/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=BIGGEST --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.07.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:53:10,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:53:10,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:53:10,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:53:10,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:53:10,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:53:10,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:53:10,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:53:10,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:53:10,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:53:10,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:53:10,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:53:10,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:53:10,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:53:10,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:53:10,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:53:10,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:53:10,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:53:10,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:53:10,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:53:10,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:53:10,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:53:10,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:53:10,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:53:10,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:53:10,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:53:10,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:53:10,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:53:10,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:53:10,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:53:10,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:53:10,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:53:10,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:53:10,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:53:10,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:53:10,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:53:10,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:53:10,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:53:10,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:53:10,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:53:10,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:53:10,336 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 [2020-10-12 20:53:10,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:53:10,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:53:10,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:53:10,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:53:10,380 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:53:10,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:53:10,381 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:53:10,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:53:10,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:53:10,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:53:10,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:53:10,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:53:10,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:53:10,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:53:10,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:53:10,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:53:10,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:53:10,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:53:10,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:53:10,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:53:10,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:53:10,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:53:10,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:53:10,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:53:10,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:53:10,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:53:10,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:53:10,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:53:10,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:53:10,385 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:53:10,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:53:10,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:53:10,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:53:10,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:53:10,700 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:53:10,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.07.i.cil-1.c [2020-10-12 20:53:10,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add15c0ba/d5db8a52ffdb4c97906c665ecb899f86/FLAGfe0daf39e [2020-10-12 20:53:11,395 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:53:11,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.07.i.cil-1.c [2020-10-12 20:53:11,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add15c0ba/d5db8a52ffdb4c97906c665ecb899f86/FLAGfe0daf39e [2020-10-12 20:53:11,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add15c0ba/d5db8a52ffdb4c97906c665ecb899f86 [2020-10-12 20:53:11,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:53:11,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:53:11,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:53:11,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:53:11,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:53:11,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:53:11" (1/1) ... [2020-10-12 20:53:11,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3837a877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:11, skipping insertion in model container [2020-10-12 20:53:11,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:53:11" (1/1) ... [2020-10-12 20:53:11,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:53:11,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:53:12,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:53:12,346 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:53:12,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:53:12,538 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:53:12,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:12 WrapperNode [2020-10-12 20:53:12,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:53:12,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:53:12,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:53:12,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:53:12,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:12" (1/1) ... [2020-10-12 20:53:12,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:12" (1/1) ... [2020-10-12 20:53:12,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:12" (1/1) ... [2020-10-12 20:53:12,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:12" (1/1) ... [2020-10-12 20:53:12,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:12" (1/1) ... [2020-10-12 20:53:12,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:12" (1/1) ... [2020-10-12 20:53:12,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:12" (1/1) ... [2020-10-12 20:53:12,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:53:12,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:53:12,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:53:12,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:53:12,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:12" (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 [2020-10-12 20:53:12,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:53:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:53:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:53:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:53:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:53:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:53:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:53:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:53:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:53:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:53:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:53:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:53:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:53:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:53:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:53:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:53:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:53:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:53:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:53:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:53:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:53:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:53:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:53:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:53:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:53:13,401 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:53:14,291 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:53:14,291 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:53:14,320 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:53:14,321 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:53:14,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:14 BoogieIcfgContainer [2020-10-12 20:53:14,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:53:14,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:53:14,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:53:14,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:53:14,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:53:11" (1/3) ... [2020-10-12 20:53:14,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c35810a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:14, skipping insertion in model container [2020-10-12 20:53:14,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:12" (2/3) ... [2020-10-12 20:53:14,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c35810a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:14, skipping insertion in model container [2020-10-12 20:53:14,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:14" (3/3) ... [2020-10-12 20:53:14,333 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.07.i.cil-1.c [2020-10-12 20:53:14,343 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:53:14,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:53:14,365 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:53:14,390 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:53:14,390 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:53:14,390 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:53:14,390 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:53:14,390 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:53:14,391 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:53:14,391 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:53:14,391 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:53:14,412 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-12 20:53:14,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 20:53:14,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:14,422 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] [2020-10-12 20:53:14,423 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:14,429 INFO L82 PathProgramCache]: Analyzing trace with hash 237777211, now seen corresponding path program 1 times [2020-10-12 20:53:14,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:14,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956227040] [2020-10-12 20:53:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:14,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:16,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 20:53:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-12 20:53:16,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:53:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:53:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:16,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:16,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:16,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:53:16,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:16,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:16,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956227040] [2020-10-12 20:53:16,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:16,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:16,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060250935] [2020-10-12 20:53:16,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:16,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:16,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:16,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:16,440 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 5 states. [2020-10-12 20:53:17,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:17,846 INFO L93 Difference]: Finished difference Result 405 states and 682 transitions. [2020-10-12 20:53:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:17,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-12 20:53:17,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:17,864 INFO L225 Difference]: With dead ends: 405 [2020-10-12 20:53:17,865 INFO L226 Difference]: Without dead ends: 236 [2020-10-12 20:53:17,869 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 [2020-10-12 20:53:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-12 20:53:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 161. [2020-10-12 20:53:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-12 20:53:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 250 transitions. [2020-10-12 20:53:17,930 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 250 transitions. Word has length 41 [2020-10-12 20:53:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:17,930 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 250 transitions. [2020-10-12 20:53:17,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 250 transitions. [2020-10-12 20:53:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 20:53:17,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:17,933 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] [2020-10-12 20:53:17,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:53:17,934 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:17,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:17,934 INFO L82 PathProgramCache]: Analyzing trace with hash -637657458, now seen corresponding path program 1 times [2020-10-12 20:53:17,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:17,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628514832] [2020-10-12 20:53:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:18,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:18,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:18,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 20:53:18,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:18,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-12 20:53:18,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:53:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:18,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:18,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:18,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:18,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:18,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:18,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628514832] [2020-10-12 20:53:18,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:18,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:18,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874500488] [2020-10-12 20:53:18,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:18,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:18,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:18,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:18,525 INFO L87 Difference]: Start difference. First operand 161 states and 250 transitions. Second operand 5 states. [2020-10-12 20:53:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:19,376 INFO L93 Difference]: Finished difference Result 355 states and 541 transitions. [2020-10-12 20:53:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:19,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-12 20:53:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:19,384 INFO L225 Difference]: With dead ends: 355 [2020-10-12 20:53:19,385 INFO L226 Difference]: Without dead ends: 228 [2020-10-12 20:53:19,386 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 [2020-10-12 20:53:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-12 20:53:19,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 162. [2020-10-12 20:53:19,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:53:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 251 transitions. [2020-10-12 20:53:19,415 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 251 transitions. Word has length 42 [2020-10-12 20:53:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:19,416 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 251 transitions. [2020-10-12 20:53:19,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 251 transitions. [2020-10-12 20:53:19,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 20:53:19,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:19,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:19,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:53:19,421 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:19,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:19,422 INFO L82 PathProgramCache]: Analyzing trace with hash -271066791, now seen corresponding path program 1 times [2020-10-12 20:53:19,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:19,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082415820] [2020-10-12 20:53:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:19,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:20,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 20:53:20,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:20,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-12 20:53:20,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:53:20,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:53:20,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:20,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:20,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:20,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:53:20,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:20,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:20,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082415820] [2020-10-12 20:53:20,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:20,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:20,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352718710] [2020-10-12 20:53:20,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:20,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:20,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:20,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:20,268 INFO L87 Difference]: Start difference. First operand 162 states and 251 transitions. Second operand 5 states. [2020-10-12 20:53:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:20,957 INFO L93 Difference]: Finished difference Result 306 states and 468 transitions. [2020-10-12 20:53:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:20,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-12 20:53:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:20,960 INFO L225 Difference]: With dead ends: 306 [2020-10-12 20:53:20,960 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 20:53:20,961 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 [2020-10-12 20:53:20,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 20:53:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-12 20:53:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-12 20:53:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 232 transitions. [2020-10-12 20:53:20,972 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 232 transitions. Word has length 47 [2020-10-12 20:53:20,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:20,972 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 232 transitions. [2020-10-12 20:53:20,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 232 transitions. [2020-10-12 20:53:20,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 20:53:20,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:20,975 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] [2020-10-12 20:53:20,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:53:20,975 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:20,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:20,976 INFO L82 PathProgramCache]: Analyzing trace with hash -495950029, now seen corresponding path program 1 times [2020-10-12 20:53:20,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:20,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352313058] [2020-10-12 20:53:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:21,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:21,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 20:53:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-12 20:53:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:53:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:21,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:21,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:21,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:21,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:21,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:21,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352313058] [2020-10-12 20:53:21,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:21,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:21,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336557354] [2020-10-12 20:53:21,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:21,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:21,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:21,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:21,797 INFO L87 Difference]: Start difference. First operand 152 states and 232 transitions. Second operand 5 states. [2020-10-12 20:53:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:22,505 INFO L93 Difference]: Finished difference Result 296 states and 449 transitions. [2020-10-12 20:53:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:22,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-12 20:53:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:22,507 INFO L225 Difference]: With dead ends: 296 [2020-10-12 20:53:22,507 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 20:53:22,508 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 [2020-10-12 20:53:22,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 20:53:22,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-12 20:53:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-12 20:53:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2020-10-12 20:53:22,517 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 54 [2020-10-12 20:53:22,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:22,517 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2020-10-12 20:53:22,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2020-10-12 20:53:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 20:53:22,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:22,519 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] [2020-10-12 20:53:22,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:53:22,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash -556125065, now seen corresponding path program 1 times [2020-10-12 20:53:22,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:22,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387257693] [2020-10-12 20:53:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:22,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:26,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:27,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 20:53:27,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:27,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:53:27,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:27,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:53:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:53:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:27,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:27,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:27,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:53:27,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:27,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:27,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387257693] [2020-10-12 20:53:27,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:27,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:27,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898665505] [2020-10-12 20:53:27,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:27,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:27,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:27,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:27,735 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand 5 states. [2020-10-12 20:53:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:28,420 INFO L93 Difference]: Finished difference Result 296 states and 448 transitions. [2020-10-12 20:53:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:28,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-12 20:53:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:28,425 INFO L225 Difference]: With dead ends: 296 [2020-10-12 20:53:28,425 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 20:53:28,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:28,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 20:53:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 162. [2020-10-12 20:53:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:53:28,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 243 transitions. [2020-10-12 20:53:28,443 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 243 transitions. Word has length 55 [2020-10-12 20:53:28,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:28,444 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 243 transitions. [2020-10-12 20:53:28,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:28,444 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 243 transitions. [2020-10-12 20:53:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 20:53:28,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:28,447 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] [2020-10-12 20:53:28,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:53:28,448 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:28,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1471564928, now seen corresponding path program 1 times [2020-10-12 20:53:28,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:28,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281976210] [2020-10-12 20:53:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:28,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 20:53:29,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-12 20:53:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:53:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:53:29,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:29,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:29,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:53:29,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:29,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281976210] [2020-10-12 20:53:29,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:29,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:29,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520575269] [2020-10-12 20:53:29,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:29,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:29,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:29,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:29,166 INFO L87 Difference]: Start difference. First operand 162 states and 243 transitions. Second operand 5 states. [2020-10-12 20:53:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:29,838 INFO L93 Difference]: Finished difference Result 294 states and 445 transitions. [2020-10-12 20:53:29,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:29,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-12 20:53:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:29,841 INFO L225 Difference]: With dead ends: 294 [2020-10-12 20:53:29,841 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 20:53:29,842 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 [2020-10-12 20:53:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 20:53:29,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2020-10-12 20:53:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:53:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 242 transitions. [2020-10-12 20:53:29,848 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 242 transitions. Word has length 55 [2020-10-12 20:53:29,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:29,849 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 242 transitions. [2020-10-12 20:53:29,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:29,849 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 242 transitions. [2020-10-12 20:53:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 20:53:29,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:29,850 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] [2020-10-12 20:53:29,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:53:29,851 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:29,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:29,851 INFO L82 PathProgramCache]: Analyzing trace with hash -171966527, now seen corresponding path program 1 times [2020-10-12 20:53:29,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:29,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638564307] [2020-10-12 