:12,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:12,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:12,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:12,242 INFO L87 Difference]: Start difference. First operand 265 states and 401 transitions. Second operand 5 states. [2020-10-13 15:36:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:12,990 INFO L93 Difference]: Finished difference Result 559 states and 848 transitions. [2020-10-13 15:36:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:12,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:36:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:12,993 INFO L225 Difference]: With dead ends: 559 [2020-10-13 15:36:12,993 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 15:36:12,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:12,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 15:36:13,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 265. [2020-10-13 15:36:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:13,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 400 transitions. [2020-10-13 15:36:13,002 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 400 transitions. Word has length 102 [2020-10-13 15:36:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:13,003 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 400 transitions. [2020-10-13 15:36:13,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:13,003 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 400 transitions. [2020-10-13 15:36:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:36:13,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:13,004 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-13 15:36:13,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:36:13,005 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:13,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:13,005 INFO L82 PathProgramCache]: Analyzing trace with hash -50128342, now seen corresponding path program 1 times [2020-10-13 15:36:13,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:13,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639324117] [2020-10-13 15:36:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:18,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:36:18,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:36:18,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:36:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:18,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:18,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:18,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:18,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:36:18,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:18,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639324117] [2020-10-13 15:36:18,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:18,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:18,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030521843] [2020-10-13 15:36:18,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:18,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:18,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:18,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:18,087 INFO L87 Difference]: Start difference. First operand 265 states and 400 transitions. Second operand 5 states. [2020-10-13 15:36:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:18,724 INFO L93 Difference]: Finished difference Result 526 states and 799 transitions. [2020-10-13 15:36:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:18,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:36:18,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:18,727 INFO L225 Difference]: With dead ends: 526 [2020-10-13 15:36:18,727 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:36:18,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:18,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:36:18,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 265. [2020-10-13 15:36:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 399 transitions. [2020-10-13 15:36:18,736 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 399 transitions. Word has length 102 [2020-10-13 15:36:18,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:18,736 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 399 transitions. [2020-10-13 15:36:18,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:18,736 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 399 transitions. [2020-10-13 15:36:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:36:18,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:18,738 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 15:36:18,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:36:18,738 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:18,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1836775102, now seen corresponding path program 1 times [2020-10-13 15:36:18,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:18,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746543937] [2020-10-13 15:36:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:23,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:36:23,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:23,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4658 [2020-10-13 15:36:23,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:23,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:23,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:23,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:23,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:23,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:36:23,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:23,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746543937] [2020-10-13 15:36:23,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:23,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:23,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487501645] [2020-10-13 15:36:23,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:23,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:23,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:23,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:23,481 INFO L87 Difference]: Start difference. First operand 265 states and 399 transitions. Second operand 5 states. [2020-10-13 15:36:24,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:24,162 INFO L93 Difference]: Finished difference Result 526 states and 797 transitions. [2020-10-13 15:36:24,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:24,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:36:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:24,164 INFO L225 Difference]: With dead ends: 526 [2020-10-13 15:36:24,164 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:36:24,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:24,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:36:24,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 265. [2020-10-13 15:36:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 398 transitions. [2020-10-13 15:36:24,171 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 398 transitions. Word has length 102 [2020-10-13 15:36:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:24,172 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 398 transitions. [2020-10-13 15:36:24,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 398 transitions. [2020-10-13 15:36:24,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:36:24,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:24,173 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-13 15:36:24,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:36:24,174 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:24,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:24,174 INFO L82 PathProgramCache]: Analyzing trace with hash -286144057, now seen corresponding path program 1 times [2020-10-13 15:36:24,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:24,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988855846] [2020-10-13 15:36:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:24,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:28,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:28,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:36:28,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4476 [2020-10-13 15:36:28,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:28,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:28,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:28,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:28,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:28,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:28,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:28,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988855846] [2020-10-13 15:36:28,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:28,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:28,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106354253] [2020-10-13 15:36:28,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:28,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:28,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:28,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:28,741 INFO L87 Difference]: Start difference. First operand 265 states and 398 transitions. Second operand 5 states. [2020-10-13 15:36:29,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:29,535 INFO L93 Difference]: Finished difference Result 559 states and 842 transitions. [2020-10-13 15:36:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:29,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:36:29,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:29,538 INFO L225 Difference]: With dead ends: 559 [2020-10-13 15:36:29,538 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 15:36:29,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:29,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 15:36:29,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 265. [2020-10-13 15:36:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 397 transitions. [2020-10-13 15:36:29,546 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 397 transitions. Word has length 103 [2020-10-13 15:36:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:29,547 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 397 transitions. [2020-10-13 15:36:29,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:29,547 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 397 transitions. [2020-10-13 15:36:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:36:29,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:29,548 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-13 15:36:29,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:36:29,548 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:29,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:29,549 INFO L82 PathProgramCache]: Analyzing trace with hash -245469307, now seen corresponding path program 1 times [2020-10-13 15:36:29,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:29,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072160381] [2020-10-13 15:36:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:34,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:36:34,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:34,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4619 [2020-10-13 15:36:34,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:34,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:34,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:34,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:34,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:34,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:34,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072160381] [2020-10-13 15:36:34,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:34,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:34,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816886086] [2020-10-13 15:36:34,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:34,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:34,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:34,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:34,256 INFO L87 Difference]: Start difference. First operand 265 states and 397 transitions. Second operand 5 states. [2020-10-13 15:36:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:34,927 INFO L93 Difference]: Finished difference Result 526 states and 793 transitions. [2020-10-13 15:36:34,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:34,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:36:34,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:34,930 INFO L225 Difference]: With dead ends: 526 [2020-10-13 15:36:34,930 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:36:34,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:36:34,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 265. [2020-10-13 15:36:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 396 transitions. [2020-10-13 15:36:34,938 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 396 transitions. Word has length 103 [2020-10-13 15:36:34,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:34,938 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 396 transitions. [2020-10-13 15:36:34,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:34,939 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 396 transitions. [2020-10-13 15:36:34,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:36:34,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:34,940 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-10-13 15:36:34,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:36:34,940 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:34,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:34,941 INFO L82 PathProgramCache]: Analyzing trace with hash -366691103, now seen corresponding path program 1 times [2020-10-13 15:36:34,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:34,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785450670] [2020-10-13 15:36:34,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:34,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:35,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:35,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:37,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:39,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:39,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:36:39,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:36:39,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:40,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785450670] [2020-10-13 15:36:40,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:40,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:40,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881404946] [2020-10-13 15:36:40,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:40,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:40,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:40,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:40,032 INFO L87 Difference]: Start difference. First operand 265 states and 396 transitions. Second operand 5 states. [2020-10-13 15:36:40,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:40,833 INFO L93 Difference]: Finished difference Result 559 states and 838 transitions. [2020-10-13 15:36:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:40,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:36:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:40,836 INFO L225 Difference]: With dead ends: 559 [2020-10-13 15:36:40,836 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 15:36:40,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:40,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 15:36:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 265. [2020-10-13 15:36:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 395 transitions. [2020-10-13 15:36:40,848 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 395 transitions. Word has length 104 [2020-10-13 15:36:40,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:40,848 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 395 transitions. [2020-10-13 15:36:40,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 395 transitions. [2020-10-13 15:36:40,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:36:40,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:40,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-10-13 15:36:40,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:36:40,850 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:40,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:40,851 INFO L82 PathProgramCache]: Analyzing trace with hash 894226147, now seen corresponding path program 1 times [2020-10-13 15:36:40,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:40,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065892507] [2020-10-13 15:36:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:45,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:36:45,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:45,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4508 [2020-10-13 15:36:45,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:45,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:45,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:45,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:45,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:45,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:45,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065892507] [2020-10-13 15:36:45,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:45,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:45,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274803556] [2020-10-13 15:36:45,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:45,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:45,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:45,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:45,450 INFO L87 Difference]: Start difference. First operand 265 states and 395 transitions. Second operand 5 states. [2020-10-13 15:36:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:46,153 INFO L93 Difference]: Finished difference Result 526 states and 789 transitions. [2020-10-13 15:36:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:46,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:36:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:46,155 INFO L225 Difference]: With dead ends: 526 [2020-10-13 15:36:46,155 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:36:46,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:36:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 265. [2020-10-13 15:36:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 394 transitions. [2020-10-13 15:36:46,162 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 394 transitions. Word has length 104 [2020-10-13 15:36:46,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:46,162 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 394 transitions. [2020-10-13 15:36:46,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 394 transitions. [2020-10-13 15:36:46,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:36:46,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:46,163 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:36:46,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:36:46,164 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:46,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1598886836, now seen corresponding path program 1 times [2020-10-13 15:36:46,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:46,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002620881] [2020-10-13 15:36:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:46,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:48,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:51,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:51,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:36:51,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:51,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4951 [2020-10-13 15:36:51,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:51,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:51,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:51,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:51,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:51,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:51,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:51,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002620881] [2020-10-13 15:36:51,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:51,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:51,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528259305] [2020-10-13 15:36:51,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:51,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:51,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:51,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:51,232 INFO L87 Difference]: Start difference. First operand 265 states and 394 transitions. Second operand 5 states. [2020-10-13 15:36:51,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:51,987 INFO L93 Difference]: Finished difference Result 549 states and 822 transitions. [2020-10-13 15:36:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:51,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:36:51,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:51,990 INFO L225 Difference]: With dead ends: 549 [2020-10-13 15:36:51,991 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:36:51,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:51,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:36:51,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-10-13 15:36:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 393 transitions. [2020-10-13 15:36:51,999 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 393 transitions. Word has length 105 [2020-10-13 15:36:51,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:51,999 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 393 transitions. [2020-10-13 15:36:51,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 393 transitions. [2020-10-13 15:36:52,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:36:52,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:52,001 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:36:52,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:36:52,001 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:52,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:52,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1165157750, now seen corresponding path program 1 times [2020-10-13 15:36:52,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:52,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144665853] [2020-10-13 15:36:52,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:56,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:36:56,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4927 [2020-10-13 15:36:56,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:56,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:57,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:57,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:57,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:57,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:36:57,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:57,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:57,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144665853] [2020-10-13 15:36:57,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:57,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:57,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699585612] [2020-10-13 15:36:57,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:57,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:57,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:57,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:57,014 INFO L87 Difference]: Start difference. First operand 265 states and 393 transitions. Second operand 5 states. [2020-10-13 15:36:57,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:57,649 INFO L93 Difference]: Finished difference Result 516 states and 773 transitions. [2020-10-13 15:36:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:57,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:36:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:57,653 INFO L225 Difference]: With dead ends: 516 [2020-10-13 15:36:57,653 INFO L226 Difference]: Without dead ends: 276 [2020-10-13 15:36:57,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:57,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-13 15:36:57,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 265. [2020-10-13 15:36:57,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:57,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 392 transitions. [2020-10-13 15:36:57,661 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 392 transitions. Word has length 105 [2020-10-13 15:36:57,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:57,661 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 392 transitions. [2020-10-13 15:36:57,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 392 transitions. [2020-10-13 15:36:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:36:57,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:57,663 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:36:57,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:36:57,663 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:57,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:57,663 INFO L82 PathProgramCache]: Analyzing trace with hash -982964514, now seen corresponding path program 1 times [2020-10-13 15:36:57,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:57,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582697122] [2020-10-13 15:36:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:58,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:36:58,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-13 15:36:58,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:36:58,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:58,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:58,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:58,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:58,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:58,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:36:58,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:58,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:58,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582697122] [2020-10-13 15:36:58,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:58,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:58,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242266615] [2020-10-13 15:36:58,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:58,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:58,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:58,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:58,367 INFO L87 Difference]: Start difference. First operand 265 states and 392 transitions. Second operand 5 states. [2020-10-13 15:36:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:59,121 INFO L93 Difference]: Finished difference Result 549 states and 818 transitions. [2020-10-13 15:36:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:59,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:36:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:59,124 INFO L225 Difference]: With dead ends: 549 [2020-10-13 15:36:59,124 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:36:59,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:59,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:36:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-10-13 15:36:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:36:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 391 transitions. [2020-10-13 15:36:59,130 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 391 transitions. Word has length 109 [2020-10-13 15:36:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:59,131 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 391 transitions. [2020-10-13 15:36:59,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:59,131 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 391 transitions. [2020-10-13 15:36:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:36:59,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:59,132 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:36:59,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:36:59,132 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash -303692260, now seen corresponding path program 1 times [2020-10-13 15:36:59,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:59,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576170453] [2020-10-13 15:36:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:59,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:36:59,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:59,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 15:36:59,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:59,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:59,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:36:59,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:36:59,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:59,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:59,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:59,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:59,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:59,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:36:59,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576170453] [2020-10-13 15:36:59,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:59,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:59,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957318470] [2020-10-13 15:36:59,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:59,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:59,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:59,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:59,495 INFO L87 Difference]: Start difference. First operand 265 states and 391 transitions. Second operand 5 states. [2020-10-13 15:37:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:00,161 INFO L93 Difference]: Finished difference Result 558 states and 835 transitions. [2020-10-13 15:37:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:00,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:37:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:00,164 INFO L225 Difference]: With dead ends: 558 [2020-10-13 15:37:00,164 INFO L226 Difference]: Without dead ends: 318 [2020-10-13 15:37:00,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-13 