20:53:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:29,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:30,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 20:53:30,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-12 20:53:30,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:53:30,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:30,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:30,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:30,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:30,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:30,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:53:30,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:30,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:30,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638564307] [2020-10-12 20:53:30,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:30,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:30,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006683151] [2020-10-12 20:53:30,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:30,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:30,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:30,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:30,452 INFO L87 Difference]: Start difference. First operand 162 states and 242 transitions. Second operand 5 states. [2020-10-12 20:53:31,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:31,130 INFO L93 Difference]: Finished difference Result 293 states and 443 transitions. [2020-10-12 20:53:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:31,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-12 20:53:31,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:31,132 INFO L225 Difference]: With dead ends: 293 [2020-10-12 20:53:31,132 INFO L226 Difference]: Without dead ends: 166 [2020-10-12 20:53:31,133 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 [2020-10-12 20:53:31,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-12 20:53:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2020-10-12 20:53:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:53:31,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 241 transitions. [2020-10-12 20:53:31,142 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 241 transitions. Word has length 55 [2020-10-12 20:53:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:31,142 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 241 transitions. [2020-10-12 20:53:31,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 241 transitions. [2020-10-12 20:53:31,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 20:53:31,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:31,144 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] [2020-10-12 20:53:31,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:53:31,144 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1525299006, now seen corresponding path program 1 times [2020-10-12 20:53:31,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:31,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281821202] [2020-10-12 20:53:31,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:31,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:36,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:36,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 20:53:36,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:53:36,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:53:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:53:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:36,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:36,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:36,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:36,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:36,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:36,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:36,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281821202] [2020-10-12 20:53:36,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:36,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:53:36,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677051633] [2020-10-12 20:53:36,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:53:36,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:36,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:53:36,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:53:36,416 INFO L87 Difference]: Start difference. First operand 162 states and 241 transitions. Second operand 8 states. [2020-10-12 20:53:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:37,897 INFO L93 Difference]: Finished difference Result 435 states and 659 transitions. [2020-10-12 20:53:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:53:37,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 20:53:37,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:37,900 INFO L225 Difference]: With dead ends: 435 [2020-10-12 20:53:37,900 INFO L226 Difference]: Without dead ends: 308 [2020-10-12 20:53:37,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:53:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-12 20:53:37,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 262. [2020-10-12 20:53:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-12 20:53:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 401 transitions. [2020-10-12 20:53:37,918 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 401 transitions. Word has length 56 [2020-10-12 20:53:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:37,918 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 401 transitions. [2020-10-12 20:53:37,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:53:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 401 transitions. [2020-10-12 20:53:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 20:53:37,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:37,919 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] [2020-10-12 20:53:37,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:53:37,920 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:37,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1380545738, now seen corresponding path program 1 times [2020-10-12 20:53:37,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:37,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129301840] [2020-10-12 20:53:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:38,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:38,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:38,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 20:53:38,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-10-12 20:53:38,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:53:38,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:38,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:38,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:38,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:38,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:38,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:38,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:38,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:38,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129301840] [2020-10-12 20:53:38,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:38,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:38,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319306389] [2020-10-12 20:53:38,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:38,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:38,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:38,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:38,812 INFO L87 Difference]: Start difference. First operand 262 states and 401 transitions. Second operand 5 states. [2020-10-12 20:53:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:39,693 INFO L93 Difference]: Finished difference Result 571 states and 882 transitions. [2020-10-12 20:53:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:39,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-12 20:53:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:39,701 INFO L225 Difference]: With dead ends: 571 [2020-10-12 20:53:39,702 INFO L226 Difference]: Without dead ends: 444 [2020-10-12 20:53:39,702 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 [2020-10-12 20:53:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-12 20:53:39,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 318. [2020-10-12 20:53:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-12 20:53:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 501 transitions. [2020-10-12 20:53:39,724 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 501 transitions. Word has length 58 [2020-10-12 20:53:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:39,724 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 501 transitions. [2020-10-12 20:53:39,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 501 transitions. [2020-10-12 20:53:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 20:53:39,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:39,728 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] [2020-10-12 20:53:39,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:53:39,729 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:39,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:39,729 INFO L82 PathProgramCache]: Analyzing trace with hash 428428511, now seen corresponding path program 1 times [2020-10-12 20:53:39,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:39,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553275537] [2020-10-12 20:53:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:40,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 20:53:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-12 20:53:40,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:53:40,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:40,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:40,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:40,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:40,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:40,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:40,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:40,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:40,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:40,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:40,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553275537] [2020-10-12 20:53:40,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:40,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:40,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597900349] [2020-10-12 20:53:40,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:40,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:40,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:40,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:40,348 INFO L87 Difference]: Start difference. First operand 318 states and 501 transitions. Second operand 5 states. [2020-10-12 20:53:41,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:41,251 INFO L93 Difference]: Finished difference Result 591 states and 917 transitions. [2020-10-12 20:53:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:41,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-12 20:53:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:41,255 INFO L225 Difference]: With dead ends: 591 [2020-10-12 20:53:41,255 INFO L226 Difference]: Without dead ends: 436 [2020-10-12 20:53:41,256 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 [2020-10-12 20:53:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-12 20:53:41,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 320. [2020-10-12 20:53:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-12 20:53:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 503 transitions. [2020-10-12 20:53:41,283 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 503 transitions. Word has length 59 [2020-10-12 20:53:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:41,285 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 503 transitions. [2020-10-12 20:53:41,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 503 transitions. [2020-10-12 20:53:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:53:41,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:41,287 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] [2020-10-12 20:53:41,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:53:41,288 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:41,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1202588248, now seen corresponding path program 1 times [2020-10-12 20:53:41,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:41,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081959387] [2020-10-12 20:53:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:41,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:41,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:53:41,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:41,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-12 20:53:41,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:53:41,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:41,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:41,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:41,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:41,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:41,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:41,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:41,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081959387] [2020-10-12 20:53:41,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:41,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:41,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714967543] [2020-10-12 20:53:41,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:41,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:41,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:41,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:41,777 INFO L87 Difference]: Start difference. First operand 320 states and 503 transitions. Second operand 5 states. [2020-10-12 20:53:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:42,520 INFO L93 Difference]: Finished difference Result 631 states and 989 transitions. [2020-10-12 20:53:42,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:42,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:53:42,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:42,523 INFO L225 Difference]: With dead ends: 631 [2020-10-12 20:53:42,523 INFO L226 Difference]: Without dead ends: 346 [2020-10-12 20:53:42,525 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 [2020-10-12 20:53:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-12 20:53:42,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 306. [2020-10-12 20:53:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-12 20:53:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 477 transitions. [2020-10-12 20:53:42,537 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 477 transitions. Word has length 64 [2020-10-12 20:53:42,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:42,537 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 477 transitions. [2020-10-12 20:53:42,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:42,538 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 477 transitions. [2020-10-12 20:53:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:53:42,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:42,545 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:53:42,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:53:42,545 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:42,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:42,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2080998156, now seen corresponding path program 1 times [2020-10-12 20:53:42,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:42,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819654225] [2020-10-12 20:53:42,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:42,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:47,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:47,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:53:47,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:47,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:53:47,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:53:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:53:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:53:47,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:47,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:47,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:47,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:47,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:47,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:47,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:47,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819654225] [2020-10-12 20:53:47,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:47,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:53:47,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383723720] [2020-10-12 20:53:47,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:53:47,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:47,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:53:47,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:47,660 INFO L87 Difference]: Start difference. First operand 306 states and 477 transitions. Second operand 6 states. [2020-10-12 20:53:48,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:48,535 INFO L93 Difference]: Finished difference Result 502 states and 779 transitions. [2020-10-12 20:53:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:53:48,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-12 20:53:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:48,539 INFO L225 Difference]: With dead ends: 502 [2020-10-12 20:53:48,539 INFO L226 Difference]: Without dead ends: 323 [2020-10-12 20:53:48,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:53:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-12 20:53:48,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 313. [2020-10-12 20:53:48,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-12 20:53:48,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 485 transitions. [2020-10-12 20:53:48,556 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 485 transitions. Word has length 69 [2020-10-12 20:53:48,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:48,556 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 485 transitions. [2020-10-12 20:53:48,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:53:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 485 transitions. [2020-10-12 20:53:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:53:48,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:48,559 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:53:48,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:53:48,560 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:48,560 INFO L82 PathProgramCache]: Analyzing trace with hash -414801760, now seen corresponding path program 1 times [2020-10-12 20:53:48,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:48,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463889631] [2020-10-12 20:53:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:53,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:53:53,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4982 [2020-10-12 20:53:53,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:53,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:53:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:53,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:53,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:53,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:53,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:53,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:53,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463889631] [2020-10-12 20:53:53,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:53,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:53,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765360007] [2020-10-12 20:53:53,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:53,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:53,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:53,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:53,650 INFO L87 Difference]: Start difference. First operand 313 states and 485 transitions. Second operand 5 states. [2020-10-12 20:53:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:54,374 INFO L93 Difference]: Finished difference Result 504 states and 779 transitions. [2020-10-12 20:53:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:54,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-12 20:53:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:54,377 INFO L225 Difference]: With dead ends: 504 [2020-10-12 20:53:54,377 INFO L226 Difference]: Without dead ends: 317 [2020-10-12 20:53:54,378 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 [2020-10-12 20:53:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-12 20:53:54,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 313. [2020-10-12 20:53:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-12 20:53:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 484 transitions. [2020-10-12 20:53:54,390 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 484 transitions. Word has length 69 [2020-10-12 20:53:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:54,390 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 484 transitions. [2020-10-12 20:53:54,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 484 transitions. [2020-10-12 20:53:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:53:54,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:54,392 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:53:54,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:53:54,392 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:54,392 INFO L82 PathProgramCache]: Analyzing trace with hash 113704563, now seen corresponding path program 1 times [2020-10-12 20:53:54,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:54,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849127038] [2020-10-12 20:53:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:54,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:56,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:57,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 20:53:57,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2816 [2020-10-12 20:53:57,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:53:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:57,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:57,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:57,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:57,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:57,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849127038] [2020-10-12 20:53:57,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:57,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:57,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801048063] [2020-10-12 20:53:57,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:57,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:57,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:57,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:57,303 INFO L87 Difference]: Start difference. First operand 313 states and 484 transitions. Second operand 5 states. [2020-10-12 20:53:57,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:57,964 INFO L93 Difference]: Finished difference Result 504 states and 778 transitions. [2020-10-12 20:53:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:57,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-12 20:53:57,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:57,967 INFO L225 Difference]: With dead ends: 504 [2020-10-12 20:53:57,967 INFO L226 Difference]: Without dead ends: 317 [2020-10-12 20:53:57,969 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 [2020-10-12 20:53:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-12 20:53:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 313. [2020-10-12 20:53:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-12 20:53:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 483 transitions. [2020-10-12 20:53:57,983 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 483 transitions. Word has length 70 [2020-10-12 20:53:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:57,984 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 483 transitions. [2020-10-12 20:53:57,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 483 transitions. [2020-10-12 20:53:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:53:57,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:57,985 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:53:57,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:53:57,986 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:57,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1720200571, now seen corresponding path program 1 times [2020-10-12 20:53:57,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:57,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854834625] [2020-10-12 20:53:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:58,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:01,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:01,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:54:01,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3212 [2020-10-12 20:54:01,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:54:01,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:01,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:01,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:01,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:01,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:01,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:01,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:01,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854834625] [2020-10-12 20:54:01,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:01,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:01,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253705029] [2020-10-12 20:54:01,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:01,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:01,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:01,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:01,278 INFO L87 Difference]: Start difference. First operand 313 states and 483 transitions. Second operand 5 states. [2020-10-12 20:54:02,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:02,010 INFO L93 Difference]: Finished difference Result 504 states and 777 transitions. [2020-10-12 20:54:02,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:02,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-12 20:54:02,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:02,014 INFO L225 Difference]: With dead ends: 504 [2020-10-12 20:54:02,014 INFO L226 Difference]: Without dead ends: 317 [2020-10-12 20:54:02,016 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 [2020-10-12 20:54:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-12 20:54:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 313. [2020-10-12 20:54:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-12 20:54:02,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 482 transitions. [2020-10-12 20:54:02,027 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 482 transitions. Word has length 71 [2020-10-12 20:54:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:02,028 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 482 transitions. [2020-10-12 20:54:02,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 482 transitions. [2020-10-12 20:54:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:54:02,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:02,030 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] [2020-10-12 20:54:02,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:54:02,031 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:02,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:02,032 INFO L82 PathProgramCache]: Analyzing trace with hash 740008964, now seen corresponding path program 1 times [2020-10-12 20:54:02,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:02,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720660333] [2020-10-12 20:54:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:02,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:02,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:02,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:54:02,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:02,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-12 20:54:02,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:54:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:54:02,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:02,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:02,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:02,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:02,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:02,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:02,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:02,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:02,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:02,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:54:02,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720660333] [2020-10-12 20:54:02,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:02,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:02,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973008028] [2020-10-12 20:54:02,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:02,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:02,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:02,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:02,915 INFO L87 Difference]: Start difference. First operand 313 states and 482 transitions. Second operand 5 states. [2020-10-12 20:54:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:03,781 INFO L93 Difference]: Finished difference Result 583 states and 897 transitions. [2020-10-12 20:54:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:03,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-12 20:54:03,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:03,784 INFO L225 Difference]: With dead ends: 583 [2020-10-12 20:54:03,785 INFO L226 Difference]: Without dead ends: 425 [2020-10-12 20:54:03,785 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 [2020-10-12 20:54:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-12 20:54:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 341. [2020-10-12 20:54:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-12 20:54:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 532 transitions. [2020-10-12 20:54:03,797 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 532 transitions. Word has length 71 [2020-10-12 20:54:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:03,797 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 532 transitions. [2020-10-12 20:54:03,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 532 transitions. [2020-10-12 20:54:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:54:03,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:03,799 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] [2020-10-12 20:54:03,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:54:03,799 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:03,799 INFO L82 PathProgramCache]: Analyzing trace with hash -896101946, now seen corresponding path program 1 times [2020-10-12 20:54:03,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:03,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918248082] [2020-10-12 20:54:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:08,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:08,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 20:54:08,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:54:08,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:54:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:08,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:08,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:08,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:08,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:08,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:08,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:54:08,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918248082] [2020-10-12 20:54:08,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:08,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:08,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767225929] [2020-10-12 20:54:08,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:08,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:08,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:08,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:08,889 INFO L87 Difference]: Start difference. First operand 341 states and 532 transitions. Second operand 5 states. [2020-10-12 20:54:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:09,584 INFO L93 Difference]: Finished difference Result 575 states and 889 transitions. [2020-10-12 20:54:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:09,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 20:54:09,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:09,589 INFO L225 Difference]: With dead ends: 575 [2020-10-12 20:54:09,589 INFO L226 Difference]: Without dead ends: 379 [2020-10-12 20:54:09,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-12 20:54:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 350. [2020-10-12 20:54:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-12 20:54:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 541 transitions. [2020-10-12 20:54:09,602 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 541 transitions. Word has length 72 [2020-10-12 20:54:09,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:09,603 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 541 transitions. [2020-10-12 20:54:09,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 541 transitions. [2020-10-12 20:54:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:54:09,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:09,605 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] [2020-10-12 20:54:09,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:54:09,605 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:09,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:09,605 INFO L82 PathProgramCache]: Analyzing trace with hash 2046624997, now seen corresponding path program 1 times [2020-10-12 20:54:09,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:09,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253810836] [2020-10-12 20:54:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:09,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:09,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:10,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:10,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 20:54:10,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:10,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-12 20:54:10,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:54:10,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:10,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:10,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:10,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:10,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:10,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:54:10,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253810836] [2020-10-12 20:54:10,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:10,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:10,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941663082] [2020-10-12 20:54:10,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:10,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:10,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:10,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:10,133 INFO L87 Difference]: Start difference. First operand 350 states and 541 transitions. Second operand 5 states. [2020-10-12 20:54:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:10,741 INFO L93 Difference]: Finished difference Result 574 states and 883 transitions. [2020-10-12 20:54:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:10,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 20:54:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:10,744 INFO L225 Difference]: With dead ends: 574 [2020-10-12 20:54:10,745 INFO L226 Difference]: Without dead ends: 379 [2020-10-12 20:54:10,746 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 [2020-10-12 20:54:10,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-12 20:54:10,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 350. [2020-10-12 20:54:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-12 20:54:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 539 transitions. [2020-10-12 20:54:10,759 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 539 transitions. Word has length 72 [2020-10-12 20:54:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:10,759 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 539 transitions. [2020-10-12 20:54:10,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:10,759 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 539 transitions. [2020-10-12 20:54:10,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:54:10,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:10,761 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] [2020-10-12 20:54:10,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:54:10,761 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:10,761 INFO L82 PathProgramCache]: Analyzing trace with hash -511943408, now seen corresponding path program 1 times [2020-10-12 20:54:10,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:10,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112837941] [2020-10-12 20:54:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:10,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:11,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 20:54:11,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:11,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-12 20:54:11,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:54:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:54:11,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:11,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:11,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:11,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:11,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:11,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:11,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:11,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:11,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:11,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:54:11,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112837941] [2020-10-12 20:54:11,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:11,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:11,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411786456] [2020-10-12 20:54:11,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:11,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:11,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:11,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:11,194 INFO L87 Difference]: Start difference. First operand 350 states and 539 transitions. Second operand 5 states. [2020-10-12 20:54:12,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:12,179 INFO L93 Difference]: Finished difference Result 737 states and 1140 transitions. [2020-10-12 20:54:12,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:12,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 20:54:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:12,183 INFO L225 Difference]: With dead ends: 737 [2020-10-12 20:54:12,183 INFO L226 Difference]: Without dead ends: 542 [2020-10-12 20:54:12,184 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 [2020-10-12 20:54:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-10-12 20:54:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 380. [2020-10-12 20:54:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-12 20:54:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 591 transitions. [2020-10-12 20:54:12,198 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 591 transitions. Word has length 72 [2020-10-12 20:54:12,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:12,198 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 591 transitions. [2020-10-12 20:54:12,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 591 transitions. [2020-10-12 20:54:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:54:12,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:12,200 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] [2020-10-12 20:54:12,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:54:12,201 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:12,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:12,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1300674682, now seen corresponding path program 1 times [2020-10-12 20:54:12,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:12,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67060192] [2020-10-12 20:54:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:12,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:12,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:54:12,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-12 20:54:12,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:54:12,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:12,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:12,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:12,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:12,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:12,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:12,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:12,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:12,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:54:12,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67060192] [2020-10-12 20:54:12,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:12,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:12,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795649969] [2020-10-12 20:54:12,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:12,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:12,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:12,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:12,703 INFO L87 Difference]: Start difference. First operand 380 states and 591 transitions. Second operand 5 states. [2020-10-12 20:54:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:13,334 INFO L93 Difference]: Finished difference Result 603 states and 931 transitions. [2020-10-12 20:54:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:13,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:54:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:13,338 INFO L225 Difference]: With dead ends: 603 [2020-10-12 20:54:13,338 INFO L226 Difference]: Without dead ends: 407 [2020-10-12 20:54:13,339 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 [2020-10-12 20:54:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-12 20:54:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 380. [2020-10-12 20:54:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-12 20:54:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 589 transitions. [2020-10-12 20:54:13,353 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 589 transitions. Word has length 73 [2020-10-12 20:54:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:13,353 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 589 transitions. [2020-10-12 20:54:13,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 589 transitions. [2020-10-12 20:54:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:54:13,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:13,355 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] [2020-10-12 20:54:13,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:54:13,355 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:13,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:13,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1890807129, now seen corresponding path program 1 times [2020-10-12 20:54:13,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:13,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813512684] [2020-10-12 20:54:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:13,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:13,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:54:13,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:13,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-12 20:54:13,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:13,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:13,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:54:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:13,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:13,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:13,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:13,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:13,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:54:13,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813512684] [2020-10-12 20:54:13,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:13,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:13,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954787682] [2020-10-12 20:54:13,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:13,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:13,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:13,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:13,784 INFO L87 Difference]: Start difference. First operand 380 states and 589 transitions. Second operand 5 states. [2020-10-12 20:54:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:14,425 INFO L93 Difference]: Finished difference Result 760 states and 1182 transitions. [2020-10-12 20:54:14,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:14,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:54:14,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:14,432 INFO L225 Difference]: With dead ends: 760 [2020-10-12 20:54:14,432 INFO L226 Difference]: Without dead ends: 405 [2020-10-12 20:54:14,433 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 [2020-10-12 20:54:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-12 20:54:14,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 380. [2020-10-12 20:54:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-12 20:54:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 587 transitions. [2020-10-12 20:54:14,447 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 587 transitions. Word has length 73 [2020-10-12 20:54:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:14,447 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 587 transitions. [2020-10-12 20:54:14,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:14,447 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 587 transitions. [2020-10-12 20:54:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:54:14,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:14,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:14,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:54:14,449 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:14,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:14,450 INFO L82 PathProgramCache]: Analyzing trace with hash 890618898, now seen corresponding path program 1 times [2020-10-12 20:54:14,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:14,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380550836] [2020-10-12 20:54:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:14,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:19,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:54:19,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:54:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:54:19,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:54:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:54:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:19,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:19,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:19,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:19,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:19,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:19,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:54:19,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380550836] [2020-10-12 20:54:19,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:19,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:19,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355963482] [2020-10-12 20:54:19,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:19,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:19,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:19,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:19,592 INFO L87 Difference]: Start difference. First operand 380 states and 587 transitions. Second operand 5 states. [2020-10-12 20:54:20,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:20,437 INFO L93 Difference]: Finished difference Result 762 states and 1169 transitions. [2020-10-12 20:54:20,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:20,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:54:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:20,442 INFO L225 Difference]: With dead ends: 762 [2020-10-12 20:54:20,442 INFO L226 Difference]: Without dead ends: 556 [2020-10-12 20:54:20,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:20,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-10-12 20:54:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 396. [2020-10-12 20:54:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-12 20:54:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 609 transitions. [2020-10-12 20:54:20,457 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 609 transitions. Word has length 73 [2020-10-12 20:54:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:20,457 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 609 transitions. [2020-10-12 20:54:20,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 609 transitions. [2020-10-12 20:54:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:54:20,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:20,459 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:54:20,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:54:20,460 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:20,460 INFO L82 PathProgramCache]: Analyzing trace with hash -461621455, now seen corresponding path program 1 times [2020-10-12 20:54:20,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:20,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003700977] [2020-10-12 20:54:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:20,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:21,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:23,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:54:23,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:23,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2530 [2020-10-12 20:54:23,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:54:23,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:23,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:23,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:23,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:23,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:23,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003700977] [2020-10-12 20:54:23,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:23,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:23,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331142296] [2020-10-12 20:54:23,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:23,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:23,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:23,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:23,065 INFO L87 Difference]: Start difference. First operand 396 states and 609 transitions. Second operand 5 states. [2020-10-12 20:54:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:23,610 INFO L93 Difference]: Finished difference Result 640 states and 983 transitions. [2020-10-12 20:54:23,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:23,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:54:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:23,613 INFO L225 Difference]: With dead ends: 640 [2020-10-12 20:54:23,613 INFO L226 Difference]: Without dead ends: 399 [2020-10-12 20:54:23,614 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 [2020-10-12 20:54:23,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-12 20:54:23,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 396. [2020-10-12 20:54:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-12 20:54:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 608 transitions. [2020-10-12 20:54:23,628 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 608 transitions. Word has length 73 [2020-10-12 20:54:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:23,628 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 608 transitions. [2020-10-12 20:54:23,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 608 transitions. [2020-10-12 20:54:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:54:23,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:23,630 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] [2020-10-12 20:54:23,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:54:23,630 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:23,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:23,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1465335169, now seen corresponding path program 1 times [2020-10-12 20:54:23,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:23,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562894907] [2020-10-12 20:54:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:23,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:23,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:54:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 20:54:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:54:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:23,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:23,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:23,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:23,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562894907] [2020-10-12 20:54:23,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:23,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:23,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469101831] [2020-10-12 20:54:23,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:23,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:23,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:23,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:23,902 INFO L87 Difference]: Start difference. First operand 396 states and 608 transitions. Second operand 5 states. [2020-10-12 20:54:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:24,792 INFO L93 Difference]: Finished difference Result 800 states and 1232 transitions. [2020-10-12 20:54:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:24,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:54:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:24,797 INFO L225 Difference]: With dead ends: 800 [2020-10-12 20:54:24,797 INFO L226 Difference]: Without dead ends: 588 [2020-10-12 20:54:24,798 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 [2020-10-12 20:54:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-12 20:54:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 428. [2020-10-12 20:54:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-12 20:54:24,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 660 transitions. [2020-10-12 20:54:24,812 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 660 transitions. Word has length 80 [2020-10-12 20:54:24,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:24,813 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 660 transitions. [2020-10-12 20:54:24,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:24,813 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 660 transitions. [2020-10-12 20:54:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:54:24,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:24,814 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] [2020-10-12 20:54:24,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:54:24,815 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:24,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1537721727, now seen corresponding path program 1 times [2020-10-12 20:54:24,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:24,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870586903] [2020-10-12 20:54:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:24,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:25,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:54:25,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-12 20:54:25,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:54:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:25,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:25,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:25,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:25,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:25,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:25,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870586903] [2020-10-12 20:54:25,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:25,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:25,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156008203] [2020-10-12 20:54:25,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:25,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:25,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:25,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:25,461 INFO L87 Difference]: Start difference. First operand 428 states and 660 transitions. Second operand 5 states. [2020-10-12 20:54:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:26,235 INFO L93 Difference]: Finished difference Result 937 states and 1454 transitions. [2020-10-12 20:54:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:26,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:54:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:26,238 INFO L225 Difference]: With dead ends: 937 [2020-10-12 20:54:26,238 INFO L226 Difference]: Without dead ends: 534 [2020-10-12 20:54:26,239 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 [2020-10-12 20:54:26,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-10-12 20:54:26,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 476. [2020-10-12 20:54:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-12 20:54:26,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 744 transitions. [2020-10-12 20:54:26,253 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 744 transitions. Word has length 80 [2020-10-12 20:54:26,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:26,254 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 744 transitions. [2020-10-12 20:54:26,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:26,254 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 744 transitions. [2020-10-12 20:54:26,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:54:26,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:26,256 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] [2020-10-12 20:54:26,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:54:26,256 