15:37:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 291. [2020-10-13 15:37:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-13 15:37:00,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 437 transitions. [2020-10-13 15:37:00,171 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 437 transitions. Word has length 109 [2020-10-13 15:37:00,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:00,172 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 437 transitions. [2020-10-13 15:37:00,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:00,172 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 437 transitions. [2020-10-13 15:37:00,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:37:00,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:00,173 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:00,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:37:00,173 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:00,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:00,173 INFO L82 PathProgramCache]: Analyzing trace with hash -50354604, now seen corresponding path program 1 times [2020-10-13 15:37:00,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:00,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658998849] [2020-10-13 15:37:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:00,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:37:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-13 15:37:00,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:37:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:00,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:00,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:00,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:00,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:00,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:00,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658998849] [2020-10-13 15:37:00,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:00,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:00,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027962970] [2020-10-13 15:37:00,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:00,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:00,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:00,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:00,852 INFO L87 Difference]: Start difference. First operand 291 states and 437 transitions. Second operand 5 states. [2020-10-13 15:37:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:01,626 INFO L93 Difference]: Finished difference Result 601 states and 908 transitions. [2020-10-13 15:37:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:01,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:37:01,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:01,628 INFO L225 Difference]: With dead ends: 601 [2020-10-13 15:37:01,628 INFO L226 Difference]: Without dead ends: 335 [2020-10-13 15:37:01,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:01,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-13 15:37:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 291. [2020-10-13 15:37:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-13 15:37:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 436 transitions. [2020-10-13 15:37:01,637 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 436 transitions. Word has length 112 [2020-10-13 15:37:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:01,637 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 436 transitions. [2020-10-13 15:37:01,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 436 transitions. [2020-10-13 15:37:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:37:01,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:01,639 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:01,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:37:01,639 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:01,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:01,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1039963935, now seen corresponding path program 1 times [2020-10-13 15:37:01,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:01,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360393269] [2020-10-13 15:37:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:01,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:02,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:37:02,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:02,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-13 15:37:02,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:02,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:02,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 15:37:02,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:37:02,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:02,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:02,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:02,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:02,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:02,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:02,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:02,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360393269] [2020-10-13 15:37:02,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:02,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:02,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92646423] [2020-10-13 15:37:02,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:02,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:02,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:02,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:02,338 INFO L87 Difference]: Start difference. First operand 291 states and 436 transitions. Second operand 5 states. [2020-10-13 15:37:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:03,142 INFO L93 Difference]: Finished difference Result 624 states and 948 transitions. [2020-10-13 15:37:03,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:03,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:37:03,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:03,144 INFO L225 Difference]: With dead ends: 624 [2020-10-13 15:37:03,144 INFO L226 Difference]: Without dead ends: 358 [2020-10-13 15:37:03,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:03,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-13 15:37:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 321. [2020-10-13 15:37:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-13 15:37:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 490 transitions. [2020-10-13 15:37:03,152 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 490 transitions. Word has length 113 [2020-10-13 15:37:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:03,152 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 490 transitions. [2020-10-13 15:37:03,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 490 transitions. [2020-10-13 15:37:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:37:03,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:03,154 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:37:03,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:37:03,154 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:03,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:03,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1767244474, now seen corresponding path program 1 times [2020-10-13 15:37:03,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:03,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328116277] [2020-10-13 15:37:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:03,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:03,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:37:03,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-13 15:37:03,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:37:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:03,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:03,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:03,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:03,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328116277] [2020-10-13 15:37:03,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:03,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:03,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130494274] [2020-10-13 15:37:03,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:03,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:03,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:03,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:03,903 INFO L87 Difference]: Start difference. First operand 321 states and 490 transitions. Second operand 5 states. [2020-10-13 15:37:04,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:04,667 INFO L93 Difference]: Finished difference Result 661 states and 1014 transitions. [2020-10-13 15:37:04,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:04,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:37:04,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:04,671 INFO L225 Difference]: With dead ends: 661 [2020-10-13 15:37:04,671 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:37:04,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:37:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 321. [2020-10-13 15:37:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-13 15:37:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 489 transitions. [2020-10-13 15:37:04,680 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 489 transitions. Word has length 114 [2020-10-13 15:37:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:04,681 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 489 transitions. [2020-10-13 15:37:04,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:04,681 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 489 transitions. [2020-10-13 15:37:04,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:37:04,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:04,682 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:04,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:37:04,683 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:04,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:04,683 INFO L82 PathProgramCache]: Analyzing trace with hash -4545975, now seen corresponding path program 1 times [2020-10-13 15:37:04,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:04,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934177898] [2020-10-13 15:37:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:04,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:05,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:37:05,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-13 15:37:05,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:37:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:05,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:05,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:05,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:05,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:05,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934177898] [2020-10-13 15:37:05,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:05,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:05,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243617846] [2020-10-13 15:37:05,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:05,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:05,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:05,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:05,524 INFO L87 Difference]: Start difference. First operand 321 states and 489 transitions. Second operand 5 states. [2020-10-13 15:37:06,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:06,314 INFO L93 Difference]: Finished difference Result 661 states and 1012 transitions. [2020-10-13 15:37:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:06,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:37:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:06,319 INFO L225 Difference]: With dead ends: 661 [2020-10-13 15:37:06,320 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:37:06,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:37:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 321. [2020-10-13 15:37:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-13 15:37:06,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 488 transitions. [2020-10-13 15:37:06,328 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 488 transitions. Word has length 115 [2020-10-13 15:37:06,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:06,328 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 488 transitions. [2020-10-13 15:37:06,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:06,328 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 488 transitions. [2020-10-13 15:37:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:37:06,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:06,330 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:06,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:37:06,330 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:06,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:06,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1123339621, now seen corresponding path program 1 times [2020-10-13 15:37:06,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:06,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331529563] [2020-10-13 15:37:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:06,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:37:06,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-10-13 15:37:06,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 15:37:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:37:06,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:07,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:07,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:07,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:07,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:07,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:07,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331529563] [2020-10-13 15:37:07,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:07,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:07,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019272309] [2020-10-13 15:37:07,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:07,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:07,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:07,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:07,073 INFO L87 Difference]: Start difference. First operand 321 states and 488 transitions. Second operand 5 states. [2020-10-13 15:37:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:07,914 INFO L93 Difference]: Finished difference Result 689 states and 1060 transitions. [2020-10-13 15:37:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:07,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:37:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:07,917 INFO L225 Difference]: With dead ends: 689 [2020-10-13 15:37:07,918 INFO L226 Difference]: Without dead ends: 393 [2020-10-13 15:37:07,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:07,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-13 15:37:07,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 353. [2020-10-13 15:37:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-13 15:37:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 546 transitions. [2020-10-13 15:37:07,925 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 546 transitions. Word has length 115 [2020-10-13 15:37:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:07,925 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 546 transitions. [2020-10-13 15:37:07,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 546 transitions. [2020-10-13 15:37:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:37:07,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:07,926 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:07,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:37:07,926 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:07,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:07,927 INFO L82 PathProgramCache]: Analyzing trace with hash -420340162, now seen corresponding path program 1 times [2020-10-13 15:37:07,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:07,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478350057] [2020-10-13 15:37:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:08,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:37:08,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:08,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-13 15:37:08,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:37:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:37:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:08,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:08,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:08,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:08,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:08,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:37:08,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:08,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478350057] [2020-10-13 15:37:08,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:08,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:08,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068598588] [2020-10-13 15:37:08,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:08,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:08,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:08,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:08,935 INFO L87 Difference]: Start difference. First operand 353 states and 546 transitions. Second operand 5 states. [2020-10-13 15:37:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:09,734 INFO L93 Difference]: Finished difference Result 744 states and 1162 transitions. [2020-10-13 15:37:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:09,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:37:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:09,738 INFO L225 Difference]: With dead ends: 744 [2020-10-13 15:37:09,738 INFO L226 Difference]: Without dead ends: 416 [2020-10-13 15:37:09,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:09,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-13 15:37:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 381. [2020-10-13 15:37:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-13 15:37:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 596 transitions. [2020-10-13 15:37:09,747 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 596 transitions. Word has length 116 [2020-10-13 15:37:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:09,747 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 596 transitions. [2020-10-13 15:37:09,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 596 transitions. [2020-10-13 15:37:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:37:09,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:09,749 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:09,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:37:09,749 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:09,750 INFO L82 PathProgramCache]: Analyzing trace with hash 54250332, now seen corresponding path program 1 times [2020-10-13 15:37:09,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:09,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4689097] [2020-10-13 15:37:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:09,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:37:09,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 15:37:09,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:37:09,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:09,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:10,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:10,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4689097] [2020-10-13 15:37:10,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:10,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:10,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667973546] [2020-10-13 15:37:10,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:10,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:10,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:10,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:10,017 INFO L87 Difference]: Start difference. First operand 381 states and 596 transitions. Second operand 5 states. [2020-10-13 15:37:10,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:10,749 INFO L93 Difference]: Finished difference Result 778 states and 1222 transitions. [2020-10-13 15:37:10,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:10,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:37:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:10,753 INFO L225 Difference]: With dead ends: 778 [2020-10-13 15:37:10,753 INFO L226 Difference]: Without dead ends: 422 [2020-10-13 15:37:10,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:10,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-13 15:37:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 381. [2020-10-13 15:37:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-13 15:37:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 595 transitions. [2020-10-13 15:37:10,759 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 595 transitions. Word has length 116 [2020-10-13 15:37:10,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:10,760 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 595 transitions. [2020-10-13 15:37:10,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 595 transitions. [2020-10-13 15:37:10,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:37:10,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:10,761 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:10,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:37:10,761 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:10,761 INFO L82 PathProgramCache]: Analyzing trace with hash -885646080, now seen corresponding path program 1 times [2020-10-13 15:37:10,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:10,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517076962] [2020-10-13 15:37:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:10,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:12,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:12,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:37:12,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:37:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1917 [2020-10-13 15:37:12,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:37:12,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:12,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:12,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:12,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:12,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:12,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:12,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:12,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517076962] [2020-10-13 15:37:12,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:12,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:12,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373669420] [2020-10-13 15:37:12,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:12,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:12,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:12,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:12,772 INFO L87 Difference]: Start difference. First operand 381 states and 595 transitions. Second operand 5 states. [2020-10-13 15:37:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:13,500 INFO L93 Difference]: Finished difference Result 770 states and 1207 transitions. [2020-10-13 15:37:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:13,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:37:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:13,502 INFO L225 Difference]: With dead ends: 770 [2020-10-13 15:37:13,502 INFO L226 Difference]: Without dead ends: 414 [2020-10-13 15:37:13,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:13,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-13 15:37:13,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 381. [2020-10-13 15:37:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-13 15:37:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 594 transitions. [2020-10-13 15:37:13,510 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 594 transitions. Word has length 118 [2020-10-13 15:37:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:13,510 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 594 transitions. [2020-10-13 15:37:13,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:13,511 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 594 transitions. [2020-10-13 15:37:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:37:13,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:13,512 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:13,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:37:13,512 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2043518202, now seen corresponding path program 1 times [2020-10-13 15:37:13,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:13,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806801262] [2020-10-13 15:37:13,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:14,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:37:14,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:14,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-13 15:37:14,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:14,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:37:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:37:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:14,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:14,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:14,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:14,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:14,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:14,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806801262] [2020-10-13 15:37:14,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:14,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:14,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531967981] [2020-10-13 15:37:14,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:14,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:14,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:14,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:14,204 INFO L87 Difference]: Start difference. First operand 381 states and 594 transitions. Second operand 5 states. [2020-10-13 15:37:14,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:14,890 INFO L93 Difference]: Finished difference Result 775 states and 1217 transitions. [2020-10-13 15:37:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:14,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:37:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:14,893 INFO L225 Difference]: With dead ends: 775 [2020-10-13 15:37:14,893 INFO L226 Difference]: Without dead ends: 419 [2020-10-13 15:37:14,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:14,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-10-13 15:37:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 402. [2020-10-13 15:37:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-10-13 15:37:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 630 transitions. [2020-10-13 15:37:14,901 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 630 transitions. Word has length 118 [2020-10-13 15:37:14,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:14,901 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 630 transitions. [2020-10-13 15:37:14,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:14,901 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 630 transitions. [2020-10-13 15:37:14,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:37:14,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:14,902 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:14,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:37:14,903 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:14,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:14,903 INFO L82 PathProgramCache]: Analyzing trace with hash 425884847, now seen corresponding path program 1 times [2020-10-13 15:37:14,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:14,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811317612] [2020-10-13 15:37:14,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:15,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:37:15,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-13 15:37:15,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:37:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:15,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:15,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:15,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:15,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:15,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811317612] [2020-10-13 15:37:15,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:15,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:15,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299488626] [2020-10-13 15:37:15,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:15,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:15,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:15,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:15,551 INFO L87 Difference]: Start difference. First operand 402 states and 630 transitions. Second operand 5 states. [2020-10-13 15:37:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:16,298 INFO L93 Difference]: Finished difference Result 812 states and 1277 transitions. [2020-10-13 15:37:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:16,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:37:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:16,300 INFO L225 Difference]: With dead ends: 812 [2020-10-13 15:37:16,300 INFO L226 Difference]: Without dead ends: 435 [2020-10-13 15:37:16,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-13 15:37:16,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 402. [2020-10-13 15:37:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-10-13 15:37:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 629 transitions. [2020-10-13 15:37:16,308 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 629 transitions. Word has length 119 [2020-10-13 15:37:16,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:16,308 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 629 transitions. [2020-10-13 15:37:16,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 629 