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:26,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1894533686, now seen corresponding path program 1 times [2020-10-12 20:54:26,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:26,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626603587] [2020-10-12 20:54:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:26,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:26,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:26,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:26,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:54:26,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:26,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-12 20:54:26,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:26,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:54:26,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:26,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:26,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:26,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:26,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:26,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:26,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:26,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:26,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:26,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:26,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626603587] [2020-10-12 20:54:26,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:26,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:26,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164925798] [2020-10-12 20:54:26,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:26,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:26,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:26,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:26,542 INFO L87 Difference]: Start difference. First operand 476 states and 744 transitions. Second operand 5 states. [2020-10-12 20:54:27,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:27,400 INFO L93 Difference]: Finished difference Result 880 states and 1369 transitions. [2020-10-12 20:54:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:27,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:54:27,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:27,405 INFO L225 Difference]: With dead ends: 880 [2020-10-12 20:54:27,405 INFO L226 Difference]: Without dead ends: 628 [2020-10-12 20:54:27,406 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 [2020-10-12 20:54:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-12 20:54:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 504. [2020-10-12 20:54:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-12 20:54:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 796 transitions. [2020-10-12 20:54:27,423 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 796 transitions. Word has length 81 [2020-10-12 20:54:27,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:27,423 INFO L479 AbstractCegarLoop]: Abstraction has 504 states and 796 transitions. [2020-10-12 20:54:27,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 796 transitions. [2020-10-12 20:54:27,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:54:27,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:27,425 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] [2020-10-12 20:54:27,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:54:27,426 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:27,427 INFO L82 PathProgramCache]: Analyzing trace with hash 839608221, now seen corresponding path program 1 times [2020-10-12 20:54:27,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:27,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892886104] [2020-10-12 20:54:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:27,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:54:27,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:27,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-12 20:54:27,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:54:27,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:27,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:27,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:27,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:27,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892886104] [2020-10-12 20:54:27,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:27,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:27,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713087400] [2020-10-12 20:54:27,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:27,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:27,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:27,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:27,753 INFO L87 Difference]: Start difference. First operand 504 states and 796 transitions. Second operand 5 states. [2020-10-12 20:54:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:28,603 INFO L93 Difference]: Finished difference Result 1107 states and 1740 transitions. [2020-10-12 20:54:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:28,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-12 20:54:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:28,606 INFO L225 Difference]: With dead ends: 1107 [2020-10-12 20:54:28,607 INFO L226 Difference]: Without dead ends: 628 [2020-10-12 20:54:28,608 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 [2020-10-12 20:54:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-12 20:54:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 524. [2020-10-12 20:54:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-12 20:54:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 834 transitions. [2020-10-12 20:54:28,624 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 834 transitions. Word has length 86 [2020-10-12 20:54:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:28,624 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 834 transitions. [2020-10-12 20:54:28,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 834 transitions. [2020-10-12 20:54:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:54:28,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:28,626 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:54:28,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:54:28,627 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:28,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1653806746, now seen corresponding path program 1 times [2020-10-12 20:54:28,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:28,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137610349] [2020-10-12 20:54:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:28,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:29,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:29,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:32,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:32,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:54:32,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4019 [2020-10-12 20:54:32,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 20:54:32,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:32,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:32,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:32,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:32,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:32,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137610349] [2020-10-12 20:54:32,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:32,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:32,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271651989] [2020-10-12 20:54:32,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:32,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:32,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:32,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:32,741 INFO L87 Difference]: Start difference. First operand 524 states and 834 transitions. Second operand 5 states. [2020-10-12 20:54:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:33,336 INFO L93 Difference]: Finished difference Result 863 states and 1361 transitions. [2020-10-12 20:54:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:33,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-12 20:54:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:33,340 INFO L225 Difference]: With dead ends: 863 [2020-10-12 20:54:33,340 INFO L226 Difference]: Without dead ends: 558 [2020-10-12 20:54:33,342 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 [2020-10-12 20:54:33,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-10-12 20:54:33,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 524. [2020-10-12 20:54:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-12 20:54:33,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 832 transitions. [2020-10-12 20:54:33,359 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 832 transitions. Word has length 87 [2020-10-12 20:54:33,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:33,359 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 832 transitions. [2020-10-12 20:54:33,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 832 transitions. [2020-10-12 20:54:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:54:33,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:33,361 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] [2020-10-12 20:54:33,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:54:33,361 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:33,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:33,361 INFO L82 PathProgramCache]: Analyzing trace with hash 251043747, now seen corresponding path program 1 times [2020-10-12 20:54:33,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:33,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289525698] [2020-10-12 20:54:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:33,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:33,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:33,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:33,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:54:33,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:33,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 20:54:33,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:33,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:33,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:33,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:54:33,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:33,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:33,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:33,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:33,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:33,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289525698] [2020-10-12 20:54:33,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:33,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:33,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955239400] [2020-10-12 20:54:33,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:33,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:33,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:33,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:33,678 INFO L87 Difference]: Start difference. First operand 524 states and 832 transitions. Second operand 5 states. [2020-10-12 20:54:34,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:34,476 INFO L93 Difference]: Finished difference Result 1117 states and 1759 transitions. [2020-10-12 20:54:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:34,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-12 20:54:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:34,488 INFO L225 Difference]: With dead ends: 1117 [2020-10-12 20:54:34,488 INFO L226 Difference]: Without dead ends: 618 [2020-10-12 20:54:34,491 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 [2020-10-12 20:54:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-12 20:54:34,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 524. [2020-10-12 20:54:34,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-12 20:54:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 832 transitions. [2020-10-12 20:54:34,505 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 832 transitions. Word has length 87 [2020-10-12 20:54:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:34,506 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 832 transitions. [2020-10-12 20:54:34,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 832 transitions. [2020-10-12 20:54:34,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:54:34,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:34,508 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:54:34,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:54:34,508 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:34,508 INFO L82 PathProgramCache]: Analyzing trace with hash -2104830043, now seen corresponding path program 1 times [2020-10-12 20:54:34,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:34,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830372553] [2020-10-12 20:54:34,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:34,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:38,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:54:38,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3876 [2020-10-12 20:54:38,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:54:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:38,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:38,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:38,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:38,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:54:38,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 20:54:38,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830372553] [2020-10-12 20:54:38,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:38,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:38,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301218050] [2020-10-12 20:54:38,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:38,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:38,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:38,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:38,515 INFO L87 Difference]: Start difference. First operand 524 states and 832 transitions. Second operand 5 states. [2020-10-12 20:54:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:39,179 INFO L93 Difference]: Finished difference Result 1526 states and 2434 transitions. [2020-10-12 20:54:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:39,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:54:39,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:39,184 INFO L225 Difference]: With dead ends: 1526 [2020-10-12 20:54:39,185 INFO L226 Difference]: Without dead ends: 1027 [2020-10-12 20:54:39,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-10-12 20:54:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1025. [2020-10-12 20:54:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-10-12 20:54:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1612 transitions. [2020-10-12 20:54:39,220 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1612 transitions. Word has length 88 [2020-10-12 20:54:39,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:39,220 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 1612 transitions. [2020-10-12 20:54:39,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1612 transitions. [2020-10-12 20:54:39,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:54:39,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:39,223 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:54:39,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:54:39,223 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:39,223 INFO L82 PathProgramCache]: Analyzing trace with hash 651797223, now seen corresponding path program 1 times [2020-10-12 20:54:39,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:39,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912477166] [2020-10-12 20:54:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:39,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:39,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:39,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:42,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:42,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:54:42,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:42,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3188 [2020-10-12 20:54:42,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:42,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:42,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:54:42,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:54:42,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:42,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:42,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:42,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:42,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:54:42,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:42,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:42,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:42,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:54:42,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912477166] [2020-10-12 20:54:42,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:42,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:42,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480980532] [2020-10-12 20:54:42,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:42,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:42,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:42,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:42,523 INFO L87 Difference]: Start difference. First operand 1025 states and 1612 transitions. Second operand 5 states. [2020-10-12 20:54:43,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:43,710 INFO L93 Difference]: Finished difference Result 1871 states and 2923 transitions. [2020-10-12 20:54:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:43,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:54:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:43,718 INFO L225 Difference]: With dead ends: 1871 [2020-10-12 20:54:43,718 INFO L226 Difference]: Without dead ends: 1325 [2020-10-12 20:54:43,720 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 [2020-10-12 20:54:43,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-10-12 20:54:43,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1027. [2020-10-12 20:54:43,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2020-10-12 20:54:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1608 transitions. [2020-10-12 20:54:43,763 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1608 transitions. Word has length 88 [2020-10-12 20:54:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:43,764 INFO L479 AbstractCegarLoop]: Abstraction has 1027 states and 1608 transitions. [2020-10-12 20:54:43,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1608 transitions. [2020-10-12 20:54:43,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:54:43,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:43,767 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1] [2020-10-12 20:54:43,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:54:43,769 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:43,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:43,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1672126401, now seen corresponding path program 1 times [2020-10-12 20:54:43,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:43,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615796480] [2020-10-12 20:54:43,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:43,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:48,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:54:48,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:48,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 20:54:48,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:54:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:54:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:48,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:48,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:48,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:48,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:54:49,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615796480] [2020-10-12 20:54:49,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:49,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:54:49,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229711502] [2020-10-12 20:54:49,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:54:49,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:49,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:54:49,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:54:49,007 INFO L87 Difference]: Start difference. First operand 1027 states and 1608 transitions. Second operand 9 states. [2020-10-12 20:54:50,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:50,585 INFO L93 Difference]: Finished difference Result 2123 states and 3313 transitions. [2020-10-12 20:54:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:54:50,586 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-12 20:54:50,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:50,592 INFO L225 Difference]: With dead ends: 2123 [2020-10-12 20:54:50,593 INFO L226 Difference]: Without dead ends: 1575 [2020-10-12 20:54:50,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:54:50,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2020-10-12 20:54:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1045. [2020-10-12 20:54:50,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-10-12 20:54:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1629 transitions. [2020-10-12 20:54:50,627 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1629 transitions. Word has length 89 [2020-10-12 20:54:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:50,628 INFO L479 AbstractCegarLoop]: Abstraction has 1045 states and 1629 transitions. [2020-10-12 20:54:50,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:54:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1629 transitions. [2020-10-12 20:54:50,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:54:50,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:50,630 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:50,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:54:50,631 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:50,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:50,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1010686648, now seen corresponding path program 1 times [2020-10-12 20:54:50,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:50,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717581010] [2020-10-12 20:54:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:52,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:52,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:54:52,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1830 [2020-10-12 20:54:52,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-12 20:54:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:54:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:52,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:52,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:52,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:52,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:52,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:54:52,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 20:54:52,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717581010] [2020-10-12 20:54:52,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:52,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:52,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721500003] [2020-10-12 20:54:52,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:52,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:52,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:52,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:52,556 INFO L87 Difference]: Start difference. First operand 1045 states and 1629 transitions. Second operand 5 states. [2020-10-12 20:54:53,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:53,537 INFO L93 Difference]: Finished difference Result 1778 states and 2764 transitions. [2020-10-12 20:54:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:53,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:54:53,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:53,542 INFO L225 Difference]: With dead ends: 1778 [2020-10-12 20:54:53,543 INFO L226 Difference]: Without dead ends: 1230 [2020-10-12 20:54:53,544 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 [2020-10-12 20:54:53,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-12 20:54:53,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1102. [2020-10-12 20:54:53,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-10-12 20:54:53,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1724 transitions. [2020-10-12 20:54:53,575 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1724 transitions. Word has length 89 [2020-10-12 20:54:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:53,575 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1724 transitions. [2020-10-12 20:54:53,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:53,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1724 transitions. [2020-10-12 20:54:53,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:54:53,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:53,578 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 20:54:53,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:54:53,579 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:53,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:53,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1600819095, now seen corresponding path program 1 times [2020-10-12 20:54:53,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:53,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458243288] [2020-10-12 20:54:53,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:55,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:55,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:54:55,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:55,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-12 20:54:55,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:54:55,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:54:55,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:55,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:55,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:55,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:55,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:55,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:55,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:54:55,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458243288] [2020-10-12 20:54:55,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:55,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:55,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568272686] [2020-10-12 20:54:55,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:55,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:55,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:55,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:55,098 INFO L87 Difference]: Start difference. First operand 1102 states and 1724 transitions. Second operand 5 states. [2020-10-12 20:54:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:55,912 INFO L93 Difference]: Finished difference Result 2585 states and 4049 transitions. [2020-10-12 20:54:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:55,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:54:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:55,919 INFO L225 Difference]: With dead ends: 2585 [2020-10-12 20:54:55,919 INFO L226 Difference]: Without dead ends: 1522 [2020-10-12 20:54:55,921 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 [2020-10-12 20:54:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2020-10-12 20:54:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1170. [2020-10-12 20:54:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-10-12 20:54:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1820 transitions. [2020-10-12 20:54:55,959 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1820 transitions. Word has length 89 [2020-10-12 20:54:55,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:55,959 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1820 transitions. [2020-10-12 20:54:55,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1820 transitions. [2020-10-12 20:54:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:54:55,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:55,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:55,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:54:55,963 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:55,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:55,963 INFO L82 PathProgramCache]: Analyzing trace with hash 867772271, now seen corresponding path program 1 times [2020-10-12 20:54:55,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:55,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016444434] [2020-10-12 20:54:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:55,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:58,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:54:58,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2981 [2020-10-12 20:54:58,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:58,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:58,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:54:58,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:54:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:59,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:59,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:59,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:59,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:59,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:54:59,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016444434] [2020-10-12 