transitions. [2020-10-13 15:37:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:37:16,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:16,310 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:16,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:37:16,310 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:16,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:16,311 INFO L82 PathProgramCache]: Analyzing trace with hash 902865583, now seen corresponding path program 1 times [2020-10-13 15:37:16,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:16,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624982806] [2020-10-13 15:37:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:37:16,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-13 15:37:16,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:37:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:16,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:16,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:16,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:16,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624982806] [2020-10-13 15:37:16,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:16,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:16,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619725402] [2020-10-13 15:37:16,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:16,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:16,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:16,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:16,975 INFO L87 Difference]: Start difference. First operand 402 states and 629 transitions. Second operand 5 states. [2020-10-13 15:37:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:17,711 INFO L93 Difference]: Finished difference Result 812 states and 1275 transitions. [2020-10-13 15:37:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:17,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:37:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:17,715 INFO L225 Difference]: With dead ends: 812 [2020-10-13 15:37:17,715 INFO L226 Difference]: Without dead ends: 435 [2020-10-13 15:37:17,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:17,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-13 15:37:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 402. [2020-10-13 15:37:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-10-13 15:37:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 628 transitions. [2020-10-13 15:37:17,723 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 628 transitions. Word has length 119 [2020-10-13 15:37:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:17,723 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 628 transitions. [2020-10-13 15:37:17,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 628 transitions. [2020-10-13 15:37:17,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:37:17,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:17,724 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:37:17,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:37:17,725 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1211060055, now seen corresponding path program 1 times [2020-10-13 15:37:17,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:17,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523318199] [2020-10-13 15:37:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:17,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:18,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:37:18,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-13 15:37:18,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:37:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:18,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:18,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:18,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:18,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:18,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:18,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523318199] [2020-10-13 15:37:18,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:18,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:18,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399743843] [2020-10-13 15:37:18,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:18,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:18,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:18,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:18,467 INFO L87 Difference]: Start difference. First operand 402 states and 628 transitions. Second operand 5 states. [2020-10-13 15:37:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:19,203 INFO L93 Difference]: Finished difference Result 810 states and 1271 transitions. [2020-10-13 15:37:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:19,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:37:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:19,207 INFO L225 Difference]: With dead ends: 810 [2020-10-13 15:37:19,207 INFO L226 Difference]: Without dead ends: 433 [2020-10-13 15:37:19,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:19,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-13 15:37:19,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 402. [2020-10-13 15:37:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-10-13 15:37:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 627 transitions. [2020-10-13 15:37:19,216 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 627 transitions. Word has length 120 [2020-10-13 15:37:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:19,216 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 627 transitions. [2020-10-13 15:37:19,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 627 transitions. [2020-10-13 15:37:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:37:19,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:19,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:19,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:37:19,218 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:19,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:19,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1220040183, now seen corresponding path program 1 times [2020-10-13 15:37:19,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:19,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614881984] [2020-10-13 15:37:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:19,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:37:19,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-13 15:37:19,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:37:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:37:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:19,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:19,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:19,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:19,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:19,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614881984] [2020-10-13 15:37:19,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:19,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:19,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966626072] [2020-10-13 15:37:19,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:19,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:19,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:19,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:19,870 INFO L87 Difference]: Start difference. First operand 402 states and 627 transitions. Second operand 5 states. [2020-10-13 15:37:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:20,727 INFO L93 Difference]: Finished difference Result 860 states and 1351 transitions. [2020-10-13 15:37:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:20,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:37:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:20,730 INFO L225 Difference]: With dead ends: 860 [2020-10-13 15:37:20,730 INFO L226 Difference]: Without dead ends: 483 [2020-10-13 15:37:20,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-13 15:37:20,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 437. [2020-10-13 15:37:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-13 15:37:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 691 transitions. [2020-10-13 15:37:20,738 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 691 transitions. Word has length 120 [2020-10-13 15:37:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:20,738 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 691 transitions. [2020-10-13 15:37:20,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 691 transitions. [2020-10-13 15:37:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:37:20,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:20,740 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:20,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:37:20,740 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:20,740 INFO L82 PathProgramCache]: Analyzing trace with hash 365662676, now seen corresponding path program 1 times [2020-10-13 15:37:20,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:20,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583067177] [2020-10-13 15:37:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:20,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:20,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:37:20,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:20,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 15:37:20,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:37:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:21,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:21,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:21,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:21,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:21,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:21,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:21,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:21,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583067177] [2020-10-13 15:37:21,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:21,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:21,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154790257] [2020-10-13 15:37:21,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:21,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:21,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:21,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:21,028 INFO L87 Difference]: Start difference. First operand 437 states and 691 transitions. Second operand 5 states. [2020-10-13 15:37:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:21,750 INFO L93 Difference]: Finished difference Result 880 states and 1397 transitions. [2020-10-13 15:37:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:21,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:37:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:21,753 INFO L225 Difference]: With dead ends: 880 [2020-10-13 15:37:21,753 INFO L226 Difference]: Without dead ends: 468 [2020-10-13 15:37:21,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:21,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-10-13 15:37:21,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 437. [2020-10-13 15:37:21,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-13 15:37:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 690 transitions. [2020-10-13 15:37:21,761 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 690 transitions. Word has length 121 [2020-10-13 15:37:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:21,761 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 690 transitions. [2020-10-13 15:37:21,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 690 transitions. [2020-10-13 15:37:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:37:21,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:21,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:21,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:37:21,762 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:21,762 INFO L82 PathProgramCache]: Analyzing trace with hash -65345042, now seen corresponding path program 1 times [2020-10-13 15:37:21,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:21,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539801180] [2020-10-13 15:37:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:21,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:21,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:37:21,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:21,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 15:37:21,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:37:21,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:22,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:22,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:22,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:22,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:22,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:22,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:22,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:22,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539801180] [2020-10-13 15:37:22,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:22,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:22,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607328394] [2020-10-13 15:37:22,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:22,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:22,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:22,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:22,037 INFO L87 Difference]: Start difference. First operand 437 states and 690 transitions. Second operand 5 states. [2020-10-13 15:37:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:22,751 INFO L93 Difference]: Finished difference Result 878 states and 1393 transitions. [2020-10-13 15:37:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:22,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:37:22,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:22,754 INFO L225 Difference]: With dead ends: 878 [2020-10-13 15:37:22,754 INFO L226 Difference]: Without dead ends: 466 [2020-10-13 15:37:22,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:22,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-13 15:37:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 437. [2020-10-13 15:37:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-13 15:37:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 689 transitions. [2020-10-13 15:37:22,762 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 689 transitions. Word has length 122 [2020-10-13 15:37:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:22,762 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 689 transitions. [2020-10-13 15:37:22,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 689 transitions. [2020-10-13 15:37:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:37:22,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:22,764 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2020-10-13 15:37:22,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:37:22,764 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:22,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:22,765 INFO L82 PathProgramCache]: Analyzing trace with hash 959005911, now seen corresponding path program 1 times [2020-10-13 15:37:22,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:22,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711390982] [2020-10-13 15:37:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:23,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:37:23,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-13 15:37:23,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:23,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:23,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:23,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:23,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:23,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:23,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:23,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711390982] [2020-10-13 15:37:23,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:23,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:23,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849724426] [2020-10-13 15:37:23,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:23,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:23,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:23,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:23,209 INFO L87 Difference]: Start difference. First operand 437 states and 689 transitions. Second operand 5 states. [2020-10-13 15:37:23,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:23,912 INFO L93 Difference]: Finished difference Result 875 states and 1383 transitions. [2020-10-13 15:37:23,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:23,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:37:23,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:23,916 INFO L225 Difference]: With dead ends: 875 [2020-10-13 15:37:23,916 INFO L226 Difference]: Without dead ends: 463 [2020-10-13 15:37:23,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:23,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-13 15:37:23,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 437. [2020-10-13 15:37:23,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-13 15:37:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 688 transitions. [2020-10-13 15:37:23,924 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 688 transitions. Word has length 123 [2020-10-13 15:37:23,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:23,924 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 688 transitions. [2020-10-13 15:37:23,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 688 transitions. [2020-10-13 15:37:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:37:23,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:23,925 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:23,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:37:23,926 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1140654638, now seen corresponding path program 1 times [2020-10-13 15:37:23,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:23,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768154777] [2020-10-13 15:37:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:23,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:27,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:28,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:28,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:37:28,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 15:37:28,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:37:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:29,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:29,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:29,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:29,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:29,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:29,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768154777] [2020-10-13 15:37:29,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:29,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:29,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697503739] [2020-10-13 15:37:29,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:29,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:29,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:29,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:29,046 INFO L87 Difference]: Start difference. First operand 437 states and 688 transitions. Second operand 5 states. [2020-10-13 15:37:29,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:29,730 INFO L93 Difference]: Finished difference Result 874 states and 1380 transitions. [2020-10-13 15:37:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:29,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:37:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:29,733 INFO L225 Difference]: With dead ends: 874 [2020-10-13 15:37:29,734 INFO L226 Difference]: Without dead ends: 462 [2020-10-13 15:37:29,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:29,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-13 15:37:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 437. [2020-10-13 15:37:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-13 15:37:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 687 transitions. [2020-10-13 15:37:29,741 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 687 transitions. Word has length 124 [2020-10-13 15:37:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:29,741 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 687 transitions. [2020-10-13 15:37:29,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 687 transitions. [2020-10-13 15:37:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:37:29,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:29,743 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:29,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:37:29,743 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:29,743 INFO L82 PathProgramCache]: Analyzing trace with hash 746248806, now seen corresponding path program 1 times [2020-10-13 15:37:29,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:29,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899614907] [2020-10-13 15:37:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:34,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:37:34,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:37:34,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:34,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:34,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:34,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:34,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:34,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:34,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:34,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:34,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:34,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:34,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:34,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899614907] [2020-10-13 15:37:34,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:34,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:34,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985348218] [2020-10-13 15:37:34,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:34,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:34,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:34,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:34,832 INFO L87 Difference]: Start difference. First operand 437 states and 687 transitions. Second operand 5 states. [2020-10-13 15:37:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:35,502 INFO L93 Difference]: Finished difference Result 874 states and 1378 transitions. [2020-10-13 15:37:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:35,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:37:35,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:35,505 INFO L225 Difference]: With dead ends: 874 [2020-10-13 15:37:35,505 INFO L226 Difference]: Without dead ends: 462 [2020-10-13 15:37:35,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-13 15:37:35,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 437. [2020-10-13 15:37:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-13 15:37:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 686 transitions. [2020-10-13 15:37:35,512 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 686 transitions. Word has length 124 [2020-10-13 15:37:35,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:35,512 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 686 transitions. [2020-10-13 15:37:35,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 686 transitions. [2020-10-13 15:37:35,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:37:35,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:35,513 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:35,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:37:35,514 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash 307953885, now seen corresponding path program 1 times [2020-10-13 15:37:35,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:35,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709616654] [2020-10-13 15:37:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:36,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:40,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:37:40,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:37:40,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:40,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:40,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:40,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:40,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:40,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:40,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709616654] [2020-10-13 15:37:40,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:40,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:40,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007879049] [2020-10-13 15:37:40,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:40,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:40,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:40,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:40,598 INFO L87 Difference]: Start difference. First operand 437 states and 686 transitions. Second operand 5 states. [2020-10-13 15:37:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:41,270 INFO L93 Difference]: Finished difference Result 874 states and 1376 transitions. [2020-10-13 15:37:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:41,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:37:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:41,275 INFO L225 Difference]: With dead ends: 874 [2020-10-13 15:37:41,275 INFO L226 Difference]: Without dead ends: 462 [2020-10-13 15:37:41,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-13 15:37:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 437. [2020-10-13 15:37:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-13 15:37:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 685 transitions. [2020-10-13 15:37:41,284 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 685 transitions. Word has length 125 [2020-10-13 15:37:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:41,285 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 685 transitions. [2020-10-13 15:37:41,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 685 transitions. [2020-10-13 15:37:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:37:41,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:41,286 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:41,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:37:41,286 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:41,287 INFO L82 PathProgramCache]: Analyzing trace with hash 870475915, now seen corresponding path program 1 times [2020-10-13 15:37:41,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:41,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146633177] [2020-10-13 15:37:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:46,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:37:46,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:46,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 15:37:46,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:37:46,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:46,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:46,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:46,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:46,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:46,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146633177] [2020-10-13 15:37:46,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:46,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:46,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559944493] [2020-10-13 15:37:46,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:46,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:46,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:46,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:46,402 INFO L87 Difference]: Start difference. First operand 437 states and 685 transitions. Second operand 5 states. [2020-10-13 15:37:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:47,132 INFO L93 Difference]: Finished difference Result 874 states and 1374 transitions. [2020-10-13 15:37:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:47,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:37:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:47,136 INFO L225 Difference]: With dead ends: 874 [2020-10-13 15:37:47,136 INFO L226 Difference]: Without dead ends: 462 [2020-10-13 15:37:47,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-13 15:37:47,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 437. [2020-10-13 15:37:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-13 15:37:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 684 transitions. [2020-10-13 15:37:47,143 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 684 transitions. Word has length 126 [2020-10-13 15:37:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:47,143 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 684 transitions. [2020-10-13 15:37:47,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:47,143 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 684 transitions. [2020-10-13 15:37:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:37:47,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:47,144 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:47,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:37:47,144 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:47,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:47,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1901414942, now seen corresponding path program 1 times [2020-10-13 15:37:47,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:47,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855545664] [2020-10-13 15:37:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:52,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:37:52,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:52,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:37:52,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:52,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:52,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:52,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:52,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:52,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:52,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:52,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:52,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:52,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855545664] [2020-10-13 