20:54:59,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:59,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:59,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014842250] [2020-10-12 20:54:59,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:59,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:59,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:59,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:59,032 INFO L87 Difference]: Start difference. First operand 1170 states and 1820 transitions. Second operand 5 states. [2020-10-12 20:54:59,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:59,827 INFO L93 Difference]: Finished difference Result 2160 states and 3349 transitions. [2020-10-12 20:54:59,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:59,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:54:59,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:59,834 INFO L225 Difference]: With dead ends: 2160 [2020-10-12 20:54:59,835 INFO L226 Difference]: Without dead ends: 1520 [2020-10-12 20:54:59,836 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 [2020-10-12 20:54:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2020-10-12 20:54:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1166. [2020-10-12 20:54:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:54:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1796 transitions. [2020-10-12 20:54:59,873 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1796 transitions. Word has length 94 [2020-10-12 20:54:59,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:59,874 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1796 transitions. [2020-10-12 20:54:59,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1796 transitions. [2020-10-12 20:54:59,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:54:59,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:59,877 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] [2020-10-12 20:54:59,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:54:59,877 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:59,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:59,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1853724601, now seen corresponding path program 1 times [2020-10-12 20:54:59,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:59,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105901337] [2020-10-12 20:54:59,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:03,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:03,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:55:03,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:03,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3813 [2020-10-12 20:55:03,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:55:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:55:03,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:03,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:03,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:03,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:03,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:03,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105901337] [2020-10-12 20:55:03,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:03,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:03,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963246068] [2020-10-12 20:55:03,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:03,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:03,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:03,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:03,787 INFO L87 Difference]: Start difference. First operand 1166 states and 1796 transitions. Second operand 5 states. [2020-10-12 20:55:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:04,613 INFO L93 Difference]: Finished difference Result 2499 states and 3808 transitions. [2020-10-12 20:55:04,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:04,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:55:04,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:04,624 INFO L225 Difference]: With dead ends: 2499 [2020-10-12 20:55:04,624 INFO L226 Difference]: Without dead ends: 1326 [2020-10-12 20:55:04,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:04,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-10-12 20:55:04,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1166. [2020-10-12 20:55:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1792 transitions. [2020-10-12 20:55:04,661 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1792 transitions. Word has length 94 [2020-10-12 20:55:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:04,661 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1792 transitions. [2020-10-12 20:55:04,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1792 transitions. [2020-10-12 20:55:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:55:04,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:04,664 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] [2020-10-12 20:55:04,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:55:04,665 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1500636219, now seen corresponding path program 1 times [2020-10-12 20:55:04,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:04,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23369692] [2020-10-12 20:55:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:08,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:55:08,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:08,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3840 [2020-10-12 20:55:08,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:55:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:55:08,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:08,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:08,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:08,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:08,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:08,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:08,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:08,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:08,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:08,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:08,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23369692] [2020-10-12 20:55:08,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:08,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:08,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327059334] [2020-10-12 20:55:08,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:08,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:08,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:08,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:08,597 INFO L87 Difference]: Start difference. First operand 1166 states and 1792 transitions. Second operand 5 states. [2020-10-12 20:55:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:09,343 INFO L93 Difference]: Finished difference Result 2431 states and 3714 transitions. [2020-10-12 20:55:09,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:09,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:55:09,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:09,348 INFO L225 Difference]: With dead ends: 2431 [2020-10-12 20:55:09,349 INFO L226 Difference]: Without dead ends: 1258 [2020-10-12 20:55:09,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-10-12 20:55:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1166. [2020-10-12 20:55:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1788 transitions. [2020-10-12 20:55:09,381 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1788 transitions. Word has length 94 [2020-10-12 20:55:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:09,381 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1788 transitions. [2020-10-12 20:55:09,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1788 transitions. [2020-10-12 20:55:09,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 20:55:09,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:09,384 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] [2020-10-12 20:55:09,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:55:09,384 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:09,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:09,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1747552883, now seen corresponding path program 1 times [2020-10-12 20:55:09,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:09,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561283532] [2020-10-12 20:55:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:09,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:10,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:55:10,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:10,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-12 20:55:10,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:55:10,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:10,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:10,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:10,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:10,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561283532] [2020-10-12 20:55:10,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:10,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:10,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437459553] [2020-10-12 20:55:10,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:10,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:10,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:10,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:10,363 INFO L87 Difference]: Start difference. First operand 1166 states and 1788 transitions. Second operand 5 states. [2020-10-12 20:55:11,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:11,156 INFO L93 Difference]: Finished difference Result 1962 states and 2976 transitions. [2020-10-12 20:55:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:11,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-12 20:55:11,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:11,162 INFO L225 Difference]: With dead ends: 1962 [2020-10-12 20:55:11,162 INFO L226 Difference]: Without dead ends: 1322 [2020-10-12 20:55:11,163 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 [2020-10-12 20:55:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-10-12 20:55:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1166. [2020-10-12 20:55:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1784 transitions. [2020-10-12 20:55:11,195 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1784 transitions. Word has length 99 [2020-10-12 20:55:11,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:11,196 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1784 transitions. [2020-10-12 20:55:11,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1784 transitions. [2020-10-12 20:55:11,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 20:55:11,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:11,198 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] [2020-10-12 20:55:11,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:55:11,199 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:11,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:11,199 INFO L82 PathProgramCache]: Analyzing trace with hash -209212853, now seen corresponding path program 1 times [2020-10-12 20:55:11,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:11,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479029484] [2020-10-12 20:55:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:11,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:12,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:12,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:55:12,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-12 20:55:12,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:55:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:12,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:12,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:12,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:12,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:12,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:12,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:12,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479029484] [2020-10-12 20:55:12,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:12,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:12,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460064114] [2020-10-12 20:55:12,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:12,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:12,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:12,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:12,145 INFO L87 Difference]: Start difference. First operand 1166 states and 1784 transitions. Second operand 5 states. [2020-10-12 20:55:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:12,882 INFO L93 Difference]: Finished difference Result 1894 states and 2884 transitions. [2020-10-12 20:55:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:12,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-12 20:55:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:12,888 INFO L225 Difference]: With dead ends: 1894 [2020-10-12 20:55:12,888 INFO L226 Difference]: Without dead ends: 1254 [2020-10-12 20:55:12,890 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 [2020-10-12 20:55:12,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2020-10-12 20:55:12,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1166. [2020-10-12 20:55:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1780 transitions. [2020-10-12 20:55:12,918 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1780 transitions. Word has length 99 [2020-10-12 20:55:12,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:12,919 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1780 transitions. [2020-10-12 20:55:12,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1780 transitions. [2020-10-12 20:55:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:55:12,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:12,921 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] [2020-10-12 20:55:12,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:55:12,922 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:12,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1487890754, now seen corresponding path program 1 times [2020-10-12 20:55:12,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:12,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161148908] [2020-10-12 20:55:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:13,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:13,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:55:13,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-10-12 20:55:13,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:55:13,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:14,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:14,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:14,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:14,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:14,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:14,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161148908] [2020-10-12 20:55:14,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:14,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:14,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923024875] [2020-10-12 20:55:14,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:14,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:14,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:14,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:14,045 INFO L87 Difference]: Start difference. First operand 1166 states and 1780 transitions. Second operand 5 states. [2020-10-12 20:55:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:14,877 INFO L93 Difference]: Finished difference Result 2455 states and 3722 transitions. [2020-10-12 20:55:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:14,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:55:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:14,882 INFO L225 Difference]: With dead ends: 2455 [2020-10-12 20:55:14,882 INFO L226 Difference]: Without dead ends: 1322 [2020-10-12 20:55:14,884 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 [2020-10-12 20:55:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-10-12 20:55:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1166. [2020-10-12 20:55:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:14,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1776 transitions. [2020-10-12 20:55:14,909 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1776 transitions. Word has length 102 [2020-10-12 20:55:14,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:14,909 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1776 transitions. [2020-10-12 20:55:14,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:14,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1776 transitions. [2020-10-12 20:55:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:55:14,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:14,911 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] [2020-10-12 20:55:14,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:55:14,911 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:14,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1420291132, now seen corresponding path program 1 times [2020-10-12 20:55:14,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:14,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984562244] [2020-10-12 20:55:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:14,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:15,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:55:15,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:15,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-12 20:55:15,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:55:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:55:15,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:15,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:15,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:15,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:15,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:15,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:15,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:55:15,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984562244] [2020-10-12 20:55:15,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:15,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:15,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931666564] [2020-10-12 20:55:15,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:15,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:15,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:15,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:15,318 INFO L87 Difference]: Start difference. First operand 1166 states and 1776 transitions. Second operand 5 states. [2020-10-12 20:55:16,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:16,051 INFO L93 Difference]: Finished difference Result 2537 states and 3862 transitions. [2020-10-12 20:55:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:16,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:55:16,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:16,055 INFO L225 Difference]: With dead ends: 2537 [2020-10-12 20:55:16,056 INFO L226 Difference]: Without dead ends: 1404 [2020-10-12 20:55:16,058 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 [2020-10-12 20:55:16,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-10-12 20:55:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1266. [2020-10-12 20:55:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-10-12 20:55:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1944 transitions. [2020-10-12 20:55:16,086 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1944 transitions. Word has length 102 [2020-10-12 20:55:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:16,086 INFO L479 AbstractCegarLoop]: Abstraction has 1266 states and 1944 transitions. [2020-10-12 20:55:16,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1944 transitions. [2020-10-12 20:55:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:55:16,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:16,088 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] [2020-10-12 20:55:16,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:55:16,088 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:16,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:16,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1073573527, now seen corresponding path program 1 times [2020-10-12 20:55:16,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:16,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207266962] [2020-10-12 20:55:16,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:18,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:18,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:55:18,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2282 [2020-10-12 20:55:18,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:55:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 20:55:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:18,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:18,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:18,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:18,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:18,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:18,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:18,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:18,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:18,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:18,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:18,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:18,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207266962] [2020-10-12 20:55:18,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:18,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:18,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912663962] [2020-10-12 20:55:18,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:18,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:18,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:18,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:18,670 INFO L87 Difference]: Start difference. First operand 1266 states and 1944 transitions. Second operand 9 states. [2020-10-12 20:55:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:20,799 INFO L93 Difference]: Finished difference Result 3816 states and 5879 transitions. [2020-10-12 20:55:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:55:20,800 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-10-12 20:55:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:20,806 INFO L225 Difference]: With dead ends: 3816 [2020-10-12 20:55:20,806 INFO L226 Difference]: Without dead ends: 3125 [2020-10-12 20:55:20,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:55:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-12 20:55:20,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 2342. [2020-10-12 20:55:20,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3650 transitions. [2020-10-12 20:55:20,853 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3650 transitions. Word has length 108 [2020-10-12 20:55:20,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:20,853 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3650 transitions. [2020-10-12 20:55:20,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:55:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3650 transitions. [2020-10-12 20:55:20,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:55:20,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:20,855 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] [2020-10-12 20:55:20,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:55:20,856 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:20,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:20,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1733105049, now seen corresponding path program 1 times [2020-10-12 20:55:20,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:20,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310829194] [2020-10-12 20:55:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:20,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:55:21,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:21,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:21,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:21,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:21,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:21,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:21,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310829194] [2020-10-12 20:55:21,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:21,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:21,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718136306] [2020-10-12 20:55:21,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:21,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:21,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:21,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:21,460 INFO L87 Difference]: Start difference. First operand 2342 states and 3650 transitions. Second operand 5 states. [2020-10-12 20:55:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:22,311 INFO L93 Difference]: Finished difference Result 3924 states and 6050 transitions. [2020-10-12 20:55:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:22,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:55:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:22,317 INFO L225 Difference]: With dead ends: 3924 [2020-10-12 20:55:22,318 INFO L226 Difference]: Without dead ends: 2612 [2020-10-12 20:55:22,321 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 [2020-10-12 20:55:22,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2020-10-12 20:55:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2342. [2020-10-12 20:55:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3642 transitions. [2020-10-12 20:55:22,394 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3642 transitions. Word has length 108 [2020-10-12 20:55:22,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:22,396 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3642 transitions. [2020-10-12 20:55:22,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3642 transitions. [2020-10-12 20:55:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:55:22,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:22,401 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] [2020-10-12 20:55:22,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:55:22,401 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:22,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1843312188, now seen corresponding path program 1 times [2020-10-12 20:55:22,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:22,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907014943] [2020-10-12 20:55:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:22,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:22,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:55:22,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-12 20:55:22,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:55:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:22,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:22,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:22,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:22,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:23,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907014943] [2020-10-12 20:55:23,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:23,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:23,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296143704] [2020-10-12 20:55:23,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:23,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:23,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:23,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:23,003 INFO L87 Difference]: Start difference. First operand 2342 states and 3642 transitions. Second operand 5 states. [2020-10-12 20:55:23,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:23,874 INFO L93 Difference]: Finished difference Result 3916 states and 6026 transitions. [2020-10-12 20:55:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:23,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:55:23,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:23,880 INFO L225 Difference]: With dead ends: 3916 [2020-10-12 20:55:23,881 INFO L226 Difference]: Without dead ends: 2604 [2020-10-12 20:55:23,883 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 [2020-10-12 20:55:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2020-10-12 20:55:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2342. [2020-10-12 20:55:23,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:23,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3634 transitions. [2020-10-12 20:55:23,958 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3634 transitions. Word has length 109 [2020-10-12 20:55:23,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:23,958 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3634 transitions. [2020-10-12 20:55:23,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:23,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3634 transitions. [2020-10-12 20:55:23,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:55:23,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:23,962 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] [2020-10-12 