15:37:52,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:52,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:52,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928300509] [2020-10-13 15:37:52,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:52,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:52,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:52,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:52,235 INFO L87 Difference]: Start difference. First operand 437 states and 684 transitions. Second operand 5 states. [2020-10-13 15:37:52,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:52,897 INFO L93 Difference]: Finished difference Result 864 states and 1360 transitions. [2020-10-13 15:37:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:52,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 15:37:52,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:52,901 INFO L225 Difference]: With dead ends: 864 [2020-10-13 15:37:52,901 INFO L226 Difference]: Without dead ends: 452 [2020-10-13 15:37:52,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-13 15:37:52,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 437. [2020-10-13 15:37:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-13 15:37:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 683 transitions. [2020-10-13 15:37:52,908 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 683 transitions. Word has length 127 [2020-10-13 15:37:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:52,909 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 683 transitions. [2020-10-13 15:37:52,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 683 transitions. [2020-10-13 15:37:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:37:52,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:52,910 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:52,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:37:52,910 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:52,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:52,910 INFO L82 PathProgramCache]: Analyzing trace with hash -647856348, now seen corresponding path program 1 times [2020-10-13 15:37:52,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:52,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023065620] [2020-10-13 15:37:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:53,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:37:53,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 15:37:53,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 15:37:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:37:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:53,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:53,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:53,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:53,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:53,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:53,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:53,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023065620] [2020-10-13 15:37:53,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:53,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:53,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060697195] [2020-10-13 15:37:53,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:53,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:53,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:53,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:53,137 INFO L87 Difference]: Start difference. First operand 437 states and 683 transitions. Second operand 5 states. [2020-10-13 15:37:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:54,088 INFO L93 Difference]: Finished difference Result 954 states and 1500 transitions. [2020-10-13 15:37:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:54,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:37:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:54,091 INFO L225 Difference]: With dead ends: 954 [2020-10-13 15:37:54,091 INFO L226 Difference]: Without dead ends: 542 [2020-10-13 15:37:54,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-10-13 15:37:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 476. [2020-10-13 15:37:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-13 15:37:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 755 transitions. [2020-10-13 15:37:54,099 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 755 transitions. Word has length 128 [2020-10-13 15:37:54,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:54,099 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 755 transitions. [2020-10-13 15:37:54,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:54,100 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 755 transitions. [2020-10-13 15:37:54,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:37:54,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:54,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:54,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:37:54,101 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:54,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:54,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1189804514, now seen corresponding path program 1 times [2020-10-13 15:37:54,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:54,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300740226] [2020-10-13 15:37:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:54,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:54,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:37:54,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 15:37:54,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 15:37:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:37:54,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:54,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:54,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:54,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:54,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300740226] [2020-10-13 15:37:54,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:54,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:54,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552077500] [2020-10-13 15:37:54,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:54,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:54,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:54,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:54,332 INFO L87 Difference]: Start difference. First operand 476 states and 755 transitions. Second operand 5 states. [2020-10-13 15:37:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:55,250 INFO L93 Difference]: Finished difference Result 986 states and 1562 transitions. [2020-10-13 15:37:55,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:55,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:37:55,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:55,253 INFO L225 Difference]: With dead ends: 986 [2020-10-13 15:37:55,254 INFO L226 Difference]: Without dead ends: 535 [2020-10-13 15:37:55,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-13 15:37:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 475. [2020-10-13 15:37:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-13 15:37:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 754 transitions. [2020-10-13 15:37:55,261 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 754 transitions. Word has length 129 [2020-10-13 15:37:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:55,261 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 754 transitions. [2020-10-13 15:37:55,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 754 transitions. [2020-10-13 15:37:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:37:55,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:55,262 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:55,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:37:55,262 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:55,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:55,263 INFO L82 PathProgramCache]: Analyzing trace with hash -857663392, now seen corresponding path program 1 times [2020-10-13 15:37:55,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:55,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763684650] [2020-10-13 15:37:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:55,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:56,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:56,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:37:56,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-10-13 15:37:56,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 15:37:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:56,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:56,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:56,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:56,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:56,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:56,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:56,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:56,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763684650] [2020-10-13 15:37:56,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:56,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:56,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649167934] [2020-10-13 15:37:56,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:56,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:56,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:56,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:56,290 INFO L87 Difference]: Start difference. First operand 475 states and 754 transitions. Second operand 5 states. [2020-10-13 15:37:57,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:57,060 INFO L93 Difference]: Finished difference Result 964 states and 1532 transitions. [2020-10-13 15:37:57,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:57,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:37:57,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:57,065 INFO L225 Difference]: With dead ends: 964 [2020-10-13 15:37:57,065 INFO L226 Difference]: Without dead ends: 514 [2020-10-13 15:37:57,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-13 15:37:57,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 475. [2020-10-13 15:37:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-13 15:37:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 753 transitions. [2020-10-13 15:37:57,072 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 753 transitions. Word has length 129 [2020-10-13 15:37:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:57,073 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 753 transitions. [2020-10-13 15:37:57,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:57,073 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 753 transitions. [2020-10-13 15:37:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:37:57,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:57,074 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:57,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:37:57,074 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:57,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:57,075 INFO L82 PathProgramCache]: Analyzing trace with hash -296781447, now seen corresponding path program 1 times [2020-10-13 15:37:57,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:57,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942697725] [2020-10-13 15:37:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:58,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:58,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:37:58,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:58,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-13 15:37:58,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:37:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:58,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:58,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:58,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:58,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:58,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:58,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:58,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:58,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:58,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:58,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:58,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:58,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:58,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942697725] [2020-10-13 15:37:58,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:58,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:58,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165989026] [2020-10-13 15:37:58,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:58,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:58,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:58,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:58,264 INFO L87 Difference]: Start difference. First operand 475 states and 753 transitions. Second operand 5 states. [2020-10-13 15:37:59,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:59,049 INFO L93 Difference]: Finished difference Result 959 states and 1524 transitions. [2020-10-13 15:37:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:59,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 15:37:59,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:59,051 INFO L225 Difference]: With dead ends: 959 [2020-10-13 15:37:59,052 INFO L226 Difference]: Without dead ends: 509 [2020-10-13 15:37:59,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-10-13 15:37:59,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 475. [2020-10-13 15:37:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-13 15:37:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 752 transitions. [2020-10-13 15:37:59,061 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 752 transitions. Word has length 130 [2020-10-13 15:37:59,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:59,061 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 752 transitions. [2020-10-13 15:37:59,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 752 transitions. [2020-10-13 15:37:59,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:37:59,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:59,062 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:59,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:37:59,063 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:59,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:59,063 INFO L82 PathProgramCache]: Analyzing trace with hash 755552046, now seen corresponding path program 1 times [2020-10-13 15:37:59,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:59,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948072181] [2020-10-13 15:37:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:59,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:04,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:38:04,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:04,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:38:04,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 