20:55:23,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:55:23,963 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:23,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:23,963 INFO L82 PathProgramCache]: Analyzing trace with hash -856836182, now seen corresponding path program 1 times [2020-10-12 20:55:23,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:23,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674129554] [2020-10-12 20:55:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:24,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:55:24,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-12 20:55:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:55:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:24,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:24,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:24,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:24,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:24,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674129554] [2020-10-12 20:55:24,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:24,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:24,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586271220] [2020-10-12 20:55:24,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:24,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:24,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:24,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:24,479 INFO L87 Difference]: Start difference. First operand 2342 states and 3634 transitions. Second operand 5 states. [2020-10-12 20:55:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:25,305 INFO L93 Difference]: Finished difference Result 4881 states and 7530 transitions. [2020-10-12 20:55:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:25,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:55:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:25,311 INFO L225 Difference]: With dead ends: 4881 [2020-10-12 20:55:25,311 INFO L226 Difference]: Without dead ends: 2580 [2020-10-12 20:55:25,315 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 [2020-10-12 20:55:25,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-10-12 20:55:25,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2342. [2020-10-12 20:55:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3626 transitions. [2020-10-12 20:55:25,377 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3626 transitions. Word has length 109 [2020-10-12 20:55:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:25,378 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3626 transitions. [2020-10-12 20:55:25,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3626 transitions. [2020-10-12 20:55:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:55:25,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:25,380 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] [2020-10-12 20:55:25,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:55:25,381 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:25,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:25,381 INFO L82 PathProgramCache]: Analyzing trace with hash 892244443, now seen corresponding path program 1 times [2020-10-12 20:55:25,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:25,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959545180] [2020-10-12 20:55:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:25,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:26,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:55:26,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-12 20:55:26,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:55:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:26,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:26,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:26,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:26,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:26,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:26,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:26,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959545180] [2020-10-12 20:55:26,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:26,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:26,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240687733] [2020-10-12 20:55:26,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:26,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:26,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:26,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:26,823 INFO L87 Difference]: Start difference. First operand 2342 states and 3626 transitions. Second operand 5 states. [2020-10-12 20:55:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:27,680 INFO L93 Difference]: Finished difference Result 4881 states and 7514 transitions. [2020-10-12 20:55:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:27,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 20:55:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:27,687 INFO L225 Difference]: With dead ends: 4881 [2020-10-12 20:55:27,688 INFO L226 Difference]: Without dead ends: 2580 [2020-10-12 20:55:27,691 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 [2020-10-12 20:55:27,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-10-12 20:55:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2342. [2020-10-12 20:55:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3618 transitions. [2020-10-12 20:55:27,765 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3618 transitions. Word has length 111 [2020-10-12 20:55:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:27,765 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3618 transitions. [2020-10-12 20:55:27,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3618 transitions. [2020-10-12 20:55:27,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:55:27,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:27,769 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] [2020-10-12 20:55:27,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:55:27,769 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:27,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:27,770 INFO L82 PathProgramCache]: Analyzing trace with hash 539390263, now seen corresponding path program 1 times [2020-10-12 20:55:27,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:27,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54266895] [2020-10-12 20:55:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:28,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:55:28,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:28,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-12 20:55:28,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:28,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:28,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:28,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:55:28,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:28,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:28,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:28,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:28,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:28,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:28,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:28,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54266895] [2020-10-12 20:55:28,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:28,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:28,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212083858] [2020-10-12 20:55:28,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:28,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:28,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:28,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:28,569 INFO L87 Difference]: Start difference. First operand 2342 states and 3618 transitions. Second operand 5 states. [2020-10-12 20:55:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:29,427 INFO L93 Difference]: Finished difference Result 4881 states and 7498 transitions. [2020-10-12 20:55:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:29,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:55:29,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:29,430 INFO L225 Difference]: With dead ends: 4881 [2020-10-12 20:55:29,431 INFO L226 Difference]: Without dead ends: 2580 [2020-10-12 20:55:29,433 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 [2020-10-12 20:55:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-10-12 20:55:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2342. [2020-10-12 20:55:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3610 transitions. [2020-10-12 20:55:29,498 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3610 transitions. Word has length 112 [2020-10-12 20:55:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:29,499 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3610 transitions. [2020-10-12 20:55:29,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3610 transitions. [2020-10-12 20:55:29,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:55:29,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:29,503 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] [2020-10-12 20:55:29,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:55:29,503 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:29,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:29,504 INFO L82 PathProgramCache]: Analyzing trace with hash 833147573, now seen corresponding path program 1 times [2020-10-12 20:55:29,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:29,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35762458] [2020-10-12 20:55:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:29,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:30,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:30,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:55:30,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-12 20:55:30,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:30,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:30,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:55:30,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:30,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:30,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:30,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:30,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:30,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35762458] [2020-10-12 20:55:30,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:30,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:30,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131632144] [2020-10-12 20:55:30,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:30,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:30,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:30,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:30,891 INFO L87 Difference]: Start difference. First operand 2342 states and 3610 transitions. Second operand 5 states. [2020-10-12 20:55:31,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:31,717 INFO L93 Difference]: Finished difference Result 4849 states and 7442 transitions. [2020-10-12 20:55:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:31,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:55:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:31,720 INFO L225 Difference]: With dead ends: 4849 [2020-10-12 20:55:31,721 INFO L226 Difference]: Without dead ends: 2548 [2020-10-12 20:55:31,723 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 [2020-10-12 20:55:31,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-12 20:55:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2342. [2020-10-12 20:55:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3602 transitions. [2020-10-12 20:55:31,791 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3602 transitions. Word has length 112 [2020-10-12 20:55:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:31,792 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3602 transitions. [2020-10-12 20:55:31,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3602 transitions. [2020-10-12 20:55:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:55:31,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:31,795 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] [2020-10-12 20:55:31,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:55:31,795 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:31,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:31,796 INFO L82 PathProgramCache]: Analyzing trace with hash -146029206, now seen corresponding path program 1 times [2020-10-12 20:55:31,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:31,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788670254] [2020-10-12 20:55:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:32,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:55:32,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-12 20:55:32,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:55:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:32,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:32,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:32,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:32,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:32,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:32,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:32,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788670254] [2020-10-12 20:55:32,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:32,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:32,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778370776] [2020-10-12 20:55:32,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:32,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:32,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:32,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:32,809 INFO L87 Difference]: Start difference. First operand 2342 states and 3602 transitions. Second operand 5 states. [2020-10-12 20:55:33,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:33,671 INFO L93 Difference]: Finished difference Result 3860 states and 5894 transitions. [2020-10-12 20:55:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:33,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:55:33,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:33,675 INFO L225 Difference]: With dead ends: 3860 [2020-10-12 20:55:33,675 INFO L226 Difference]: Without dead ends: 2548 [2020-10-12 20:55:33,677 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 [2020-10-12 20:55:33,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-12 20:55:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2342. [2020-10-12 20:55:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3594 transitions. [2020-10-12 20:55:33,766 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3594 transitions. Word has length 113 [2020-10-12 20:55:33,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:33,766 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3594 transitions. [2020-10-12 20:55:33,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:33,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3594 transitions. [2020-10-12 20:55:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:55:33,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:33,769 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, 1] [2020-10-12 20:55:33,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:55:33,769 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:33,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:33,769 INFO L82 PathProgramCache]: Analyzing trace with hash -422650115, now seen corresponding path program 1 times [2020-10-12 20:55:33,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:33,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936686687] [2020-10-12 20:55:33,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:33,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:33,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:33,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:34,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:34,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:55:34,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:34,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-12 20:55:34,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:55:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:34,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:34,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:34,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:34,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:34,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:34,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:34,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:34,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:34,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:34,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936686687] [2020-10-12 20:55:34,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:34,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:34,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070530093] [2020-10-12 20:55:34,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:34,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:34,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:34,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:34,508 INFO L87 Difference]: Start difference. First operand 2342 states and 3594 transitions. Second operand 5 states. [2020-10-12 20:55:35,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:35,388 INFO L93 Difference]: Finished difference Result 4833 states and 7394 transitions. [2020-10-12 20:55:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:35,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:55:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:35,392 INFO L225 Difference]: With dead ends: 4833 [2020-10-12 20:55:35,393 INFO L226 Difference]: Without dead ends: 2532 [2020-10-12 20:55:35,396 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 [2020-10-12 20:55:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2020-10-12 20:55:35,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2342. [2020-10-12 20:55:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3586 transitions. [2020-10-12 20:55:35,462 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3586 transitions. Word has length 113 [2020-10-12 20:55:35,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:35,463 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3586 transitions. [2020-10-12 20:55:35,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3586 transitions. [2020-10-12 20:55:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:55:35,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:35,466 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, 1, 1] [2020-10-12 20:55:35,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:55:35,467 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:35,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1359667634, now seen corresponding path program 1 times [2020-10-12 20:55:35,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:35,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498824726] [2020-10-12 20:55:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:35,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:35,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:36,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:55:36,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:36,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-12 20:55:36,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:55:36,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:36,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:36,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:36,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:36,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:36,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:36,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498824726] [2020-10-12 20:55:36,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:36,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:36,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735547453] [2020-10-12 20:55:36,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:36,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:36,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:36,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:36,211 INFO L87 Difference]: Start difference. First operand 2342 states and 3586 transitions. Second operand 5 states. [2020-10-12 20:55:37,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:37,072 INFO L93 Difference]: Finished difference Result 4833 states and 7378 transitions. [2020-10-12 20:55:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:37,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 20:55:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:37,076 INFO L225 Difference]: With dead ends: 4833 [2020-10-12 20:55:37,076 INFO L226 Difference]: Without dead ends: 2532 [2020-10-12 20:55:37,079 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 [2020-10-12 20:55:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2020-10-12 20:55:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2342. [2020-10-12 20:55:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3578 transitions. [2020-10-12 20:55:37,124 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3578 transitions. Word has length 114 [2020-10-12 20:55:37,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:37,125 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3578 transitions. [2020-10-12 20:55:37,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3578 transitions. [2020-10-12 20:55:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:55:37,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:37,127 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] [2020-10-12 20:55:37,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:55:37,128 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:37,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:37,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2008010017, now seen corresponding path program 1 times [2020-10-12 20:55:37,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:37,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323042063] [2020-10-12 20:55:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:38,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:55:38,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:38,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-12 20:55:38,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:38,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:38,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:38,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:55:38,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:38,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:38,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:38,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:38,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:38,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:38,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323042063] [2020-10-12 20:55:38,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:38,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:38,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435089354] [2020-10-12 20:55:38,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:38,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:38,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:38,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:38,174 INFO L87 Difference]: Start difference. First operand 2342 states and 3578 transitions. Second operand 5 states. [2020-10-12 20:55:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:39,023 INFO L93 Difference]: Finished difference Result 3836 states and 5834 transitions. [2020-10-12 20:55:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:39,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 20:55:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:39,026 INFO L225 Difference]: With dead ends: 3836 [2020-10-12 20:55:39,026 INFO L226 Difference]: Without dead ends: 2524 [2020-10-12 20:55:39,028 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 [2020-10-12 20:55:39,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2020-10-12 20:55:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 2342. [2020-10-12 20:55:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3570 transitions. [2020-10-12 20:55:39,075 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3570 transitions. Word has length 114 [2020-10-12 20:55:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:39,075 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3570 transitions. [2020-10-12 20:55:39,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3570 transitions. [2020-10-12 20:55:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:55:39,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:39,077 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, 1, 1, 1] [2020-10-12 20:55:39,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 20:55:39,078 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:39,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:39,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1126795608, now seen corresponding path program 1 times [2020-10-12 20:55:39,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:39,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609127613] [2020-10-12 20:55:39,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:39,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:39,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:55:39,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:39,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-12 20:55:39,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:55:39,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:39,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:39,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:39,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:39,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:39,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:39,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609127613] [2020-10-12 20:55:39,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:39,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:39,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783802028] [2020-10-12 20:55:39,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:39,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:39,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:39,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:39,819 INFO L87 Difference]: Start difference. First operand 2342 states and 3570 transitions. Second operand 5 states. [2020-10-12 20:55:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:40,644 INFO L93 Difference]: Finished difference Result 4604 states and 6987 transitions. [2020-10-12 20:55:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:40,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-12 20:55:40,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:40,648 INFO L225 Difference]: With dead ends: 4604 [2020-10-12 20:55:40,648 INFO L226 Difference]: Without dead ends: 2303 [2020-10-12 20:55:40,652 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 [2020-10-12 20:55:40,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2020-10-12 20:55:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2085. [2020-10-12 20:55:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-12 20:55:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3175 transitions. [2020-10-12 20:55:40,692 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3175 transitions. Word has length 115 [2020-10-12 20:55:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:40,692 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 3175 transitions. [2020-10-12 20:55:40,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3175 transitions. [2020-10-12 20:55:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:55:40,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:40,694 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] [2020-10-12 20:55:40,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 20:55:40,694 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:40,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:40,695 INFO L82 PathProgramCache]: Analyzing trace with hash 934202430, now seen corresponding path program 1 times [2020-10-12 20:55:40,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:40,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446591781] [2020-10-12 20:55:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:40,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:44,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:55:44,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:44,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4204 [2020-10-12 20:55:44,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:55:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:55:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:44,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:44,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:44,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:44,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:55:44,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446591781] [2020-10-12 20:55:44,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:44,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:44,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097081568] [2020-10-12 20:55:44,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:44,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:44,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:44,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:44,997 INFO L87 Difference]: Start difference. First operand 2085 states and 3175 transitions. Second operand 5 states. [2020-10-12 20:55:45,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:45,832 INFO L93 Difference]: Finished difference Result 3241 states and 4882 transitions. [2020-10-12 20:55:45,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:45,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:55:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:45,835 INFO L225 Difference]: With dead ends: 3241 [2020-10-12 20:55:45,835 INFO L226 Difference]: Without dead ends: 1994 [2020-10-12 20:55:45,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2020-10-12 20:55:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1842. [2020-10-12 20:55:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1842 states. [2020-10-12 20:55:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2786 transitions. [2020-10-12 20:55:45,870 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2786 transitions. Word has length 116 [2020-10-12 20:55:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:45,870 INFO L479 AbstractCegarLoop]: Abstraction has 1842 states and 2786 transitions. [2020-10-12 20:55:45,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2786 transitions. [2020-10-12 20:55:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:55:45,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:45,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:45,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 20:55:45,873 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:45,873 INFO L82 PathProgramCache]: Analyzing trace with hash -888241065, now seen corresponding path program 1 times [2020-10-12 20:55:45,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:45,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549917295] [2020-10-12 20:55:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:46,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:55:46,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-12 20:55:46,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:55:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:55:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:46,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:46,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:46,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:46,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:46,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:46,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:55:46,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549917295] [2020-10-12 20:55:46,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:46,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:46,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867412200] [2020-10-12 20:55:46,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:46,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:46,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:46,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:46,276 INFO L87 Difference]: Start difference. First operand 1842 states and 2786 transitions. Second operand 5 states. [2020-10-12 20:55:47,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:47,309 INFO L93 Difference]: Finished difference Result 2752 states and 4157 transitions. [2020-10-12 20:55:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:47,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:55:47,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:47,312 INFO L225 Difference]: With dead ends: 2752 [2020-10-12 20:55:47,312 INFO L226 Difference]: Without dead ends: 2061 [2020-10-12 20:55:47,313 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 [2020-10-12 20:55:47,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2020-10-12 20:55:47,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1873. [2020-10-12 20:55:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2020-10-12 20:55:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2837 transitions. [2020-10-12 20:55:47,347 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2837 transitions. Word has length 121 [2020-10-12 20:55:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:47,347 INFO L479 AbstractCegarLoop]: Abstraction has 1873 states and 2837 transitions. [2020-10-12 20:55:47,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:47,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2837 transitions. [2020-10-12 20:55:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:55:47,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:47,349 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2020-10-12 20:55:47,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 20:55:47,349 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:47,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:47,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2076554200, now seen corresponding path program 1 times [2020-10-12 20:55:47,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:47,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732839645] [2020-10-12 20:55:47,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:47,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:48,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:55:48,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:48,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-12 20:55:48,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:55:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:55:48,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:48,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:48,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:48,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:48,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:48,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:48,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 20:55:48,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732839645] [2020-10-12 20:55:48,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:48,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:48,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934485477] [2020-10-12 20:55:48,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:48,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:48,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:48,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:48,370 INFO L87 Difference]: Start difference. First operand 1873 states and 2837 transitions. Second operand 5 states. [2020-10-12 20:55:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:49,278 INFO L93 Difference]: Finished difference Result 3436 states and 5210 transitions. [2020-10-12 20:55:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:49,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:55:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:49,281 INFO L225 Difference]: With dead ends: 3436 [2020-10-12 20:55:49,281 INFO L226 Difference]: Without dead ends: 2093 [2020-10-12 20:55:49,283 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 [2020-10-12 20:55:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2020-10-12 20:55:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 1913. [2020-10-12 20:55:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1913 states. [2020-10-12 20:55:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2913 transitions. [2020-10-12 20:55:49,316 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2913 transitions. Word has length 121 [2020-10-12 20:55:49,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:49,317 INFO L479 AbstractCegarLoop]: Abstraction has 1913 states and 2913 transitions. [2020-10-12 20:55:49,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:49,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2913 transitions. [2020-10-12 20:55:49,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:55:49,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:49,319 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, 1, 1, 1, 1] [2020-10-12 20:55:49,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 20:55:49,319 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:49,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:49,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1184485646, now seen corresponding path program 1 times [2020-10-12 20:55:49,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:49,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989842585] [2020-10-12 20:55:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:49,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:55:49,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-12 20:55:49,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:55:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:55:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:49,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:49,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:49,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:49,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:49,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:55:49,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989842585] [2020-10-12 20:55:49,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:49,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:49,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242312948] [2020-10-12 20:55:49,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:49,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:49,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:49,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:49,713 INFO L87 Difference]: Start difference. First operand 1913 states and 2913 transitions. Second operand 5 states. [2020-10-12 20:55:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:50,695 INFO L93 Difference]: Finished difference Result 2827 states and 4294 transitions. [2020-10-12 20:55:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:50,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:55:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:50,698 INFO L225 Difference]: With dead ends: 2827 [2020-10-12 20:55:50,698 INFO L226 Difference]: Without dead ends: 2085 [2020-10-12 20:55:50,700 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 [2020-10-12 20:55:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-10-12 20:55:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1939. [2020-10-12 20:55:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1939 states. [2020-10-12 20:55:50,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2957 transitions. [2020-10-12 20:55:50,741 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2957 transitions. Word has length 122 [2020-10-12 20:55:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:50,742 INFO L479 AbstractCegarLoop]: Abstraction has 1939 states and 2957 transitions. [2020-10-12 20:55:50,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2957 transitions. [2020-10-12 20:55:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:55:50,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:50,744 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2020-10-12 20:55:50,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 20:55:50,744 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:50,745 INFO L82 PathProgramCache]: Analyzing trace with hash 44321912, now seen corresponding path program 1 times [2020-10-12 20:55:50,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:50,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158925366] [2020-10-12 20:55:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:55:51,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-12 20:55:51,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:55:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:55:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:51,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:51,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:51,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:51,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 20:55:51,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158925366] [2020-10-12 20:55:51,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:51,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:51,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498893833] [2020-10-12 20:55:51,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:51,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:51,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:51,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:51,717 INFO L87 Difference]: Start difference. First operand 1939 states and 2957 transitions. Second operand 5 states. [2020-10-12 20:55:52,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:52,604 INFO L93 Difference]: Finished difference Result 3510 states and 5345 transitions. [2020-10-12 20:55:52,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:52,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:55:52,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:52,607 INFO L225 Difference]: With dead ends: 3510 [2020-10-12 20:55:52,607 INFO L226 Difference]: Without dead ends: 2101 [2020-10-12 20:55:52,609 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 [2020-10-12 20:55:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2020-10-12 20:55:52,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1935. [2020-10-12 20:55:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-12 20:55:52,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2953 transitions. [2020-10-12 20:55:52,646 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2953 transitions. Word has length 122 [2020-10-12 20:55:52,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:52,646 INFO L479 AbstractCegarLoop]: Abstraction has 1935 states and 2953 transitions. [2020-10-12 20:55:52,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:52,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2953 transitions. [2020-10-12 20:55:52,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:55:52,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:52,649 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:52,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 20:55:52,649 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:52,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:52,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1775467415, now seen corresponding path program 1 times [2020-10-12 20:55:52,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:52,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514410511] [2020-10-12 20:55:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:52,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:55,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:55:55,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2633 [2020-10-12 20:55:55,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:55:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:55:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:55:55,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:55,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:55,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:55,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:55,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:55,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:55,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:55,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:55:55,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514410511] [2020-10-12 20:55:55,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:55,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:55:55,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201615714] [2020-10-12 20:55:55,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:55:55,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:55,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:55:55,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:55,431 INFO L87 Difference]: Start difference. First operand 1935 states and 2953 transitions. Second operand 6 states. [2020-10-12 20:55:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:56,738 INFO L93 Difference]: Finished difference Result 3900 states and 5942 transitions. [2020-10-12 20:55:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:55:56,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-12 20:55:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:56,741 INFO L225 Difference]: With dead ends: 3900 [2020-10-12 20:55:56,741 INFO L226 Difference]: Without dead ends: 2495 [2020-10-12 20:55:56,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:55:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2020-10-12 20:55:56,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1997. [2020-10-12 20:55:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1997 states. [2020-10-12 20:55:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 3055 transitions. [2020-10-12 20:55:56,786 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 3055 transitions. Word has length 123 [2020-10-12 20:55:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:56,786 INFO L479 AbstractCegarLoop]: Abstraction has 1997 states and 3055 transitions. [2020-10-12 20:55:56,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:55:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 3055 transitions. [2020-10-12 20:55:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:55:56,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:56,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:56,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 20:55:56,789 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:56,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1703080857, now seen corresponding path program 1 times [2020-10-12 20:55:56,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:56,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560714272] [2020-10-12 20:55:56,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:56,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:00,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:56:00,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4129 [2020-10-12 20:56:00,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:56:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:56:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:56:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:01,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:01,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:01,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:01,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:01,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560714272] [2020-10-12 20:56:01,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:01,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:56:01,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390502213] [2020-10-12 20:56:01,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:56:01,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:01,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:56:01,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:01,044 INFO L87 Difference]: Start difference. First operand 1997 states and 3055 transitions. Second operand 6 states. [2020-10-12 20:56:02,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:02,219 INFO L93 Difference]: Finished difference Result 4013 states and 6142 transitions. [2020-10-12 20:56:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:56:02,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-12 20:56:02,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:02,222 INFO L225 Difference]: With dead ends: 4013 [2020-10-12 20:56:02,222 INFO L226 Difference]: Without dead ends: 2546 [2020-10-12 20:56:02,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:56:02,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2020-10-12 20:56:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1966. [2020-10-12 20:56:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-12 20:56:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3008 transitions. [2020-10-12 20:56:02,271 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3008 transitions. Word has length 123 [2020-10-12 20:56:02,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:02,271 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 3008 transitions. [2020-10-12 20:56:02,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:56:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3008 transitions. [2020-10-12 20:56:02,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:56:02,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:02,274 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, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:02,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-12 20:56:02,274 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:02,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:02,274 INFO L82 PathProgramCache]: Analyzing trace with hash -213901390, now seen corresponding path program 1 times [2020-10-12 20:56:02,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:02,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492743795] [2020-10-12 20:56:02,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:03,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:03,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:04,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:04,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:56:04,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:04,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2453 [2020-10-12 20:56:04,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:56:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:56:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:56:04,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:04,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:04,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:04,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:04,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:04,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:04,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:04,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:04,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:04,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:04,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:04,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492743795] [2020-10-12 20:56:04,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:04,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:56:04,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935431208] [2020-10-12 20:56:04,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:56:04,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:04,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:56:04,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:04,852 INFO L87 Difference]: Start difference. First operand 1966 states and 3008 transitions. Second operand 6 states. [2020-10-12 20:56:06,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:06,016 INFO L93 Difference]: Finished difference Result 3868 states and 5894 transitions. [2020-10-12 20:56:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:56:06,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-10-12 20:56:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:06,019 INFO L225 Difference]: With dead ends: 3868 [2020-10-12 20:56:06,019 INFO L226 Difference]: Without dead ends: 2432 [2020-10-12 20:56:06,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:56:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2020-10-12 20:56:06,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 1961. [2020-10-12 20:56:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-10-12 20:56:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 3001 transitions. [2020-10-12 20:56:06,058 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 3001 transitions. Word has length 124 [2020-10-12 20:56:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:06,058 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 3001 transitions. [2020-10-12 20:56:06,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:56:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 3001 transitions. [2020-10-12 20:56:06,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:56:06,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:06,061 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, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:06,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-12 20:56:06,061 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:06,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1837082608, now seen corresponding path program 1 times [2020-10-12 20:56:06,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:06,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050962681] [2020-10-12 20:56:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:06,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:10,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:10,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:56:10,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:10,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4890 [2020-10-12 20:56:10,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:10,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:56:10,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 20:56:10,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 20:56:10,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:11,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:11,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:11,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:11,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:11,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:11,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:11,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050962681] [2020-10-12 20:56:11,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:11,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:56:11,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500589513] [2020-10-12 20:56:11,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:56:11,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:11,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:56:11,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:11,078 INFO L87 Difference]: Start difference. First operand 1961 states and 3001 transitions. Second operand 6 states. [2020-10-12 20:56:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:12,562 INFO L93 Difference]: Finished difference Result 5399 states and 8297 transitions. [2020-10-12 20:56:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:56:12,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-10-12 20:56:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:12,566 INFO L225 Difference]: With dead ends: 5399 [2020-10-12 20:56:12,566 INFO L226 Difference]: Without dead ends: 3479 [2020-10-12 20:56:12,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:56:12,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2020-10-12 20:56:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3397. [2020-10-12 20:56:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3397 states. [2020-10-12 20:56:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 5235 transitions. [2020-10-12 20:56:12,642 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 5235 transitions. Word has length 124 [2020-10-12 20:56:12,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:12,643 INFO L479 AbstractCegarLoop]: Abstraction has 3397 states and 5235 transitions. [2020-10-12 20:56:12,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:56:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 5235 transitions. [2020-10-12 20:56:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:56:12,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:12,646 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] [2020-10-12 20:56:12,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-12 20:56:12,646 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:12,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:12,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1771988853, now seen corresponding path program 1 times [2020-10-12 20:56:12,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:12,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089481377] [2020-10-12 20:56:12,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:12,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:12,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:12,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:56:12,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-12 20:56:12,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:12,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:12,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:56:12,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:56:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:12,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:12,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:12,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:12,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:12,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:13,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089481377] [2020-10-12 20:56:13,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:13,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:13,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569695693] [2020-10-12 20:56:13,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:13,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:13,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:13,005 INFO L87 Difference]: Start difference. First operand 3397 states and 5235 transitions. Second operand 5 states. [2020-10-12 20:56:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:14,055 INFO L93 Difference]: Finished difference Result 4974 states and 7661 transitions. [2020-10-12 20:56:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:14,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-12 20:56:14,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:14,060 INFO L225 Difference]: With dead ends: 4974 [2020-10-12 20:56:14,060 INFO L226 Difference]: Without dead ends: 3600 [2020-10-12 20:56:14,062 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 [2020-10-12 20:56:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2020-10-12 20:56:14,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3474. [2020-10-12 20:56:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3474 states. [2020-10-12 20:56:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 5368 transitions. [2020-10-12 20:56:14,129 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 5368 transitions. Word has length 127 [2020-10-12 20:56:14,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:14,129 INFO L479 AbstractCegarLoop]: Abstraction has 3474 states and 5368 transitions. [2020-10-12 20:56:14,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 5368 transitions. [2020-10-12 20:56:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 20:56:14,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:14,132 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] [2020-10-12 20:56:14,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-12 20:56:14,133 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:14,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:14,133 INFO L82 PathProgramCache]: Analyzing trace with hash -909927733, now seen corresponding path program 1 times [2020-10-12 20:56:14,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:14,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663572526] [2020-10-12 20:56:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:14,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:14,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:14,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:14,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 20:56:14,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:14,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-12 20:56:14,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:14,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:14,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:56:14,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:56:14,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:14,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:14,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:14,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:14,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:14,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:14,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663572526] [2020-10-12 20:56:14,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:14,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:14,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808004235] [2020-10-12 20:56:14,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:14,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:14,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:14,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:14,468 INFO L87 Difference]: Start difference. First operand 3474 states and 5368 transitions. Second operand 5 states. [2020-10-12 20:56:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:15,490 INFO L93 Difference]: Finished difference Result 5041 states and 7779 transitions. [2020-10-12 20:56:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:15,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 20:56:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:15,495 INFO L225 Difference]: With dead ends: 5041 [2020-10-12 20:56:15,496 INFO L226 Difference]: Without dead ends: 3590 [2020-10-12 20:56:15,498 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 [2020-10-12 20:56:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2020-10-12 20:56:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3428. [2020-10-12 20:56:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3428 states. [2020-10-12 20:56:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5286 transitions. [2020-10-12 20:56:15,565 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5286 transitions. Word has length 128 [2020-10-12 20:56:15,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:15,566 INFO L479 AbstractCegarLoop]: Abstraction has 3428 states and 5286 transitions. [2020-10-12 20:56:15,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5286 transitions. [2020-10-12 20:56:15,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:56:15,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:15,570 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] [2020-10-12 20:56:15,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-12 20:56:15,570 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:15,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1109192373, now seen corresponding path program 1 times [2020-10-12 20:56:15,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:15,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161994251] [2020-10-12 20:56:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:15,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:15,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:20,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 20:56:20,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:56:20,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 20:56:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:56:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:20,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:20,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:20,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:20,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:20,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:20,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 55 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:20,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161994251] [2020-10-12 20:56:20,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:20,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:56:20,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253260452] [2020-10-12 20:56:20,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:56:20,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:20,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:56:20,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:56:20,815 INFO L87 Difference]: Start difference. First operand 3428 states and 5286 transitions. Second operand 9 states. [2020-10-12 20:56:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:23,177 INFO L93 Difference]: Finished difference Result 6787 states and 10441 transitions. [2020-10-12 20:56:23,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:56:23,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-10-12 20:56:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:23,183 INFO L225 Difference]: With dead ends: 6787 [2020-10-12 20:56:23,184 INFO L226 Difference]: Without dead ends: 4121 [2020-10-12 20:56:23,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:56:23,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2020-10-12 20:56:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 3655. [2020-10-12 20:56:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3655 states. [2020-10-12 20:56:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5651 transitions. [2020-10-12 20:56:23,265 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5651 transitions. Word has length 129 [2020-10-12 20:56:23,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:23,265 INFO L479 AbstractCegarLoop]: Abstraction has 3655 states and 5651 transitions. [2020-10-12 20:56:23,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:56:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5651 transitions. [2020-10-12 20:56:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:56:23,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:23,269 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-12 20:56:23,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-12 20:56:23,269 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:23,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:23,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1754318975, now seen corresponding path program 1 times [2020-10-12 20:56:23,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:23,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560700022] [2020-10-12 20:56:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:23,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:28,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:28,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:56:28,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:56:28,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:56:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:56:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:28,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:28,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:28,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:28,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:28,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 8 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 20:56:28,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560700022] [2020-10-12 20:56:28,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:28,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:56:28,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647480160] [2020-10-12 20:56:28,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:56:28,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:28,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:56:28,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:56:28,724 INFO L87 Difference]: Start difference. First operand 3655 states and 5651 transitions. Second operand 9 states. [2020-10-12 20:56:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:30,826 INFO L93 Difference]: Finished difference Result 6616 states and 10152 transitions. [2020-10-12 20:56:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:56:30,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2020-10-12 20:56:30,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:30,832 INFO L225 Difference]: With dead ends: 6616 [2020-10-12 20:56:30,832 INFO L226 Difference]: Without dead ends: 5191 [2020-10-12 20:56:30,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:56:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2020-10-12 20:56:30,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 4274. [2020-10-12 20:56:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4274 states. [2020-10-12 20:56:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6620 transitions. [2020-10-12 20:56:30,947 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6620 transitions. Word has length 130 [2020-10-12 20:56:30,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:30,947 INFO L479 AbstractCegarLoop]: Abstraction has 4274 states and 6620 transitions. [2020-10-12 20:56:30,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:56:30,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6620 transitions. [2020-10-12 20:56:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:56:30,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:30,951 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:30,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-12 20:56:30,951 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:30,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:30,951 INFO L82 PathProgramCache]: Analyzing trace with hash 122781022, now seen corresponding path program 1 times [2020-10-12 20:56:30,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:30,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354158086] [2020-10-12 20:56:30,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:31,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:56:31,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:31,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 20:56:31,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:56:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 20:56:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 20:56:31,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:31,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:31,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:31,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:56:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 20:56:31,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354158086] [2020-10-12 20:56:31,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:31,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:56:31,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024727732] [2020-10-12 20:56:31,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:56:31,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:31,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:56:31,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:56:31,200 INFO L87 Difference]: Start difference. First operand 4274 states and 6620 transitions. Second operand 4 states. [2020-10-12 20:56:31,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:31,969 INFO L93 Difference]: Finished difference Result 12738 states and 19767 transitions. [2020-10-12 20:56:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:56:31,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-12 20:56:31,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:31,979 INFO L225 Difference]: With dead ends: 12738 [2020-10-12 20:56:31,979 INFO L226 Difference]: Without dead ends: 8505 [2020-10-12 20:56:31,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:56:31,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8505 states. [2020-10-12 20:56:32,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8505 to 8505. [2020-10-12 20:56:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8505 states. [2020-10-12 20:56:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8505 states to 8505 states and 13141 transitions. [2020-10-12 20:56:32,225 INFO L78 Accepts]: Start accepts. Automaton has 8505 states and 13141 transitions. Word has length 130 [2020-10-12 20:56:32,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:32,226 INFO L479 AbstractCegarLoop]: Abstraction has 8505 states and 13141 transitions. [2020-10-12 20:56:32,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:56:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 8505 states and 13141 transitions. [2020-10-12 20:56:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 20:56:32,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:32,230 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:56:32,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-12 20:56:32,230 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:32,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:32,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1017591688, now seen corresponding path program 1 times [2020-10-12 20:56:32,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:32,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959550973] [2020-10-12 20:56:32,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:32,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:32,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 20:56:32,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:32,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 20:56:32,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:32,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:56:32,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:56:32,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 20:56:32,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:32,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:32,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:32,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 20:56:32,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959550973] [2020-10-12 20:56:32,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:32,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:56:32,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342012961] [2020-10-12 20:56:32,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:56:32,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:32,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:56:32,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:56:32,430 INFO L87 Difference]: Start difference. First operand 8505 states and 13141 transitions. Second operand 4 states. [2020-10-12 20:56:33,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:33,163 INFO L93 Difference]: Finished difference Result 15586 states and 24108 transitions. [2020-10-12 20:56:33,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:56:33,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-12 20:56:33,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:33,176 INFO L225 Difference]: With dead ends: 15586 [2020-10-12 20:56:33,176 INFO L226 Difference]: Without dead ends: 12738 [2020-10-12 20:56:33,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:56:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12738 states. [2020-10-12 20:56:33,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12738 to 12736. [2020-10-12 20:56:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12736 states. [2020-10-12 20:56:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12736 states to 12736 states and 19700 transitions. [2020-10-12 20:56:33,464 INFO L78 Accepts]: Start accepts. Automaton has 12736 states and 19700 transitions. Word has length 132 [2020-10-12 20:56:33,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:33,464 INFO L479 AbstractCegarLoop]: Abstraction has 12736 states and 19700 transitions. [2020-10-12 20:56:33,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:56:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 12736 states and 19700 transitions. [2020-10-12 20:56:33,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-12 20:56:33,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:33,469 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:56:33,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-12 20:56:33,469 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:33,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1892823577, now seen corresponding path program 1 times [2020-10-12 20:56:33,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:33,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732576719] [2020-10-12 20:56:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:33,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:33,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 20:56:33,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:33,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 20:56:33,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:56:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-12 20:56:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:56:33,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:33,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:33,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:33,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:33,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:33,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:33,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:56:33,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732576719] [2020-10-12 20:56:33,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:33,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:56:33,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547125320] [2020-10-12 20:56:33,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:56:33,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:33,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:56:33,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:56:33,718 INFO L87 Difference]: Start difference. First operand 12736 states and 19700 transitions. Second operand 4 states. [2020-10-12 20:56:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:34,525 INFO L93 Difference]: Finished difference Result 14163 states and 21908 transitions. [2020-10-12 20:56:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:56:34,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-12 20:56:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:34,540 INFO L225 Difference]: With dead ends: 14163 [2020-10-12 20:56:34,540 INFO L226 Difference]: Without dead ends: 14161 [2020-10-12 20:56:34,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:56:34,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14161 states. [2020-10-12 20:56:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14161 to 14159. [2020-10-12 20:56:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14159 states. [2020-10-12 20:56:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14159 states to 14159 states and 21894 transitions. [2020-10-12 20:56:34,887 INFO L78 Accepts]: Start accepts. Automaton has 14159 states and 21894 transitions. Word has length 133 [2020-10-12 20:56:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:34,887 INFO L479 AbstractCegarLoop]: Abstraction has 14159 states and 21894 transitions. [2020-10-12 20:56:34,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:56:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 14159 states and 21894 transitions. [2020-10-12 20:56:34,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 20:56:34,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:34,893 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:56:34,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-12 20:56:34,893 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:34,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:34,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1689661926, now seen corresponding path program 1 times [2020-10-12 20:56:34,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:34,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480812796] [2020-10-12 20:56:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:35,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:35,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 20:56:35,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:35,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-12 20:56:35,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:56:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:56:35,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:35,703 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-12 20:56:35,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:35,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:35,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:35,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:35,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:35,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:35,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:56:35,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480812796] [2020-10-12 20:56:35,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:35,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:35,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537070237] [2020-10-12 20:56:35,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:35,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:35,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:35,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:35,764 INFO L87 Difference]: Start difference. First operand 14159 states and 21894 transitions. Second operand 5 states. [2020-10-12 20:56:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:37,046 INFO L93 Difference]: Finished difference Result 30617 states and 47358 transitions. [2020-10-12 20:56:37,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:37,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-12 20:56:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:37,064 INFO L225 Difference]: With dead ends: 30617 [2020-10-12 20:56:37,064 INFO L226 Difference]: Without dead ends: 16499 [2020-10-12 20:56:37,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:37,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16499 states. [2020-10-12 20:56:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16499 to 15259. [2020-10-12 20:56:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15259 states. [2020-10-12 20:56:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15259 states to 15259 states and 23754 transitions. [2020-10-12 20:56:37,422 INFO L78 Accepts]: Start accepts. Automaton has 15259 states and 23754 transitions. Word has length 138 [2020-10-12 20:56:37,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:37,422 INFO L479 AbstractCegarLoop]: Abstraction has 15259 states and 23754 transitions. [2020-10-12 20:56:37,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 15259 states and 23754 transitions. [2020-10-12 20:56:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-12 20:56:37,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:37,429 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, 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] [2020-10-12 20:56:37,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-12 20:56:37,429 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:37,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1000321233, now seen corresponding path program 1 times [2020-10-12 20:56:37,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:37,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367871507] [2020-10-12 20:56:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:37,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:38,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:41,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:41,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 20:56:41,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:41,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3752 [2020-10-12 20:56:41,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:41,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:56:41,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:56:41,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:56:41,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:41,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:41,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:41,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:41,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:41,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:41,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:41,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367871507] [2020-10-12 20:56:41,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:41,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:41,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649287124] [2020-10-12 20:56:41,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:41,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:41,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:41,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:41,288 INFO L87 Difference]: Start difference. First operand 15259 states and 23754 transitions. Second operand 5 states. [2020-10-12 20:56:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:42,669 INFO L93 Difference]: Finished difference Result 21865 states and 33891 transitions. [2020-10-12 20:56:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:42,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-12 20:56:42,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:42,686 INFO L225 Difference]: With dead ends: 21865 [2020-10-12 20:56:42,686 INFO L226 Difference]: Without dead ends: 15651 [2020-10-12 20:56:42,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:42,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15651 states. [2020-10-12 20:56:43,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15651 to 15259. [2020-10-12 20:56:43,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15259 states. [2020-10-12 20:56:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15259 states to 15259 states and 23746 transitions. [2020-10-12 20:56:43,660 INFO L78 Accepts]: Start accepts. Automaton has 15259 states and 23746 transitions. Word has length 141 [2020-10-12 20:56:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:43,660 INFO L479 AbstractCegarLoop]: Abstraction has 15259 states and 23746 transitions. [2020-10-12 20:56:43,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand 15259 states and 23746 transitions. [2020-10-12 20:56:43,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 20:56:43,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:43,667 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, 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] [2020-10-12 20:56:43,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-12 20:56:43,667 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:43,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:43,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2023019570, now seen corresponding path program 1 times [2020-10-12 20:56:43,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:43,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658892854] [2020-10-12 20:56:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:48,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 20:56:48,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:48,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:56:48,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:56:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:56:48,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:48,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:48,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:48,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 23 proven. 64 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:48,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658892854] [2020-10-12 20:56:48,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:48,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:56:48,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522596574] [2020-10-12 20:56:48,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:56:48,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:48,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:56:48,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:56:48,935 INFO L87 Difference]: Start difference. First operand 15259 states and 23746 transitions. Second operand 9 states.