15:38:04,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:04,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:04,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:04,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:04,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:04,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:04,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:04,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:04,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948072181] [2020-10-13 15:38:04,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:04,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:04,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94252900] [2020-10-13 15:38:04,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:04,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:04,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:04,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:04,175 INFO L87 Difference]: Start difference. First operand 475 states and 752 transitions. Second operand 5 states. [2020-10-13 15:38:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:04,900 INFO L93 Difference]: Finished difference Result 948 states and 1506 transitions. [2020-10-13 15:38:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:04,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 15:38:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:04,903 INFO L225 Difference]: With dead ends: 948 [2020-10-13 15:38:04,903 INFO L226 Difference]: Without dead ends: 498 [2020-10-13 15:38:04,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:04,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-13 15:38:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 478. [2020-10-13 15:38:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-13 15:38:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 755 transitions. [2020-10-13 15:38:04,911 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 755 transitions. Word has length 130 [2020-10-13 15:38:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:04,912 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 755 transitions. [2020-10-13 15:38:04,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 755 transitions. [2020-10-13 15:38:04,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:38:04,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:04,913 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:04,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 15:38:04,913 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:04,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:04,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1622828183, now seen corresponding path program 1 times [2020-10-13 15:38:04,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:04,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319595672] [2020-10-13 15:38:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:06,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:09,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:38:09,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:38:09,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 15:38:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:38:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:10,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:10,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:10,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:10,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:10,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:10,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319595672] [2020-10-13 15:38:10,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:10,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:10,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229997263] [2020-10-13 15:38:10,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:10,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:10,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:10,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:10,029 INFO L87 Difference]: Start difference. First operand 478 states and 755 transitions. Second operand 5 states. [2020-10-13 15:38:10,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:10,816 INFO L93 Difference]: Finished difference Result 969 states and 1533 transitions. [2020-10-13 15:38:10,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:10,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 15:38:10,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:10,820 INFO L225 Difference]: With dead ends: 969 [2020-10-13 15:38:10,820 INFO L226 Difference]: Without dead ends: 516 [2020-10-13 15:38:10,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:10,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-13 15:38:10,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 478. [2020-10-13 15:38:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-13 15:38:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 754 transitions. [2020-10-13 15:38:10,827 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 754 transitions. Word has length 130 [2020-10-13 15:38:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:10,827 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 754 transitions. [2020-10-13 15:38:10,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 754 transitions. [2020-10-13 15:38:10,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:38:10,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:10,829 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:10,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 15:38:10,829 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:10,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:10,829 INFO L82 PathProgramCache]: Analyzing trace with hash 264075261, now seen corresponding path program 1 times [2020-10-13 15:38:10,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:10,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352160735] [2020-10-13 15:38:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:10,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:15,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:38:15,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:38:15,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 15:38:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:38:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:15,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:15,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:15,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:15,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:15,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:15,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:15,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352160735] [2020-10-13 15:38:15,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:15,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:15,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624866214] [2020-10-13 15:38:15,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:15,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:15,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:15,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:15,910 INFO L87 Difference]: Start difference. First operand 478 states and 754 transitions. Second operand 5 states. [2020-10-13 15:38:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:16,734 INFO L93 Difference]: Finished difference Result 969 states and 1531 transitions. [2020-10-13 15:38:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:16,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 15:38:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:16,738 INFO L225 Difference]: With dead ends: 969 [2020-10-13 15:38:16,738 INFO L226 Difference]: Without dead ends: 516 [2020-10-13 15:38:16,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-13 15:38:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 478. [2020-10-13 15:38:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-13 15:38:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 753 transitions. [2020-10-13 15:38:16,748 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 753 transitions. Word has length 130 [2020-10-13 15:38:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:16,749 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 753 transitions. [2020-10-13 15:38:16,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 753 transitions. [2020-10-13 15:38:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:38:16,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:16,750 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:16,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-13 15:38:16,750 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:16,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1415357072, now seen corresponding path program 1 times [2020-10-13 15:38:16,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:16,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352170334] [2020-10-13 15:38:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:16,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:21,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 15:38:21,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:21,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:38:21,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:38:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:38:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:21,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:21,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:21,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:21,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:21,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352170334] [2020-10-13 15:38:21,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:21,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:21,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329926633] [2020-10-13 15:38:21,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:21,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:21,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:21,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:21,837 INFO L87 Difference]: Start difference. First operand 478 states and 753 transitions. Second operand 5 states. [2020-10-13 15:38:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:22,609 INFO L93 Difference]: Finished difference Result 964 states and 1523 transitions. [2020-10-13 15:38:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:22,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 15:38:22,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:22,613 INFO L225 Difference]: With dead ends: 964 [2020-10-13 15:38:22,614 INFO L226 Difference]: Without dead ends: 511 [2020-10-13 15:38:22,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:22,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-10-13 15:38:22,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 478. [2020-10-13 15:38:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-13 15:38:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 752 transitions. [2020-10-13 15:38:22,621 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 752 transitions. Word has length 131 [2020-10-13 15:38:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:22,621 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 752 transitions. [2020-10-13 15:38:22,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 752 transitions. [2020-10-13 15:38:22,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:38:22,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:22,622 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:22,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-13 15:38:22,622 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:22,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:22,623 INFO L82 PathProgramCache]: Analyzing trace with hash 471546372, now seen corresponding path program 1 times [2020-10-13 15:38:22,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:22,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059677700] [2020-10-13 15:38:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 15:38:27,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 15:38:27,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:38:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:38:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:27,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:27,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:27,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:27,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:27,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:27,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:27,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:27,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059677700] [2020-10-13 15:38:27,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:27,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:27,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59882296] [2020-10-13 15:38:27,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:27,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:27,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:27,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:27,726 INFO L87 Difference]: Start difference. First operand 478 states and 752 transitions. Second operand 5 states. [2020-10-13 15:38:28,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:28,535 INFO L93 Difference]: Finished difference Result 964 states and 1521 transitions. [2020-10-13 15:38:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:28,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 15:38:28,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:28,538 INFO L225 Difference]: With dead ends: 964 [2020-10-13 15:38:28,538 INFO L226 Difference]: Without dead ends: 511 [2020-10-13 15:38:28,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-10-13 15:38:28,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 478. [2020-10-13 15:38:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-13 15:38:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 751 transitions. [2020-10-13 15:38:28,545 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 751 transitions. Word has length 131 [2020-10-13 15:38:28,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:28,546 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 751 transitions. [2020-10-13 15:38:28,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:28,546 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 751 transitions. [2020-10-13 15:38:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:38:28,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:28,547 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:28,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-13 15:38:28,547 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:28,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:28,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1754524122, now seen corresponding path program 1 times [2020-10-13 15:38:28,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:28,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058386909] [2020-10-13 15:38:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:28,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking...