/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.12.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:56:07,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:56:07,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:56:07,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:56:07,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:56:07,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:56:07,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:56:07,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:56:07,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:56:07,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:56:07,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:56:07,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:56:07,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:56:07,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:56:07,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:56:07,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:56:07,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:56:07,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:56:07,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:56:07,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:56:07,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:56:07,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:56:07,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:56:07,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:56:07,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:56:07,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:56:07,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:56:07,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:56:07,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:56:07,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:56:07,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:56:07,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:56:07,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:56:07,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:56:07,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:56:07,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:56:07,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:56:07,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:56:07,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:56:07,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:56:07,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:56:07,124 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 20:56:07,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:56:07,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:56:07,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:56:07,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:56:07,165 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:56:07,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:56:07,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:56:07,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:56:07,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:56:07,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:56:07,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:56:07,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:56:07,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:56:07,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:56:07,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:56:07,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:56:07,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:56:07,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:56:07,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:56:07,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:56:07,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:56:07,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:56:07,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:56:07,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:56:07,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:56:07,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:56:07,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:56:07,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:56:07,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:56:07,171 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 20:56:07,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:56:07,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:56:07,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:56:07,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:56:07,516 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:56:07,517 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.12.i.cil-2.c [2020-10-12 20:56:07,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dae5a338c/2855c3eb46bc4f7da300d174d3861e75/FLAGaffd92450 [2020-10-12 20:56:08,280 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:56:08,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.12.i.cil-2.c [2020-10-12 20:56:08,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dae5a338c/2855c3eb46bc4f7da300d174d3861e75/FLAGaffd92450 [2020-10-12 20:56:08,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dae5a338c/2855c3eb46bc4f7da300d174d3861e75 [2020-10-12 20:56:08,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:56:08,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:56:08,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:56:08,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:56:08,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:56:08,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:56:08" (1/1) ... [2020-10-12 20:56:08,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593f1449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:08, skipping insertion in model container [2020-10-12 20:56:08,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:56:08" (1/1) ... [2020-10-12 20:56:08,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:56:08,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:56:09,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:56:09,165 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:56:09,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:56:09,353 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:56:09,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:09 WrapperNode [2020-10-12 20:56:09,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:56:09,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:56:09,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:56:09,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:56:09,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:09" (1/1) ... [2020-10-12 20:56:09,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:09" (1/1) ... [2020-10-12 20:56:09,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:09" (1/1) ... [2020-10-12 20:56:09,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:09" (1/1) ... [2020-10-12 20:56:09,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:09" (1/1) ... [2020-10-12 20:56:09,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:09" (1/1) ... [2020-10-12 20:56:09,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:09" (1/1) ... [2020-10-12 20:56:09,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:56:09,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:56:09,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:56:09,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:56:09,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:09" (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 20:56:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:56:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:56:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:56:09,583 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:56:09,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:56:09,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:56:09,583 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:56:09,584 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:56:09,585 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:56:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:56:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:56:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:56:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:56:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:56:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:56:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:56:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:56:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:56:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:56:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:56:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:56:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:56:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:56:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:56:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:56:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:56:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:56:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:56:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:56:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:56:10,083 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:56:10,821 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:56:10,821 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:56:10,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:56:10,846 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:56:10,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:56:10 BoogieIcfgContainer [2020-10-12 20:56:10,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:56:10,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:56:10,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:56:10,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:56:10,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:56:08" (1/3) ... [2020-10-12 20:56:10,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f19bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:56:10, skipping insertion in model container [2020-10-12 20:56:10,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:56:09" (2/3) ... [2020-10-12 20:56:10,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f19bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:56:10, skipping insertion in model container [2020-10-12 20:56:10,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:56:10" (3/3) ... [2020-10-12 20:56:10,859 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-2.c [2020-10-12 20:56:10,870 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:56:10,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:56:10,893 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:56:10,919 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:56:10,919 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:56:10,919 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:56:10,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:56:10,919 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:56:10,920 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:56:10,920 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:56:10,920 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:56:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-10-12 20:56:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 20:56:10,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:10,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:10,956 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:10,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:10,963 INFO L82 PathProgramCache]: Analyzing trace with hash -360446002, now seen corresponding path program 1 times [2020-10-12 20:56:10,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:10,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694957773] [2020-10-12 20:56:10,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:12,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:12,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 20:56:12,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:12,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-10-12 20:56:12,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:56:12,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:56:12,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:12,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:12,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:12,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:56:12,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:12,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:12,255 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 20:56:12,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694957773] [2020-10-12 20:56:12,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:12,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:12,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239477716] [2020-10-12 20:56:12,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:12,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:12,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:12,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:12,284 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 5 states. [2020-10-12 20:56:13,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:13,364 INFO L93 Difference]: Finished difference Result 339 states and 570 transitions. [2020-10-12 20:56:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:13,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-12 20:56:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:13,379 INFO L225 Difference]: With dead ends: 339 [2020-10-12 20:56:13,379 INFO L226 Difference]: Without dead ends: 172 [2020-10-12 20:56:13,383 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 20:56:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-12 20:56:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 155. [2020-10-12 20:56:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-12 20:56:13,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 238 transitions. [2020-10-12 20:56:13,434 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 238 transitions. Word has length 48 [2020-10-12 20:56:13,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:13,435 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 238 transitions. [2020-10-12 20:56:13,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 238 transitions. [2020-10-12 20:56:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 20:56:13,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:13,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:13,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:56:13,439 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:13,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:13,439 INFO L82 PathProgramCache]: Analyzing trace with hash 905299413, now seen corresponding path program 1 times [2020-10-12 20:56:13,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:13,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687575207] [2020-10-12 20:56:13,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:13,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:13,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:14,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:14,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 20:56:14,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:14,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1487 [2020-10-12 20:56:14,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:56:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:56:15,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:15,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:15,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:15,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:15,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:15,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:56:15,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:15,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:15,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:15,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:15,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:15,096 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 20:56:15,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687575207] [2020-10-12 20:56:15,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:15,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:15,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148416164] [2020-10-12 20:56:15,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:15,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:15,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:15,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:15,118 INFO L87 Difference]: Start difference. First operand 155 states and 238 transitions. Second operand 5 states. [2020-10-12 20:56:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:15,835 INFO L93 Difference]: Finished difference Result 302 states and 461 transitions. [2020-10-12 20:56:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:15,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-12 20:56:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:15,838 INFO L225 Difference]: With dead ends: 302 [2020-10-12 20:56:15,838 INFO L226 Difference]: Without dead ends: 172 [2020-10-12 20:56:15,840 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 20:56:15,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-12 20:56:15,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 155. [2020-10-12 20:56:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-12 20:56:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 237 transitions. [2020-10-12 20:56:15,854 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 237 transitions. Word has length 61 [2020-10-12 20:56:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:15,854 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 237 transitions. [2020-10-12 20:56:15,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 237 transitions. [2020-10-12 20:56:15,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 20:56:15,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:15,857 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:15,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:56:15,858 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:15,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:15,858 INFO L82 PathProgramCache]: Analyzing trace with hash -743473923, now seen corresponding path program 1 times [2020-10-12 20:56:15,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:15,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36970904] [2020-10-12 20:56:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:15,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:19,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:19,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 20:56:19,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:19,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3949 [2020-10-12 20:56:19,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:56:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:56:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:19,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:19,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:19,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:19,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:19,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:56:19,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:19,943 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 20:56:19,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36970904] [2020-10-12 20:56:19,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:19,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:19,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576368332] [2020-10-12 20:56:19,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:19,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:19,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:19,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:19,946 INFO L87 Difference]: Start difference. First operand 155 states and 237 transitions. Second operand 5 states. [2020-10-12 20:56:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:20,629 INFO L93 Difference]: Finished difference Result 302 states and 460 transitions. [2020-10-12 20:56:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:20,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-12 20:56:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:20,632 INFO L225 Difference]: With dead ends: 302 [2020-10-12 20:56:20,632 INFO L226 Difference]: Without dead ends: 172 [2020-10-12 20:56:20,633 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 20:56:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-12 20:56:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2020-10-12 20:56:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-12 20:56:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 249 transitions. [2020-10-12 20:56:20,645 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 249 transitions. Word has length 62 [2020-10-12 20:56:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:20,645 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 249 transitions. [2020-10-12 20:56:20,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:20,646 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 249 transitions. [2020-10-12 20:56:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 20:56:20,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:20,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:20,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:56:20,649 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:20,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1368196908, now seen corresponding path program 1 times [2020-10-12 20:56:20,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:20,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338783460] [2020-10-12 20:56:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:21,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:21,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:21,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 20:56:21,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:21,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-12 20:56:21,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:21,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:21,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:56:21,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:21,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:21,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:21,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:21,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:56:21,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:21,714 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 20:56:21,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338783460] [2020-10-12 20:56:21,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:21,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:21,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218767224] [2020-10-12 20:56:21,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:21,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:21,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:21,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:21,717 INFO L87 Difference]: Start difference. First operand 165 states and 249 transitions. Second operand 5 states. [2020-10-12 20:56:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:22,331 INFO L93 Difference]: Finished difference Result 300 states and 457 transitions. [2020-10-12 20:56:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:22,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-12 20:56:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:22,333 INFO L225 Difference]: With dead ends: 300 [2020-10-12 20:56:22,333 INFO L226 Difference]: Without dead ends: 170 [2020-10-12 20:56:22,338 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 20:56:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-12 20:56:22,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 165. [2020-10-12 20:56:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-12 20:56:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2020-10-12 20:56:22,352 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 62 [2020-10-12 20:56:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:22,352 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2020-10-12 20:56:22,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2020-10-12 20:56:22,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 20:56:22,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:22,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:22,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:56:22,357 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:22,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:22,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1227470221, now seen corresponding path program 1 times [2020-10-12 20:56:22,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:22,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079745213] [2020-10-12 20:56:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:22,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:22,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 20:56:22,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-12 20:56:22,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:56:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:56:22,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:22,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:22,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:22,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:22,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:22,883 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 20:56:22,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079745213] [2020-10-12 20:56:22,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:22,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:22,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23371956] [2020-10-12 20:56:22,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:22,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:22,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:22,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:22,885 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand 5 states. [2020-10-12 20:56:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:23,538 INFO L93 Difference]: Finished difference Result 299 states and 455 transitions. [2020-10-12 20:56:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:23,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-12 20:56:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:23,541 INFO L225 Difference]: With dead ends: 299 [2020-10-12 20:56:23,541 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 20:56:23,542 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 20:56:23,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 20:56:23,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2020-10-12 20:56:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-12 20:56:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 247 transitions. [2020-10-12 20:56:23,550 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 247 transitions. Word has length 62 [2020-10-12 20:56:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:23,550 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 247 transitions. [2020-10-12 20:56:23,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 247 transitions. [2020-10-12 20:56:23,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:56:23,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:23,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:23,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:56:23,552 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:23,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1459588378, now seen corresponding path program 1 times [2020-10-12 20:56:23,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:23,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559570100] [2020-10-12 20:56:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:23,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:25,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:28,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:28,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:56:28,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:56:28,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:56:28,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:56:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:56:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:56:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:28,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:28,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:28,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:56:28,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:28,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:28,787 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 20:56:28,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559570100] [2020-10-12 20:56:28,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:28,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:56:28,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681148371] [2020-10-12 20:56:28,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:56:28,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:56:28,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:56:28,790 INFO L87 Difference]: Start difference. First operand 165 states and 247 transitions. Second operand 8 states. [2020-10-12 20:56:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:30,302 INFO L93 Difference]: Finished difference Result 446 states and 681 transitions. [2020-10-12 20:56:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:56:30,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-12 20:56:30,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:30,306 INFO L225 Difference]: With dead ends: 446 [2020-10-12 20:56:30,306 INFO L226 Difference]: Without dead ends: 316 [2020-10-12 20:56:30,307 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 20:56:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-12 20:56:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 270. [2020-10-12 20:56:30,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-12 20:56:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 417 transitions. [2020-10-12 20:56:30,318 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 417 transitions. Word has length 63 [2020-10-12 20:56:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:30,318 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 417 transitions. [2020-10-12 20:56:30,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:56:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 417 transitions. [2020-10-12 20:56:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:56:30,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:30,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:30,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:56:30,320 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:30,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:30,321 INFO L82 PathProgramCache]: Analyzing trace with hash 13790046, now seen corresponding path program 1 times [2020-10-12 20:56:30,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:30,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620569733] [2020-10-12 20:56:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:30,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:56:30,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:30,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-12 20:56:30,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:30,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:56:30,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:30,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:30,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:56:30,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:30,768 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 20:56:30,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620569733] [2020-10-12 20:56:30,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:30,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:30,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391419875] [2020-10-12 20:56:30,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:30,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:30,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:30,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:30,775 INFO L87 Difference]: Start difference. First operand 270 states and 417 transitions. Second operand 5 states. [2020-10-12 20:56:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:31,449 INFO L93 Difference]: Finished difference Result 589 states and 919 transitions. [2020-10-12 20:56:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:31,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:56:31,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:31,453 INFO L225 Difference]: With dead ends: 589 [2020-10-12 20:56:31,453 INFO L226 Difference]: Without dead ends: 354 [2020-10-12 20:56:31,454 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 20:56:31,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-12 20:56:31,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 314. [2020-10-12 20:56:31,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-12 20:56:31,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 493 transitions. [2020-10-12 20:56:31,469 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 493 transitions. Word has length 65 [2020-10-12 20:56:31,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:31,469 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 493 transitions. [2020-10-12 20:56:31,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 493 transitions. [2020-10-12 20:56:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 20:56:31,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:31,471 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:31,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:56:31,472 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:31,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:31,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1056300611, now seen corresponding path program 1 times [2020-10-12 20:56:31,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:31,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516764356] [2020-10-12 20:56:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:32,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:36,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:36,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 20:56:36,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:36,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:56:36,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:56:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:56:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:56:36,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:36,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:36,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:36,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:36,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:36,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:36,629 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 20:56:36,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516764356] [2020-10-12 20:56:36,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:36,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:56:36,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596803411] [2020-10-12 20:56:36,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:56:36,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:36,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:56:36,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:36,633 INFO L87 Difference]: Start difference. First operand 314 states and 493 transitions. Second operand 6 states. [2020-10-12 20:56:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:37,403 INFO L93 Difference]: Finished difference Result 513 states and 801 transitions. [2020-10-12 20:56:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:56:37,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-12 20:56:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:37,407 INFO L225 Difference]: With dead ends: 513 [2020-10-12 20:56:37,407 INFO L226 Difference]: Without dead ends: 331 [2020-10-12 20:56:37,408 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 20:56:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-12 20:56:37,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 321. [2020-10-12 20:56:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-12 20:56:37,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 501 transitions. [2020-10-12 20:56:37,419 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 501 transitions. Word has length 76 [2020-10-12 20:56:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:37,420 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 501 transitions. [2020-10-12 20:56:37,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:56:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 501 transitions. [2020-10-12 20:56:37,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 20:56:37,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:37,422 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:37,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:56:37,422 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:37,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:37,422 INFO L82 PathProgramCache]: Analyzing trace with hash 930108841, now seen corresponding path program 1 times [2020-10-12 20:56:37,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:37,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952544132] [2020-10-12 20:56:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:37,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:42,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:42,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 20:56:42,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:42,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 20:56:42,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:56:42,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:42,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:42,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:42,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:42,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:42,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:42,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:42,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:42,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:42,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:42,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:42,544 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 20:56:42,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952544132] [2020-10-12 20:56:42,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:42,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:42,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610367868] [2020-10-12 20:56:42,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:42,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:42,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:42,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:42,546 INFO L87 Difference]: Start difference. First operand 321 states and 501 transitions. Second operand 5 states. [2020-10-12 20:56:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:43,343 INFO L93 Difference]: Finished difference Result 515 states and 801 transitions. [2020-10-12 20:56:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:43,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-12 20:56:43,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:43,347 INFO L225 Difference]: With dead ends: 515 [2020-10-12 20:56:43,347 INFO L226 Difference]: Without dead ends: 325 [2020-10-12 20:56:43,349 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 20:56:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-12 20:56:43,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2020-10-12 20:56:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-12 20:56:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 500 transitions. [2020-10-12 20:56:43,365 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 500 transitions. Word has length 76 [2020-10-12 20:56:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:43,365 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 500 transitions. [2020-10-12 20:56:43,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 500 transitions. [2020-10-12 20:56:43,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:56:43,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:43,367 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:43,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:56:43,368 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:43,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1825744394, now seen corresponding path program 1 times [2020-10-12 20:56:43,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:43,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446590619] [2020-10-12 20:56:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:43,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:56:48,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:56:48,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:56:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:48,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:48,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:48,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:48,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:48,469 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 20:56:48,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446590619] [2020-10-12 20:56:48,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:48,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:48,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405879519] [2020-10-12 20:56:48,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:48,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:48,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:48,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:48,472 INFO L87 Difference]: Start difference. First operand 321 states and 500 transitions. Second operand 5 states. [2020-10-12 20:56:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:49,189 INFO L93 Difference]: Finished difference Result 515 states and 800 transitions. [2020-10-12 20:56:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:49,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-12 20:56:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:49,192 INFO L225 Difference]: With dead ends: 515 [2020-10-12 20:56:49,192 INFO L226 Difference]: Without dead ends: 325 [2020-10-12 20:56:49,193 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 20:56:49,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-12 20:56:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2020-10-12 20:56:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-12 20:56:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 499 transitions. [2020-10-12 20:56:49,204 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 499 transitions. Word has length 77 [2020-10-12 20:56:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:49,205 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 499 transitions. [2020-10-12 20:56:49,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 499 transitions. [2020-10-12 20:56:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:56:49,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:49,206 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:49,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:56:49,207 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:49,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:49,207 INFO L82 PathProgramCache]: Analyzing trace with hash 30235300, now seen corresponding path program 1 times [2020-10-12 20:56:49,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:49,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542294055] [2020-10-12 20:56:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:49,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:50,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:53,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:53,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:56:53,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4349 [2020-10-12 20:56:53,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:56:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:53,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:53,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:53,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:53,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:53,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:53,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:53,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:53,638 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 20:56:53,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542294055] [2020-10-12 20:56:53,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:53,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:53,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315878166] [2020-10-12 20:56:53,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:53,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:53,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:53,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:53,640 INFO L87 Difference]: Start difference. First operand 321 states and 499 transitions. Second operand 5 states. [2020-10-12 20:56:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:54,284 INFO L93 Difference]: Finished difference Result 515 states and 799 transitions. [2020-10-12 20:56:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:54,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:56:54,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:54,288 INFO L225 Difference]: With dead ends: 515 [2020-10-12 20:56:54,288 INFO L226 Difference]: Without dead ends: 325 [2020-10-12 20:56:54,291 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 20:56:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-12 20:56:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2020-10-12 20:56:54,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-12 20:56:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 498 transitions. [2020-10-12 20:56:54,306 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 498 transitions. Word has length 78 [2020-10-12 20:56:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:54,306 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 498 transitions. [2020-10-12 20:56:54,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:54,306 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 498 transitions. [2020-10-12 20:56:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:56:54,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:54,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:54,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:56:54,309 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:54,309 INFO L82 PathProgramCache]: Analyzing trace with hash 539077701, now seen corresponding path program 1 times [2020-10-12 20:56:54,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:54,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840041327] [2020-10-12 20:56:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:56:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-10-12 20:56:55,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:56:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:55,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:55,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:55,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:55,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:55,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:55,126 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 20:56:55,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840041327] [2020-10-12 20:56:55,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:55,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:55,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428365492] [2020-10-12 20:56:55,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:55,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:55,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:55,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:55,129 INFO L87 Difference]: Start difference. First operand 321 states and 498 transitions. Second operand 5 states. [2020-10-12 20:56:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:55,798 INFO L93 Difference]: Finished difference Result 530 states and 811 transitions. [2020-10-12 20:56:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:55,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:56:55,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:55,801 INFO L225 Difference]: With dead ends: 530 [2020-10-12 20:56:55,802 INFO L226 Difference]: Without dead ends: 369 [2020-10-12 20:56:55,803 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 20:56:55,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-12 20:56:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 321. [2020-10-12 20:56:55,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-12 20:56:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 496 transitions. [2020-10-12 20:56:55,816 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 496 transitions. Word has length 78 [2020-10-12 20:56:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:55,817 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 496 transitions. [2020-10-12 20:56:55,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 496 transitions. [2020-10-12 20:56:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:56:55,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:55,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:55,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:56:55,819 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:55,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:55,820 INFO L82 PathProgramCache]: Analyzing trace with hash 788554893, now seen corresponding path program 1 times [2020-10-12 20:56:55,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:55,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665697697] [2020-10-12 20:56:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:57,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:57,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:00,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:00,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:57:00,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:57:00,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:57:00,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:57:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:57:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:57:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:00,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:00,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:00,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:00,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:00,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:00,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:00,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:00,919 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 20:57:00,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665697697] [2020-10-12 20:57:00,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:00,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:00,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622775389] [2020-10-12 20:57:00,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:00,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:00,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:00,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:00,921 INFO L87 Difference]: Start difference. First operand 321 states and 496 transitions. Second operand 5 states. [2020-10-12 20:57:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:01,610 INFO L93 Difference]: Finished difference Result 530 states and 808 transitions. [2020-10-12 20:57:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:01,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:57:01,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:01,614 INFO L225 Difference]: With dead ends: 530 [2020-10-12 20:57:01,614 INFO L226 Difference]: Without dead ends: 359 [2020-10-12 20:57:01,615 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 20:57:01,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-12 20:57:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 330. [2020-10-12 20:57:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-12 20:57:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 505 transitions. [2020-10-12 20:57:01,626 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 505 transitions. Word has length 79 [2020-10-12 20:57:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:01,626 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 505 transitions. [2020-10-12 20:57:01,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 505 transitions. [2020-10-12 20:57:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:57:01,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:01,628 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:01,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:57:01,628 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:01,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:01,629 INFO L82 PathProgramCache]: Analyzing trace with hash 163831908, now seen corresponding path program 1 times [2020-10-12 20:57:01,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:01,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303321787] [2020-10-12 20:57:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:01,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:01,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:02,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:02,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:57:02,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:02,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-12 20:57:02,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:57:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:57:02,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:02,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:02,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:02,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:02,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:02,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:57:02,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303321787] [2020-10-12 20:57:02,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:02,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:02,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171064634] [2020-10-12 20:57:02,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:02,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:02,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:02,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:02,327 INFO L87 Difference]: Start difference. First operand 330 states and 505 transitions. Second operand 5 states. [2020-10-12 20:57:03,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:03,201 INFO L93 Difference]: Finished difference Result 617 states and 945 transitions. [2020-10-12 20:57:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:03,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:57:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:03,205 INFO L225 Difference]: With dead ends: 617 [2020-10-12 20:57:03,205 INFO L226 Difference]: Without dead ends: 447 [2020-10-12 20:57:03,207 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 20:57:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-12 20:57:03,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 369. [2020-10-12 20:57:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-12 20:57:03,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 577 transitions. [2020-10-12 20:57:03,219 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 577 transitions. Word has length 79 [2020-10-12 20:57:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:03,219 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 577 transitions. [2020-10-12 20:57:03,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 577 transitions. [2020-10-12 20:57:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:57:03,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:03,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:03,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:57:03,222 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:03,222 INFO L82 PathProgramCache]: Analyzing trace with hash 304558595, now seen corresponding path program 1 times [2020-10-12 20:57:03,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:03,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860597000] [2020-10-12 20:57:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:03,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:03,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:03,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:57:03,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-12 20:57:03,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:57:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:57:03,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:03,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:03,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:03,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:03,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:03,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:03,613 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 20:57:03,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860597000] [2020-10-12 20:57:03,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:03,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:03,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883112571] [2020-10-12 20:57:03,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:03,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:03,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:03,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:03,615 INFO L87 Difference]: Start difference. First operand 369 states and 577 transitions. Second operand 5 states. [2020-10-12 20:57:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:04,256 INFO L93 Difference]: Finished difference Result 740 states and 1160 transitions. [2020-10-12 20:57:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:04,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:57:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:04,265 INFO L225 Difference]: With dead ends: 740 [2020-10-12 20:57:04,265 INFO L226 Difference]: Without dead ends: 396 [2020-10-12 20:57:04,266 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 20:57:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-12 20:57:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 369. [2020-10-12 20:57:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-12 20:57:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 575 transitions. [2020-10-12 20:57:04,286 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 575 transitions. Word has length 79 [2020-10-12 20:57:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:04,286 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 575 transitions. [2020-10-12 20:57:04,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 575 transitions. [2020-10-12 20:57:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:57:04,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:04,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:04,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:57:04,289 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:04,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:04,289 INFO L82 PathProgramCache]: Analyzing trace with hash 543551294, now seen corresponding path program 1 times [2020-10-12 20:57:04,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:04,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713806493] [2020-10-12 20:57:04,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:04,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:04,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:05,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:05,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:57:05,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:05,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-10-12 20:57:05,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:57:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:57:05,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:05,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:05,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:05,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:05,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:05,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:05,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:05,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:05,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:05,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:57:05,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713806493] [2020-10-12 20:57:05,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:05,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:05,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875950435] [2020-10-12 20:57:05,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:05,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:05,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:05,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:05,260 INFO L87 Difference]: Start difference. First operand 369 states and 575 transitions. Second operand 5 states. [2020-10-12 20:57:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:06,057 INFO L93 Difference]: Finished difference Result 649 states and 1004 transitions. [2020-10-12 20:57:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:06,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:57:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:06,060 INFO L225 Difference]: With dead ends: 649 [2020-10-12 20:57:06,060 INFO L226 Difference]: Without dead ends: 440 [2020-10-12 20:57:06,061 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 20:57:06,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-12 20:57:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 370. [2020-10-12 20:57:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-12 20:57:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 576 transitions. [2020-10-12 20:57:06,073 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 576 transitions. Word has length 80 [2020-10-12 20:57:06,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:06,074 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 576 transitions. [2020-10-12 20:57:06,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 576 transitions. [2020-10-12 20:57:06,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:57:06,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:06,075 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:06,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:57:06,076 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:06,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:06,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1748409005, now seen corresponding path program 1 times [2020-10-12 20:57:06,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:06,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984838689] [2020-10-12 20:57:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:06,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:06,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:06,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:10,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:11,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:11,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:57:11,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:57:11,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:57:11,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:57:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:57:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:57:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:11,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:11,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:11,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:11,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:11,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:11,275 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 20:57:11,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984838689] [2020-10-12 20:57:11,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:11,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:11,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287690943] [2020-10-12 20:57:11,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:11,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:11,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:11,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:11,278 INFO L87 Difference]: Start difference. First operand 370 states and 576 transitions. Second operand 5 states. [2020-10-12 20:57:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:12,179 INFO L93 Difference]: Finished difference Result 806 states and 1260 transitions. [2020-10-12 20:57:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:12,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:57:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:12,184 INFO L225 Difference]: With dead ends: 806 [2020-10-12 20:57:12,184 INFO L226 Difference]: Without dead ends: 586 [2020-10-12 20:57:12,185 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 20:57:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-12 20:57:12,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 403. [2020-10-12 20:57:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-12 20:57:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 625 transitions. [2020-10-12 20:57:12,210 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 625 transitions. Word has length 80 [2020-10-12 20:57:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:12,210 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 625 transitions. [2020-10-12 20:57:12,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:12,211 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 625 transitions. [2020-10-12 20:57:12,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:57:12,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:12,213 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:57:12,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:57:12,213 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:12,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:12,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1264412707, now seen corresponding path program 1 times [2020-10-12 20:57:12,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:12,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846614449] [2020-10-12 20:57:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:13,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:13,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:57:13,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-12 20:57:13,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:57:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:13,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:13,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:13,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:13,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 20:57:13,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846614449] [2020-10-12 20:57:13,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:13,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:13,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224733438] [2020-10-12 20:57:13,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:13,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:13,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:13,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:13,643 INFO L87 Difference]: Start difference. First operand 403 states and 625 transitions. Second operand 5 states. [2020-10-12 20:57:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:14,187 INFO L93 Difference]: Finished difference Result 662 states and 1029 transitions. [2020-10-12 20:57:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:14,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:57:14,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:14,191 INFO L225 Difference]: With dead ends: 662 [2020-10-12 20:57:14,191 INFO L226 Difference]: Without dead ends: 406 [2020-10-12 20:57:14,192 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 20:57:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-12 20:57:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 403. [2020-10-12 20:57:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-12 20:57:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 624 transitions. [2020-10-12 20:57:14,206 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 624 transitions. Word has length 80 [2020-10-12 20:57:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:14,206 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 624 transitions. [2020-10-12 20:57:14,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 624 transitions. [2020-10-12 20:57:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:57:14,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:14,208 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 20:57:14,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:57:14,208 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:14,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:14,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1969750860, now seen corresponding path program 1 times [2020-10-12 20:57:14,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:14,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625233012] [2020-10-12 20:57:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:14,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:14,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:14,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:14,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:57:14,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:14,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 20:57:14,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:14,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:14,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:14,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:57:14,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:14,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:14,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:14,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:14,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:14,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:14,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:14,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:14,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:14,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:14,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:14,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:14,486 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 20:57:14,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625233012] [2020-10-12 20:57:14,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:14,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:14,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251377827] [2020-10-12 20:57:14,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:14,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:14,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:14,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:14,488 INFO L87 Difference]: Start difference. First operand 403 states and 624 transitions. Second operand 5 states. [2020-10-12 20:57:15,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:15,528 INFO L93 Difference]: Finished difference Result 983 states and 1537 transitions. [2020-10-12 20:57:15,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:15,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-12 20:57:15,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:15,531 INFO L225 Difference]: With dead ends: 983 [2020-10-12 20:57:15,531 INFO L226 Difference]: Without dead ends: 605 [2020-10-12 20:57:15,532 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 20:57:15,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2020-10-12 20:57:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 483. [2020-10-12 20:57:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-10-12 20:57:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 770 transitions. [2020-10-12 20:57:15,548 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 770 transitions. Word has length 87 [2020-10-12 20:57:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:15,548 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 770 transitions. [2020-10-12 20:57:15,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 770 transitions. [2020-10-12 20:57:15,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:57:15,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:15,550 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 20:57:15,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:57:15,551 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:15,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:15,551 INFO L82 PathProgramCache]: Analyzing trace with hash 953409138, now seen corresponding path program 1 times [2020-10-12 20:57:15,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:15,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236903841] [2020-10-12 20:57:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:15,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:15,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:15,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:15,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:57:15,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:15,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-12 20:57:15,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:57:15,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:16,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:16,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:16,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:16,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:16,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:16,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:16,057 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 20:57:16,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236903841] [2020-10-12 20:57:16,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:16,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:16,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604394903] [2020-10-12 20:57:16,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:16,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:16,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:16,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:16,059 INFO L87 Difference]: Start difference. First operand 483 states and 770 transitions. Second operand 5 states. [2020-10-12 20:57:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:17,115 INFO L93 Difference]: Finished difference Result 1141 states and 1827 transitions. [2020-10-12 20:57:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:17,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-12 20:57:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:17,123 INFO L225 Difference]: With dead ends: 1141 [2020-10-12 20:57:17,123 INFO L226 Difference]: Without dead ends: 683 [2020-10-12 20:57:17,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:17,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-12 20:57:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 481. [2020-10-12 20:57:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-10-12 20:57:17,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 768 transitions. [2020-10-12 20:57:17,141 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 768 transitions. Word has length 87 [2020-10-12 20:57:17,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:17,141 INFO L479 AbstractCegarLoop]: Abstraction has 481 states and 768 transitions. [2020-10-12 20:57:17,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:17,142 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 768 transitions. [2020-10-12 20:57:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:57:17,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:17,144 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:17,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:57:17,144 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:17,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1173005074, now seen corresponding path program 1 times [2020-10-12 20:57:17,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:17,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135044823] [2020-10-12 20:57:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:17,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:17,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:17,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:17,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:57:17,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-12 20:57:17,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:57:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:17,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:17,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:17,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:17,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:17,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:17,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:17,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:17,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:17,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:17,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:17,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:17,436 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 20:57:17,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135044823] [2020-10-12 20:57:17,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:17,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:17,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787358215] [2020-10-12 20:57:17,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:17,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:17,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:17,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:17,438 INFO L87 Difference]: Start difference. First operand 481 states and 768 transitions. Second operand 5 states. [2020-10-12 20:57:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:18,417 INFO L93 Difference]: Finished difference Result 1127 states and 1806 transitions. [2020-10-12 20:57:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:18,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:57:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:18,421 INFO L225 Difference]: With dead ends: 1127 [2020-10-12 20:57:18,421 INFO L226 Difference]: Without dead ends: 671 [2020-10-12 20:57:18,422 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 20:57:18,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-10-12 20:57:18,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 536. [2020-10-12 20:57:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-12 20:57:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 866 transitions. [2020-10-12 20:57:18,440 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 866 transitions. Word has length 88 [2020-10-12 20:57:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:18,440 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 866 transitions. [2020-10-12 20:57:18,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 866 transitions. [2020-10-12 20:57:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:57:18,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:18,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:18,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:57:18,443 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:18,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:18,443 INFO L82 PathProgramCache]: Analyzing trace with hash -749358352, now seen corresponding path program 1 times [2020-10-12 20:57:18,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:18,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315628494] [2020-10-12 20:57:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:18,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:57:18,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:18,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-12 20:57:18,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:18,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:57:18,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:18,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:18,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:18,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:18,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:18,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:18,916 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 20:57:18,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315628494] [2020-10-12 20:57:18,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:18,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:18,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423836745] [2020-10-12 20:57:18,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:18,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:18,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:18,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:18,918 INFO L87 Difference]: Start difference. First operand 536 states and 866 transitions. Second operand 5 states. [2020-10-12 20:57:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:19,948 INFO L93 Difference]: Finished difference Result 1157 states and 1856 transitions. [2020-10-12 20:57:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:19,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:57:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:19,953 INFO L225 Difference]: With dead ends: 1157 [2020-10-12 20:57:19,953 INFO L226 Difference]: Without dead ends: 646 [2020-10-12 20:57:19,957 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 20:57:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2020-10-12 20:57:19,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 456. [2020-10-12 20:57:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-12 20:57:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 720 transitions. [2020-10-12 20:57:19,973 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 720 transitions. Word has length 88 [2020-10-12 20:57:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:19,973 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 720 transitions. [2020-10-12 20:57:19,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:19,974 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 720 transitions. [2020-10-12 20:57:19,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-12 20:57:19,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:19,975 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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 20:57:19,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:57:19,976 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:19,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2079562615, now seen corresponding path program 1 times [2020-10-12 20:57:19,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:19,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396223047] [2020-10-12 20:57:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:20,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:20,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:21,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:21,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 20:57:21,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:21,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-10-12 20:57:21,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:21,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:21,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:57:21,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:57:21,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:21,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:21,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:57:21,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396223047] [2020-10-12 20:57:21,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:21,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:21,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109199777] [2020-10-12 20:57:21,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:21,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:21,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:21,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:21,071 INFO L87 Difference]: Start difference. First operand 456 states and 720 transitions. Second operand 5 states. [2020-10-12 20:57:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:21,873 INFO L93 Difference]: Finished difference Result 782 states and 1232 transitions. [2020-10-12 20:57:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:21,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-12 20:57:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:21,877 INFO L225 Difference]: With dead ends: 782 [2020-10-12 20:57:21,877 INFO L226 Difference]: Without dead ends: 540 [2020-10-12 20:57:21,879 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 20:57:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-12 20:57:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 459. [2020-10-12 20:57:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-12 20:57:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 725 transitions. [2020-10-12 20:57:21,894 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 725 transitions. Word has length 93 [2020-10-12 20:57:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:21,895 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 725 transitions. [2020-10-12 20:57:21,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 725 transitions. [2020-10-12 20:57:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:57:21,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:21,897 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:21,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:57:21,901 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:21,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:21,901 INFO L82 PathProgramCache]: Analyzing trace with hash 10402703, now seen corresponding path program 1 times [2020-10-12 20:57:21,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:21,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257444264] [2020-10-12 20:57:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:21,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:22,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:24,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:24,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:57:24,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:24,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3073 [2020-10-12 20:57:24,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:24,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:24,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:24,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:57:24,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:25,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:25,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:25,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:25,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:25,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:25,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:57:25,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257444264] [2020-10-12 20:57:25,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:25,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:25,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897029382] [2020-10-12 20:57:25,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:25,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:25,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:25,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:25,108 INFO L87 Difference]: Start difference. First operand 459 states and 725 transitions. Second operand 5 states. [2020-10-12 20:57:25,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:25,785 INFO L93 Difference]: Finished difference Result 1333 states and 2117 transitions. [2020-10-12 20:57:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:25,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:57:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:25,790 INFO L225 Difference]: With dead ends: 1333 [2020-10-12 20:57:25,790 INFO L226 Difference]: Without dead ends: 899 [2020-10-12 20:57:25,791 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 20:57:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-10-12 20:57:25,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 897. [2020-10-12 20:57:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-12 20:57:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1404 transitions. [2020-10-12 20:57:25,818 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1404 transitions. Word has length 94 [2020-10-12 20:57:25,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:25,818 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1404 transitions. [2020-10-12 20:57:25,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1404 transitions. [2020-10-12 20:57:25,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:57:25,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:25,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:25,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:57:25,822 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:25,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:25,822 INFO L82 PathProgramCache]: Analyzing trace with hash -550297075, now seen corresponding path program 1 times [2020-10-12 20:57:25,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:25,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166740535] [2020-10-12 20:57:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:25,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:28,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:28,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:57:28,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:28,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3089 [2020-10-12 20:57:28,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:57:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 20:57:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:28,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:28,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:28,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:28,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:28,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:28,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 20:57:28,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166740535] [2020-10-12 20:57:28,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:28,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:28,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350342099] [2020-10-12 20:57:28,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:28,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:28,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:28,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:28,989 INFO L87 Difference]: Start difference. First operand 897 states and 1404 transitions. Second operand 5 states. [2020-10-12 20:57:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:29,613 INFO L93 Difference]: Finished difference Result 1509 states and 2331 transitions. [2020-10-12 20:57:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:29,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:57:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:29,623 INFO L225 Difference]: With dead ends: 1509 [2020-10-12 20:57:29,623 INFO L226 Difference]: Without dead ends: 969 [2020-10-12 20:57:29,625 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 20:57:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-10-12 20:57:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 897. [2020-10-12 20:57:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-12 20:57:29,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1400 transitions. [2020-10-12 20:57:29,653 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1400 transitions. Word has length 94 [2020-10-12 20:57:29,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:29,653 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1400 transitions. [2020-10-12 20:57:29,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:29,654 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1400 transitions. [2020-10-12 20:57:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:57:29,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:29,656 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:29,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:57:29,657 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:29,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:29,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1111231710, now seen corresponding path program 1 times [2020-10-12 20:57:29,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:29,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294490124] [2020-10-12 20:57:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:29,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:29,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:29,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:32,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:34,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:34,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:57:34,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:57:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 20:57:34,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:57:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:57:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 20:57:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:34,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:34,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:34,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:34,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:57:34,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294490124] [2020-10-12 20:57:34,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:57:34,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:57:34,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070594645] [2020-10-12 20:57:34,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:57:34,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:34,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:57:34,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:57:34,907 INFO L87 Difference]: Start difference. First operand 897 states and 1400 transitions. Second operand 9 states. [2020-10-12 20:57:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:36,541 INFO L93 Difference]: Finished difference Result 1930 states and 3002 transitions. [2020-10-12 20:57:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:57:36,542 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-12 20:57:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:36,550 INFO L225 Difference]: With dead ends: 1930 [2020-10-12 20:57:36,551 INFO L226 Difference]: Without dead ends: 1447 [2020-10-12 20:57:36,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:57:36,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2020-10-12 20:57:36,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1012. [2020-10-12 20:57:36,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2020-10-12 20:57:36,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1575 transitions. [2020-10-12 20:57:36,608 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1575 transitions. Word has length 94 [2020-10-12 20:57:36,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:36,609 INFO L479 AbstractCegarLoop]: Abstraction has 1012 states and 1575 transitions. [2020-10-12 20:57:36,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:57:36,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1575 transitions. [2020-10-12 20:57:36,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:57:36,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:36,614 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, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:36,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:57:36,615 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:36,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1671848212, now seen corresponding path program 1 times [2020-10-12 20:57:36,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:36,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607597308] [2020-10-12 20:57:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:38,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:38,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:57:38,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-12 20:57:38,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:57:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:57:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:38,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:38,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:38,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:38,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:38,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:38,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:38,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:38,178 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 20:57:38,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607597308] [2020-10-12 20:57:38,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:38,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:38,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313566091] [2020-10-12 20:57:38,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:38,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:38,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:38,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:38,180 INFO L87 Difference]: Start difference. First operand 1012 states and 1575 transitions. Second operand 5 states. [2020-10-12 20:57:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:38,987 INFO L93 Difference]: Finished difference Result 2473 states and 3874 transitions. [2020-10-12 20:57:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:38,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:57:38,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:39,000 INFO L225 Difference]: With dead ends: 2473 [2020-10-12 20:57:39,001 INFO L226 Difference]: Without dead ends: 1502 [2020-10-12 20:57:39,003 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 20:57:39,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-10-12 20:57:39,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1070. [2020-10-12 20:57:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-10-12 20:57:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1663 transitions. [2020-10-12 20:57:39,040 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1663 transitions. Word has length 95 [2020-10-12 20:57:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:39,040 INFO L479 AbstractCegarLoop]: Abstraction has 1070 states and 1663 transitions. [2020-10-12 20:57:39,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1663 transitions. [2020-10-12 20:57:39,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:57:39,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:39,044 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:39,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:57:39,044 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:39,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:39,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1356987105, now seen corresponding path program 1 times [2020-10-12 20:57:39,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:39,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412378918] [2020-10-12 20:57:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:39,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:39,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:39,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:42,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:44,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:44,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 20:57:44,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:57:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:57:44,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:57:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:57:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:57:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:44,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:44,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:44,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:44,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:44,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:44,277 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 20:57:44,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412378918] [2020-10-12 20:57:44,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:57:44,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:57:44,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106231993] [2020-10-12 20:57:44,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:57:44,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:44,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:57:44,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:57:44,291 INFO L87 Difference]: Start difference. First operand 1070 states and 1663 transitions. Second operand 9 states. [2020-10-12 20:57:46,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:46,109 INFO L93 Difference]: Finished difference Result 2554 states and 3980 transitions. [2020-10-12 20:57:46,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:57:46,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:57:46,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:46,118 INFO L225 Difference]: With dead ends: 2554 [2020-10-12 20:57:46,118 INFO L226 Difference]: Without dead ends: 2042 [2020-10-12 20:57:46,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:57:46,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2020-10-12 20:57:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1831. [2020-10-12 20:57:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1831 states. [2020-10-12 20:57:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2891 transitions. [2020-10-12 20:57:46,182 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2891 transitions. Word has length 96 [2020-10-12 20:57:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:46,182 INFO L479 AbstractCegarLoop]: Abstraction has 1831 states and 2891 transitions. [2020-10-12 20:57:46,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:57:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2891 transitions. [2020-10-12 20:57:46,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:57:46,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:46,187 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:46,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:57:46,188 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:46,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:46,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1042278060, now seen corresponding path program 1 times [2020-10-12 20:57:46,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:46,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374823026] [2020-10-12 20:57:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:46,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:46,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:48,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:48,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:57:48,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2184 [2020-10-12 20:57:48,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:57:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:57:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:48,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:48,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:48,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:48,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 20:57:48,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374823026] [2020-10-12 20:57:48,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:48,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:48,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132368628] [2020-10-12 20:57:48,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:48,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:48,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:48,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:48,457 INFO L87 Difference]: Start difference. First operand 1831 states and 2891 transitions. Second operand 5 states. [2020-10-12 20:57:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:49,099 INFO L93 Difference]: Finished difference Result 2976 states and 4657 transitions. [2020-10-12 20:57:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:49,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-12 20:57:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:49,107 INFO L225 Difference]: With dead ends: 2976 [2020-10-12 20:57:49,107 INFO L226 Difference]: Without dead ends: 1947 [2020-10-12 20:57:49,109 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 20:57:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2020-10-12 20:57:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1831. [2020-10-12 20:57:49,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1831 states. [2020-10-12 20:57:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2883 transitions. [2020-10-12 20:57:49,167 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2883 transitions. Word has length 101 [2020-10-12 20:57:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:49,167 INFO L479 AbstractCegarLoop]: Abstraction has 1831 states and 2883 transitions. [2020-10-12 20:57:49,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2883 transitions. [2020-10-12 20:57:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:57:49,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:49,172 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:49,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:57:49,173 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:49,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1391389531, now seen corresponding path program 1 times [2020-10-12 20:57:49,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:49,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787123833] [2020-10-12 20:57:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:49,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:49,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:49,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:52,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:57:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3024 [2020-10-12 20:57:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:57:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:57:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:52,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:52,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:52,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:52,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:52,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:52,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:52,295 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 20:57:52,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787123833] [2020-10-12 20:57:52,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:52,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:52,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012815934] [2020-10-12 20:57:52,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:52,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:52,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:52,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:52,297 INFO L87 Difference]: Start difference. First operand 1831 states and 2883 transitions. Second operand 5 states. [2020-10-12 20:57:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:53,201 INFO L93 Difference]: Finished difference Result 3489 states and 5469 transitions. [2020-10-12 20:57:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:53,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-12 20:57:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:53,212 INFO L225 Difference]: With dead ends: 3489 [2020-10-12 20:57:53,212 INFO L226 Difference]: Without dead ends: 2509 [2020-10-12 20:57:53,214 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 20:57:53,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2020-10-12 20:57:53,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 1897. [2020-10-12 20:57:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1897 states. [2020-10-12 20:57:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2981 transitions. [2020-10-12 20:57:53,271 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2981 transitions. Word has length 101 [2020-10-12 20:57:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:53,271 INFO L479 AbstractCegarLoop]: Abstraction has 1897 states and 2981 transitions. [2020-10-12 20:57:53,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:53,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2981 transitions. [2020-10-12 20:57:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:57:53,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:53,276 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:53,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:57:53,276 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:53,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:53,277 INFO L82 PathProgramCache]: Analyzing trace with hash -515370525, now seen corresponding path program 1 times [2020-10-12 20:57:53,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:53,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633074977] [2020-10-12 20:57:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:53,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:53,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:54,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:56,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:56,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:57:56,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3110 [2020-10-12 20:57:56,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:57:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:57:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:56,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:56,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:56,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:56,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:56,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:56,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:56,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:56,500 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 20:57:56,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633074977] [2020-10-12 20:57:56,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:56,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:56,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159251622] [2020-10-12 20:57:56,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:56,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:56,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:56,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:56,502 INFO L87 Difference]: Start difference. First operand 1897 states and 2981 transitions. Second operand 5 states. [2020-10-12 20:57:57,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:57,593 INFO L93 Difference]: Finished difference Result 3464 states and 5420 transitions. [2020-10-12 20:57:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:57,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-12 20:57:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:57,603 INFO L225 Difference]: With dead ends: 3464 [2020-10-12 20:57:57,603 INFO L226 Difference]: Without dead ends: 2451 [2020-10-12 20:57:57,605 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 20:57:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2020-10-12 20:57:57,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 1773. [2020-10-12 20:57:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1773 states. [2020-10-12 20:57:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2785 transitions. [2020-10-12 20:57:57,660 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2785 transitions. Word has length 101 [2020-10-12 20:57:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:57,660 INFO L479 AbstractCegarLoop]: Abstraction has 1773 states and 2785 transitions. [2020-10-12 20:57:57,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2785 transitions. [2020-10-12 20:57:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:57:57,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:57,665 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:57,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:57:57,666 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:57,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1843140022, now seen corresponding path program 1 times [2020-10-12 20:57:57,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:57,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851856392] [2020-10-12 20:57:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:57,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:59,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:02,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:02,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:58:02,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:58:02,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:58:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:58:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 20:58:02,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:02,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:02,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:02,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:02,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:02,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 20:58:02,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851856392] [2020-10-12 20:58:02,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:58:02,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:58:02,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253225508] [2020-10-12 20:58:02,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:58:02,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:02,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:58:02,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:58:02,932 INFO L87 Difference]: Start difference. First operand 1773 states and 2785 transitions. Second operand 9 states. [2020-10-12 20:58:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:04,508 INFO L93 Difference]: Finished difference Result 2830 states and 4406 transitions. [2020-10-12 20:58:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:58:04,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-12 20:58:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:04,521 INFO L225 Difference]: With dead ends: 2830 [2020-10-12 20:58:04,521 INFO L226 Difference]: Without dead ends: 2347 [2020-10-12 20:58:04,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:58:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-12 20:58:04,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 1028. [2020-10-12 20:58:04,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2020-10-12 20:58:04,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1584 transitions. [2020-10-12 20:58:04,568 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1584 transitions. Word has length 109 [2020-10-12 20:58:04,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:04,568 INFO L479 AbstractCegarLoop]: Abstraction has 1028 states and 1584 transitions. [2020-10-12 20:58:04,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:58:04,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1584 transitions. [2020-10-12 20:58:04,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:58:04,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:04,572 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:04,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:58:04,572 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:04,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:04,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1144448764, now seen corresponding path program 1 times [2020-10-12 20:58:04,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:04,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620753796] [2020-10-12 20:58:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:04,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:04,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:05,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:05,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:05,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:58:05,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1299 [2020-10-12 20:58:05,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:58:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:05,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:05,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:05,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:05,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:05,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:05,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:06,014 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 20:58:06,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620753796] [2020-10-12 20:58:06,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:06,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:06,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558466617] [2020-10-12 20:58:06,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:06,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:06,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:06,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:06,017 INFO L87 Difference]: Start difference. First operand 1028 states and 1584 transitions. Second operand 5 states. [2020-10-12 20:58:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:06,969 INFO L93 Difference]: Finished difference Result 2415 states and 3732 transitions. [2020-10-12 20:58:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:06,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:58:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:06,975 INFO L225 Difference]: With dead ends: 2415 [2020-10-12 20:58:06,975 INFO L226 Difference]: Without dead ends: 1424 [2020-10-12 20:58:06,977 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 20:58:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-12 20:58:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1126. [2020-10-12 20:58:07,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1126 states. [2020-10-12 20:58:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1742 transitions. [2020-10-12 20:58:07,014 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1742 transitions. Word has length 109 [2020-10-12 20:58:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:07,015 INFO L479 AbstractCegarLoop]: Abstraction has 1126 states and 1742 transitions. [2020-10-12 20:58:07,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1742 transitions. [2020-10-12 20:58:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:58:07,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:07,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:07,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:58:07,018 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:07,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:07,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1823721018, now seen corresponding path program 1 times [2020-10-12 20:58:07,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:07,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617764500] [2020-10-12 20:58:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:07,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:07,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:07,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:07,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:58:07,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-12 20:58:07,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:58:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:58:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:07,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:07,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:07,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:07,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:07,502 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 20:58:07,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617764500] [2020-10-12 20:58:07,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:07,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:07,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317132200] [2020-10-12 20:58:07,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:07,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:07,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:07,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:07,503 INFO L87 Difference]: Start difference. First operand 1126 states and 1742 transitions. Second operand 5 states. [2020-10-12 20:58:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:08,559 INFO L93 Difference]: Finished difference Result 2669 states and 4139 transitions. [2020-10-12 20:58:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:08,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:58:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:08,565 INFO L225 Difference]: With dead ends: 2669 [2020-10-12 20:58:08,565 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 20:58:08,568 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 20:58:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 20:58:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1280. [2020-10-12 20:58:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-10-12 20:58:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 2020 transitions. [2020-10-12 20:58:08,606 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 2020 transitions. Word has length 109 [2020-10-12 20:58:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:08,606 INFO L479 AbstractCegarLoop]: Abstraction has 1280 states and 2020 transitions. [2020-10-12 20:58:08,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 2020 transitions. [2020-10-12 20:58:08,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:58:08,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:08,608 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:08,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:58:08,609 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:08,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:08,609 INFO L82 PathProgramCache]: Analyzing trace with hash 460506152, now seen corresponding path program 1 times [2020-10-12 20:58:08,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:08,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334443426] [2020-10-12 20:58:08,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:08,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:08,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:09,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:58:09,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:09,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-12 20:58:09,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:58:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:58:09,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:09,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:09,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:09,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:09,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:09,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:09,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:09,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:09,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:09,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:09,070 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 20:58:09,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334443426] [2020-10-12 20:58:09,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:09,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:09,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530463867] [2020-10-12 20:58:09,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:09,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:09,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:09,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:09,072 INFO L87 Difference]: Start difference. First operand 1280 states and 2020 transitions. Second operand 5 states. [2020-10-12 20:58:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:10,072 INFO L93 Difference]: Finished difference Result 2801 states and 4380 transitions. [2020-10-12 20:58:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:10,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:58:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:10,075 INFO L225 Difference]: With dead ends: 2801 [2020-10-12 20:58:10,076 INFO L226 Difference]: Without dead ends: 1558 [2020-10-12 20:58:10,078 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 20:58:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-10-12 20:58:10,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1184. [2020-10-12 20:58:10,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1184 states. [2020-10-12 20:58:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1836 transitions. [2020-10-12 20:58:10,104 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1836 transitions. Word has length 110 [2020-10-12 20:58:10,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:10,104 INFO L479 AbstractCegarLoop]: Abstraction has 1184 states and 1836 transitions. [2020-10-12 20:58:10,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:10,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1836 transitions. [2020-10-12 20:58:10,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:58:10,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:10,106 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 20:58:10,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:58:10,106 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:10,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:10,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1938908942, now seen corresponding path program 1 times [2020-10-12 20:58:10,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:10,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294977970] [2020-10-12 20:58:10,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:11,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:11,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:58:11,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:11,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-10-12 20:58:11,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:58:11,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:11,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:11,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:11,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:11,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:11,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:11,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:11,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:11,502 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 20:58:11,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294977970] [2020-10-12 20:58:11,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:11,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:11,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128320353] [2020-10-12 20:58:11,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:11,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:11,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:11,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:11,504 INFO L87 Difference]: Start difference. First operand 1184 states and 1836 transitions. Second operand 5 states. [2020-10-12 20:58:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:12,463 INFO L93 Difference]: Finished difference Result 2629 states and 4074 transitions. [2020-10-12 20:58:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:12,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:58:12,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:12,466 INFO L225 Difference]: With dead ends: 2629 [2020-10-12 20:58:12,466 INFO L226 Difference]: Without dead ends: 1482 [2020-10-12 20:58:12,468 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 20:58:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-10-12 20:58:12,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1200. [2020-10-12 20:58:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2020-10-12 20:58:12,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1864 transitions. [2020-10-12 20:58:12,495 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1864 transitions. Word has length 112 [2020-10-12 20:58:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:12,495 INFO L479 AbstractCegarLoop]: Abstraction has 1200 states and 1864 transitions. [2020-10-12 20:58:12,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1864 transitions. [2020-10-12 20:58:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:58:12,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:12,497 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 20:58:12,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:58:12,498 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:12,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:12,498 INFO L82 PathProgramCache]: Analyzing trace with hash 669878516, now seen corresponding path program 1 times [2020-10-12 20:58:12,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:12,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020292336] [2020-10-12 20:58:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:12,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:12,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:12,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:13,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:15,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:15,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:58:15,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3183 [2020-10-12 20:58:15,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:58:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:15,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:15,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:15,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:15,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:15,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:15,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:15,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 20:58:15,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020292336] [2020-10-12 20:58:15,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:15,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:15,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299282092] [2020-10-12 20:58:15,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:15,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:15,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:15,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:15,773 INFO L87 Difference]: Start difference. First operand 1200 states and 1864 transitions. Second operand 5 states. [2020-10-12 20:58:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:16,554 INFO L93 Difference]: Finished difference Result 2553 states and 3966 transitions. [2020-10-12 20:58:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:16,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:58:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:16,557 INFO L225 Difference]: With dead ends: 2553 [2020-10-12 20:58:16,557 INFO L226 Difference]: Without dead ends: 1390 [2020-10-12 20:58:16,559 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 20:58:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2020-10-12 20:58:16,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1294. [2020-10-12 20:58:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1294 states. [2020-10-12 20:58:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 2018 transitions. [2020-10-12 20:58:16,603 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 2018 transitions. Word has length 112 [2020-10-12 20:58:16,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:16,603 INFO L479 AbstractCegarLoop]: Abstraction has 1294 states and 2018 transitions. [2020-10-12 20:58:16,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:16,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 2018 transitions. [2020-10-12 20:58:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:58:16,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:16,606 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:16,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:58:16,606 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:16,607 INFO L82 PathProgramCache]: Analyzing trace with hash -783189827, now seen corresponding path program 1 times [2020-10-12 20:58:16,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:16,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487753337] [2020-10-12 20:58:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:16,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:16,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:17,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:17,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:58:17,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1329 [2020-10-12 20:58:17,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:58:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:18,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:18,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:18,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:18,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:18,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:18,042 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 20:58:18,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487753337] [2020-10-12 20:58:18,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:18,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:18,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411354951] [2020-10-12 20:58:18,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:18,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:18,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:18,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:18,044 INFO L87 Difference]: Start difference. First operand 1294 states and 2018 transitions. Second operand 5 states. [2020-10-12 20:58:18,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:18,955 INFO L93 Difference]: Finished difference Result 2801 states and 4354 transitions. [2020-10-12 20:58:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:18,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:58:18,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:18,960 INFO L225 Difference]: With dead ends: 2801 [2020-10-12 20:58:18,960 INFO L226 Difference]: Without dead ends: 1544 [2020-10-12 20:58:18,963 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 20:58:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2020-10-12 20:58:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1298. [2020-10-12 20:58:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1298 states. [2020-10-12 20:58:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 2022 transitions. [2020-10-12 20:58:19,009 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 2022 transitions. Word has length 113 [2020-10-12 20:58:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:19,009 INFO L479 AbstractCegarLoop]: Abstraction has 1298 states and 2022 transitions. [2020-10-12 20:58:19,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 2022 transitions. [2020-10-12 20:58:19,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:58:19,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:19,013 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:19,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:58:19,014 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:19,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:19,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1292503033, now seen corresponding path program 1 times [2020-10-12 20:58:19,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:19,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373576549] [2020-10-12 20:58:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:19,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:19,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:19,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:19,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:24,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:24,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:58:24,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:58:24,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:58:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:58:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 20:58:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:24,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:24,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:24,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:24,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:24,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:24,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:24,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:24,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:24,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:24,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:24,256 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 20:58:24,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373576549] [2020-10-12 20:58:24,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:58:24,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:58:24,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861248037] [2020-10-12 20:58:24,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:58:24,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:24,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:58:24,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:58:24,258 INFO L87 Difference]: Start difference. First operand 1298 states and 2022 transitions. Second operand 9 states. [2020-10-12 20:58:26,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:26,728 INFO L93 Difference]: Finished difference Result 3771 states and 5898 transitions. [2020-10-12 20:58:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:58:26,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 115 [2020-10-12 20:58:26,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:26,735 INFO L225 Difference]: With dead ends: 3771 [2020-10-12 20:58:26,735 INFO L226 Difference]: Without dead ends: 2510 [2020-10-12 20:58:26,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:58:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2020-10-12 20:58:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 1854. [2020-10-12 20:58:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1854 states. [2020-10-12 20:58:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2916 transitions. [2020-10-12 20:58:26,820 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2916 transitions. Word has length 115 [2020-10-12 20:58:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:26,820 INFO L479 AbstractCegarLoop]: Abstraction has 1854 states and 2916 transitions. [2020-10-12 20:58:26,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:58:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2916 transitions. [2020-10-12 20:58:26,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:58:26,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:26,824 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:26,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:58:26,824 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:26,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:26,824 INFO L82 PathProgramCache]: Analyzing trace with hash 953076421, now seen corresponding path program 1 times [2020-10-12 20:58:26,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:26,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283594082] [2020-10-12 20:58:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:26,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:26,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:28,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:58:28,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1662 [2020-10-12 20:58:28,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:58:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:28,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:28,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:28,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:28,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:28,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:28,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:28,597 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 20:58:28,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283594082] [2020-10-12 20:58:28,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:28,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:28,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710034461] [2020-10-12 20:58:28,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:28,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:28,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:28,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:28,599 INFO L87 Difference]: Start difference. First operand 1854 states and 2916 transitions. Second operand 5 states. [2020-10-12 20:58:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:29,544 INFO L93 Difference]: Finished difference Result 4015 states and 6290 transitions. [2020-10-12 20:58:29,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:29,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-12 20:58:29,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:29,549 INFO L225 Difference]: With dead ends: 4015 [2020-10-12 20:58:29,549 INFO L226 Difference]: Without dead ends: 2202 [2020-10-12 20:58:29,552 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 20:58:29,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2020-10-12 20:58:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1854. [2020-10-12 20:58:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1854 states. [2020-10-12 20:58:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2910 transitions. [2020-10-12 20:58:29,620 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2910 transitions. Word has length 115 [2020-10-12 20:58:29,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:29,621 INFO L479 AbstractCegarLoop]: Abstraction has 1854 states and 2910 transitions. [2020-10-12 20:58:29,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2910 transitions. [2020-10-12 20:58:29,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:58:29,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:29,624 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:29,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:58:29,624 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:29,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:29,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1029310534, now seen corresponding path program 1 times [2020-10-12 20:58:29,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:29,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118274910] [2020-10-12 20:58:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:29,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:31,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:31,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:58:31,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1557 [2020-10-12 20:58:31,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:58:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:31,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:31,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:31,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:31,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:31,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:31,276 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 20:58:31,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118274910] [2020-10-12 20:58:31,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:31,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:31,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990816677] [2020-10-12 20:58:31,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:31,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:31,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:31,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:31,278 INFO L87 Difference]: Start difference. First operand 1854 states and 2910 transitions. Second operand 5 states. [2020-10-12 20:58:32,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:32,197 INFO L93 Difference]: Finished difference Result 4003 states and 6260 transitions. [2020-10-12 20:58:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:32,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:58:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:32,200 INFO L225 Difference]: With dead ends: 4003 [2020-10-12 20:58:32,201 INFO L226 Difference]: Without dead ends: 2190 [2020-10-12 20:58:32,203 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 20:58:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2020-10-12 20:58:32,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1854. [2020-10-12 20:58:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1854 states. [2020-10-12 20:58:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2904 transitions. [2020-10-12 20:58:32,271 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2904 transitions. Word has length 116 [2020-10-12 20:58:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:32,272 INFO L479 AbstractCegarLoop]: Abstraction has 1854 states and 2904 transitions. [2020-10-12 20:58:32,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2904 transitions. [2020-10-12 20:58:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:58:32,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:32,275 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:32,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:58:32,275 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:32,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:32,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1591878452, now seen corresponding path program 1 times [2020-10-12 20:58:32,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:32,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471856607] [2020-10-12 20:58:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:32,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:32,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:32,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:32,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:58:32,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:58:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-12 20:58:32,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:58:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:32,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:32,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:32,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:32,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:32,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:32,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:32,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471856607] [2020-10-12 20:58:32,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:32,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:32,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373940575] [2020-10-12 20:58:32,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:32,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:32,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:32,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:32,684 INFO L87 Difference]: Start difference. First operand 1854 states and 2904 transitions. Second operand 5 states. [2020-10-12 20:58:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:33,641 INFO L93 Difference]: Finished difference Result 3985 states and 6224 transitions. [2020-10-12 20:58:33,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:33,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:58:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:33,645 INFO L225 Difference]: With dead ends: 3985 [2020-10-12 20:58:33,645 INFO L226 Difference]: Without dead ends: 2172 [2020-10-12 20:58:33,648 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 20:58:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2020-10-12 20:58:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1872. [2020-10-12 20:58:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1872 states. [2020-10-12 20:58:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2934 transitions. [2020-10-12 20:58:33,706 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2934 transitions. Word has length 116 [2020-10-12 20:58:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:33,706 INFO L479 AbstractCegarLoop]: Abstraction has 1872 states and 2934 transitions. [2020-10-12 20:58:33,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2934 transitions. [2020-10-12 20:58:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:58:33,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:33,709 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:33,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:58:33,709 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:33,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:33,710 INFO L82 PathProgramCache]: Analyzing trace with hash -208379798, now seen corresponding path program 1 times [2020-10-12 20:58:33,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:33,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403374582] [2020-10-12 20:58:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:38,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:38,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:58:38,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:58:38,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 20:58:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:58:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:38,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:38,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:38,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:38,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:38,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:38,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 20:58:38,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403374582] [2020-10-12 20:58:38,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:38,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:38,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170725266] [2020-10-12 20:58:38,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:38,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:38,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:38,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:38,824 INFO L87 Difference]: Start difference. First operand 1872 states and 2934 transitions. Second operand 5 states. [2020-10-12 20:58:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:39,878 INFO L93 Difference]: Finished difference Result 4183 states and 6566 transitions. [2020-10-12 20:58:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:39,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:58:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:39,883 INFO L225 Difference]: With dead ends: 4183 [2020-10-12 20:58:39,883 INFO L226 Difference]: Without dead ends: 2352 [2020-10-12 20:58:39,887 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 20:58:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2020-10-12 20:58:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1950. [2020-10-12 20:58:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-10-12 20:58:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 3078 transitions. [2020-10-12 20:58:39,939 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 3078 transitions. Word has length 119 [2020-10-12 20:58:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:39,940 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 3078 transitions. [2020-10-12 20:58:39,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 3078 transitions. [2020-10-12 20:58:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:58:39,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:39,944 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:39,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:58:39,944 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:39,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:39,944 INFO L82 PathProgramCache]: Analyzing trace with hash 847956323, now seen corresponding path program 1 times [2020-10-12 20:58:39,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:39,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802605902] [2020-10-12 20:58:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:39,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:41,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:41,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:58:41,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:41,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1381 [2020-10-12 20:58:41,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:58:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:41,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:41,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:41,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:41,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:41,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802605902] [2020-10-12 20:58:41,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:41,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:41,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126395302] [2020-10-12 20:58:41,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:41,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:41,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:41,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:41,418 INFO L87 Difference]: Start difference. First operand 1950 states and 3078 transitions. Second operand 5 states. [2020-10-12 20:58:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:42,361 INFO L93 Difference]: Finished difference Result 4159 states and 6536 transitions. [2020-10-12 20:58:42,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:42,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:58:42,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:42,364 INFO L225 Difference]: With dead ends: 4159 [2020-10-12 20:58:42,364 INFO L226 Difference]: Without dead ends: 2250 [2020-10-12 20:58:42,367 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 20:58:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2020-10-12 20:58:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1956. [2020-10-12 20:58:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1956 states. [2020-10-12 20:58:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 3084 transitions. [2020-10-12 20:58:42,414 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 3084 transitions. Word has length 119 [2020-10-12 20:58:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:42,414 INFO L479 AbstractCegarLoop]: Abstraction has 1956 states and 3084 transitions. [2020-10-12 20:58:42,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 3084 transitions. [2020-10-12 20:58:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:58:42,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:42,417 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:42,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:58:42,417 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:42,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:42,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1323606085, now seen corresponding path program 1 times [2020-10-12 20:58:42,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:42,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299784101] [2020-10-12 20:58:42,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:42,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:42,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:42,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:47,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:47,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:58:47,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:47,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:58:47,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-12 20:58:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:58:47,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:47,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:47,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:47,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:47,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:47,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 20:58:47,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299784101] [2020-10-12 20:58:47,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:47,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:47,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558485167] [2020-10-12 20:58:47,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:47,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:47,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:47,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:47,515 INFO L87 Difference]: Start difference. First operand 1956 states and 3084 transitions. Second operand 5 states. [2020-10-12 20:58:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:48,493 INFO L93 Difference]: Finished difference Result 4284 states and 6755 transitions. [2020-10-12 20:58:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:48,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:58:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:48,497 INFO L225 Difference]: With dead ends: 4284 [2020-10-12 20:58:48,497 INFO L226 Difference]: Without dead ends: 2369 [2020-10-12 20:58:48,499 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 20:58:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2020-10-12 20:58:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2133. [2020-10-12 20:58:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2020-10-12 20:58:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 3393 transitions. [2020-10-12 20:58:48,551 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 3393 transitions. Word has length 120 [2020-10-12 20:58:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:48,551 INFO L479 AbstractCegarLoop]: Abstraction has 2133 states and 3393 transitions. [2020-10-12 20:58:48,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 3393 transitions. [2020-10-12 20:58:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:58:48,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:48,554 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:48,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:58:48,555 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:48,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:48,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1328024798, now seen corresponding path program 1 times [2020-10-12 20:58:48,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:48,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799518667] [2020-10-12 20:58:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:49,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:49,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:58:49,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-12 20:58:49,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:58:49,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:49,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:49,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:49,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:49,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:49,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:49,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:49,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:49,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:49,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799518667] [2020-10-12 20:58:49,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:49,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:49,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411775779] [2020-10-12 20:58:49,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:49,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:49,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:49,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:49,693 INFO L87 Difference]: Start difference. First operand 2133 states and 3393 transitions. Second operand 5 states. [2020-10-12 20:58:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:50,630 INFO L93 Difference]: Finished difference Result 4519 states and 7154 transitions. [2020-10-12 20:58:50,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:50,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:58:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:50,633 INFO L225 Difference]: With dead ends: 4519 [2020-10-12 20:58:50,633 INFO L226 Difference]: Without dead ends: 2427 [2020-10-12 20:58:50,636 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 20:58:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2020-10-12 20:58:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2145. [2020-10-12 20:58:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2020-10-12 20:58:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3411 transitions. [2020-10-12 20:58:50,686 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3411 transitions. Word has length 120 [2020-10-12 20:58:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:50,686 INFO L479 AbstractCegarLoop]: Abstraction has 2145 states and 3411 transitions. [2020-10-12 20:58:50,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:50,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3411 transitions. [2020-10-12 20:58:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:58:50,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:50,689 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:50,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:58:50,689 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:50,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:50,690 INFO L82 PathProgramCache]: Analyzing trace with hash -909170755, now seen corresponding path program 1 times [2020-10-12 20:58:50,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:50,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846742421] [2020-10-12 20:58:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:50,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:50,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:51,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:51,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:58:51,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:51,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-10-12 20:58:51,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:51,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:51,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:51,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:58:51,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:52,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:52,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:52,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:52,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:52,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:52,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846742421] [2020-10-12 20:58:52,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:52,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:52,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764833358] [2020-10-12 20:58:52,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:52,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:52,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:52,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:52,058 INFO L87 Difference]: Start difference. First operand 2145 states and 3411 transitions. Second operand 5 states. [2020-10-12 20:58:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:52,975 INFO L93 Difference]: Finished difference Result 4495 states and 7112 transitions. [2020-10-12 20:58:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:52,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:58:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:52,979 INFO L225 Difference]: With dead ends: 4495 [2020-10-12 20:58:52,980 INFO L226 Difference]: Without dead ends: 2391 [2020-10-12 20:58:52,982 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 20:58:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2020-10-12 20:58:53,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2145. [2020-10-12 20:58:53,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2020-10-12 20:58:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3405 transitions. [2020-10-12 20:58:53,038 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3405 transitions. Word has length 120 [2020-10-12 20:58:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:53,038 INFO L479 AbstractCegarLoop]: Abstraction has 2145 states and 3405 transitions. [2020-10-12 20:58:53,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3405 transitions. [2020-10-12 20:58:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:58:53,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:53,041 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:53,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:58:53,041 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:53,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1587506328, now seen corresponding path program 1 times [2020-10-12 20:58:53,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:53,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046664659] [2020-10-12 20:58:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:53,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:53,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:53,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:54,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:54,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:58:54,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-10-12 20:58:54,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:58:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:54,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:54,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:54,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:54,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:54,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:54,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:54,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046664659] [2020-10-12 20:58:54,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:54,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:54,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426469337] [2020-10-12 20:58:54,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:54,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:54,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:54,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:54,147 INFO L87 Difference]: Start difference. First operand 2145 states and 3405 transitions. Second operand 5 states. [2020-10-12 20:58:55,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:55,061 INFO L93 Difference]: Finished difference Result 4477 states and 7076 transitions. [2020-10-12 20:58:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:55,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:58:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:55,065 INFO L225 Difference]: With dead ends: 4477 [2020-10-12 20:58:55,065 INFO L226 Difference]: Without dead ends: 2373 [2020-10-12 20:58:55,068 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 20:58:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2020-10-12 20:58:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2151. [2020-10-12 20:58:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2151 states. [2020-10-12 20:58:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3411 transitions. [2020-10-12 20:58:55,121 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3411 transitions. Word has length 121 [2020-10-12 20:58:55,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:55,122 INFO L479 AbstractCegarLoop]: Abstraction has 2151 states and 3411 transitions. [2020-10-12 20:58:55,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3411 transitions. [2020-10-12 20:58:55,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:58:55,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:55,126 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:55,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:58:55,126 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:55,127 INFO L82 PathProgramCache]: Analyzing trace with hash 408771983, now seen corresponding path program 1 times [2020-10-12 20:58:55,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:55,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273590539] [2020-10-12 20:58:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:00,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:00,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:59:00,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:59:00,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:59:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 20:59:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:00,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:00,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:00,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 20:59:00,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273590539] [2020-10-12 20:59:00,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:00,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:59:00,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041219093] [2020-10-12 20:59:00,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:59:00,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:00,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:59:00,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:59:00,654 INFO L87 Difference]: Start difference. First operand 2151 states and 3411 transitions. Second operand 9 states. [2020-10-12 20:59:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:03,674 INFO L93 Difference]: Finished difference Result 6043 states and 9583 transitions. [2020-10-12 20:59:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:59:03,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 122 [2020-10-12 20:59:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:03,681 INFO L225 Difference]: With dead ends: 6043 [2020-10-12 20:59:03,682 INFO L226 Difference]: Without dead ends: 4584 [2020-10-12 20:59:03,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:59:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4584 states. [2020-10-12 20:59:03,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4584 to 1500. [2020-10-12 20:59:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1500 states. [2020-10-12 20:59:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2356 transitions. [2020-10-12 20:59:03,738 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2356 transitions. Word has length 122 [2020-10-12 20:59:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:03,739 INFO L479 AbstractCegarLoop]: Abstraction has 1500 states and 2356 transitions. [2020-10-12 20:59:03,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:59:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2356 transitions. [2020-10-12 20:59:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:59:03,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:03,742 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:03,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:59:03,742 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:03,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:03,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1640615859, now seen corresponding path program 1 times [2020-10-12 20:59:03,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:03,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155098223] [2020-10-12 20:59:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:03,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:07,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:08,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:08,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:59:08,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:08,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:59:08,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:08,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:08,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:59:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:59:08,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:08,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:08,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:08,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:08,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:08,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:08,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:08,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 20:59:08,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155098223] [2020-10-12 20:59:08,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:08,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:08,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383561544] [2020-10-12 20:59:08,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:08,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:08,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:08,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:08,854 INFO L87 Difference]: Start difference. First operand 1500 states and 2356 transitions. Second operand 5 states. [2020-10-12 20:59:09,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:09,949 INFO L93 Difference]: Finished difference Result 3417 states and 5367 transitions. [2020-10-12 20:59:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:09,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:59:09,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:09,952 INFO L225 Difference]: With dead ends: 3417 [2020-10-12 20:59:09,952 INFO L226 Difference]: Without dead ends: 1954 [2020-10-12 20:59:09,954 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 20:59:09,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-12 20:59:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1654. [2020-10-12 20:59:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2020-10-12 20:59:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2634 transitions. [2020-10-12 20:59:09,995 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2634 transitions. Word has length 122 [2020-10-12 20:59:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:09,995 INFO L479 AbstractCegarLoop]: Abstraction has 1654 states and 2634 transitions. [2020-10-12 20:59:09,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2634 transitions. [2020-10-12 20:59:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:59:09,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:09,997 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:09,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:59:09,997 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:09,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1399194070, now seen corresponding path program 1 times [2020-10-12 20:59:09,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:09,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345885085] [2020-10-12 20:59:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:10,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:10,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:59:10,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:59:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-12 20:59:10,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:59:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:10,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:10,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:10,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:10,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:10,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:10,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345885085] [2020-10-12 20:59:10,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:10,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:10,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831871774] [2020-10-12 20:59:10,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:10,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:10,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:10,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:10,458 INFO L87 Difference]: Start difference. First operand 1654 states and 2634 transitions. Second operand 5 states. [2020-10-12 20:59:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:11,390 INFO L93 Difference]: Finished difference Result 3433 states and 5442 transitions. [2020-10-12 20:59:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:11,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:59:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:11,393 INFO L225 Difference]: With dead ends: 3433 [2020-10-12 20:59:11,394 INFO L226 Difference]: Without dead ends: 1816 [2020-10-12 20:59:11,396 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 20:59:11,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2020-10-12 20:59:11,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1658. [2020-10-12 20:59:11,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-12 20:59:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2638 transitions. [2020-10-12 20:59:11,438 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2638 transitions. Word has length 122 [2020-10-12 20:59:11,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:11,439 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2638 transitions. [2020-10-12 20:59:11,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2638 transitions. [2020-10-12 20:59:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:59:11,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:11,441 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:11,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:59:11,441 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:11,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:11,442 INFO L82 PathProgramCache]: Analyzing trace with hash 440245365, now seen corresponding path program 1 times [2020-10-12 20:59:11,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:11,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100909233] [2020-10-12 20:59:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:11,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:11,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:14,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:14,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:16,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:16,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:59:16,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:16,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:59:16,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:16,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:16,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 20:59:16,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:59:16,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:16,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:16,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:16,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:16,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:16,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:16,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:16,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 20:59:16,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100909233] [2020-10-12 20:59:16,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:16,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:16,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544181127] [2020-10-12 20:59:16,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:16,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:16,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:16,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:16,542 INFO L87 Difference]: Start difference. First operand 1658 states and 2638 transitions. Second operand 5 states. [2020-10-12 20:59:17,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:17,511 INFO L93 Difference]: Finished difference Result 3561 states and 5646 transitions. [2020-10-12 20:59:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:17,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:59:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:17,513 INFO L225 Difference]: With dead ends: 3561 [2020-10-12 20:59:17,513 INFO L226 Difference]: Without dead ends: 1940 [2020-10-12 20:59:17,516 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 20:59:17,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-10-12 20:59:17,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1658. [2020-10-12 20:59:17,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-12 20:59:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2634 transitions. [2020-10-12 20:59:17,556 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2634 transitions. Word has length 123 [2020-10-12 20:59:17,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:17,557 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2634 transitions. [2020-10-12 20:59:17,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2634 transitions. [2020-10-12 20:59:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:59:17,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:17,559 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:17,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 20:59:17,559 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:17,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1503170900, now seen corresponding path program 1 times [2020-10-12 20:59:17,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:17,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468702854] [2020-10-12 20:59:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:17,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:17,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:20,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:21,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:22,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:22,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:59:22,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 20:59:22,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:59:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 20:59:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:22,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:22,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:22,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:22,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:22,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:22,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:22,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:22,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 15 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:59:22,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468702854] [2020-10-12 20:59:22,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:22,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:59:22,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439638018] [2020-10-12 20:59:22,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:59:22,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:22,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:59:22,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:59:22,805 INFO L87 Difference]: Start difference. First operand 1658 states and 2634 transitions. Second operand 10 states. [2020-10-12 20:59:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:25,434 INFO L93 Difference]: Finished difference Result 4115 states and 6543 transitions. [2020-10-12 20:59:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:59:25,435 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2020-10-12 20:59:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:25,439 INFO L225 Difference]: With dead ends: 4115 [2020-10-12 20:59:25,439 INFO L226 Difference]: Without dead ends: 2494 [2020-10-12 20:59:25,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:59:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2020-10-12 20:59:25,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2348. [2020-10-12 20:59:25,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2020-10-12 20:59:25,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3774 transitions. [2020-10-12 20:59:25,508 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3774 transitions. Word has length 123 [2020-10-12 20:59:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:25,508 INFO L479 AbstractCegarLoop]: Abstraction has 2348 states and 3774 transitions. [2020-10-12 20:59:25,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:59:25,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3774 transitions. [2020-10-12 20:59:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:59:25,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:25,511 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:25,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 20:59:25,512 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:25,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:25,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1019009104, now seen corresponding path program 1 times [2020-10-12 20:59:25,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:25,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136334469] [2020-10-12 20:59:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:25,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:25,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:25,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:25,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:59:25,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:59:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-12 20:59:25,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:59:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:25,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:25,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:25,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:25,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:25,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:25,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136334469] [2020-10-12 20:59:25,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:25,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:25,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561333407] [2020-10-12 20:59:25,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:25,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:25,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:25,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:25,975 INFO L87 Difference]: Start difference. First operand 2348 states and 3774 transitions. Second operand 5 states. [2020-10-12 20:59:26,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:26,926 INFO L93 Difference]: Finished difference Result 4831 states and 7736 transitions. [2020-10-12 20:59:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:26,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:59:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:26,929 INFO L225 Difference]: With dead ends: 4831 [2020-10-12 20:59:26,930 INFO L226 Difference]: Without dead ends: 2520 [2020-10-12 20:59:26,933 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 20:59:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2020-10-12 20:59:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2328. [2020-10-12 20:59:26,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2328 states. [2020-10-12 20:59:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 3750 transitions. [2020-10-12 20:59:26,996 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 3750 transitions. Word has length 123 [2020-10-12 20:59:26,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:26,996 INFO L479 AbstractCegarLoop]: Abstraction has 2328 states and 3750 transitions. [2020-10-12 20:59:26,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 3750 transitions. [2020-10-12 20:59:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:59:26,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:26,999 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:26,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 20:59:27,000 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:27,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1825391701, now seen corresponding path program 1 times [2020-10-12 20:59:27,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:27,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268249159] [2020-10-12 20:59:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:27,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:27,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:28,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:29,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:59:29,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2796 [2020-10-12 20:59:29,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:59:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:59:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:59:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:29,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:29,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:29,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:29,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:29,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:29,900 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 20:59:29,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268249159] [2020-10-12 20:59:29,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:29,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:29,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75481157] [2020-10-12 20:59:29,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:29,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:29,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:29,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:29,901 INFO L87 Difference]: Start difference. First operand 2328 states and 3750 transitions. Second operand 5 states. [2020-10-12 20:59:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:31,119 INFO L93 Difference]: Finished difference Result 5033 states and 8066 transitions. [2020-10-12 20:59:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:31,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:59:31,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:31,123 INFO L225 Difference]: With dead ends: 5033 [2020-10-12 20:59:31,123 INFO L226 Difference]: Without dead ends: 2702 [2020-10-12 20:59:31,126 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 20:59:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2020-10-12 20:59:31,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2328. [2020-10-12 20:59:31,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2328 states. [2020-10-12 20:59:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 3744 transitions. [2020-10-12 20:59:31,199 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 3744 transitions. Word has length 123 [2020-10-12 20:59:31,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:31,199 INFO L479 AbstractCegarLoop]: Abstraction has 2328 states and 3744 transitions. [2020-10-12 20:59:31,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:31,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 3744 transitions. [2020-10-12 20:59:31,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:59:31,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:31,203 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:31,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 20:59:31,203 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:31,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:31,204 INFO L82 PathProgramCache]: Analyzing trace with hash 753591856, now seen corresponding path program 1 times [2020-10-12 20:59:31,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:31,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234145646] [2020-10-12 20:59:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:31,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:34,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:36,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:36,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:59:36,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:36,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:59:36,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 20:59:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:59:36,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:36,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:36,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:36,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:36,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:36,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:36,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:36,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 20:59:36,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234145646] [2020-10-12 20:59:36,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:36,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:36,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021009105] [2020-10-12 20:59:36,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:36,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:36,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:36,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:36,316 INFO L87 Difference]: Start difference. First operand 2328 states and 3744 transitions. Second operand 5 states. [2020-10-12 20:59:37,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:37,439 INFO L93 Difference]: Finished difference Result 4971 states and 7938 transitions. [2020-10-12 20:59:37,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:37,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 20:59:37,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:37,443 INFO L225 Difference]: With dead ends: 4971 [2020-10-12 20:59:37,443 INFO L226 Difference]: Without dead ends: 2680 [2020-10-12 20:59:37,446 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 20:59:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2020-10-12 20:59:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2184. [2020-10-12 20:59:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2020-10-12 20:59:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3468 transitions. [2020-10-12 20:59:37,509 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3468 transitions. Word has length 124 [2020-10-12 20:59:37,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:37,510 INFO L479 AbstractCegarLoop]: Abstraction has 2184 states and 3468 transitions. [2020-10-12 20:59:37,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:37,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3468 transitions. [2020-10-12 20:59:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:59:37,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:37,513 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:37,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 20:59:37,513 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1289070634, now seen corresponding path program 1 times [2020-10-12 20:59:37,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:37,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769772825] [2020-10-12 20:59:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:37,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:37,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:37,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:42,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:42,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 20:59:42,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:59:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5219 [2020-10-12 20:59:42,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:59:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 20:59:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:42,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:42,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:42,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:42,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:42,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:42,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:42,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:42,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 20:59:42,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769772825] [2020-10-12 20:59:42,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:42,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:59:42,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998922736] [2020-10-12 20:59:42,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:59:42,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:42,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:59:42,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:59:42,948 INFO L87 Difference]: Start difference. First operand 2184 states and 3468 transitions. Second operand 9 states. [2020-10-12 20:59:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:45,059 INFO L93 Difference]: Finished difference Result 4753 states and 7525 transitions. [2020-10-12 20:59:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:59:45,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 126 [2020-10-12 20:59:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:45,064 INFO L225 Difference]: With dead ends: 4753 [2020-10-12 20:59:45,064 INFO L226 Difference]: Without dead ends: 2606 [2020-10-12 20:59:45,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:59:45,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2020-10-12 20:59:45,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2292. [2020-10-12 20:59:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2020-10-12 20:59:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3652 transitions. [2020-10-12 20:59:45,129 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3652 transitions. Word has length 126 [2020-10-12 20:59:45,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:45,130 INFO L479 AbstractCegarLoop]: Abstraction has 2292 states and 3652 transitions. [2020-10-12 20:59:45,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:59:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3652 transitions. [2020-10-12 20:59:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 20:59:45,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:45,133 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:45,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 20:59:45,133 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:45,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:45,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1964830808, now seen corresponding path program 1 times [2020-10-12 20:59:45,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:45,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31850046] [2020-10-12 20:59:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:45,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:45,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 20:59:45,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:59:45,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-12 20:59:45,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:45,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:59:45,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:59:45,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:45,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:45,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:45,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:45,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:45,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:45,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:45,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:45,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:45,506 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 20:59:45,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31850046] [2020-10-12 20:59:45,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:45,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:45,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596733811] [2020-10-12 20:59:45,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:45,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:45,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:45,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:45,508 INFO L87 Difference]: Start difference. First operand 2292 states and 3652 transitions. Second operand 5 states. [2020-10-12 20:59:46,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:46,742 INFO L93 Difference]: Finished difference Result 3279 states and 5196 transitions. [2020-10-12 20:59:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:46,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 20:59:46,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:46,745 INFO L225 Difference]: With dead ends: 3279 [2020-10-12 20:59:46,745 INFO L226 Difference]: Without dead ends: 2521 [2020-10-12 20:59:46,747 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 20:59:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2020-10-12 20:59:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2369. [2020-10-12 20:59:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2369 states. [2020-10-12 20:59:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 3791 transitions. [2020-10-12 20:59:46,813 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 3791 transitions. Word has length 128 [2020-10-12 20:59:46,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:46,813 INFO L479 AbstractCegarLoop]: Abstraction has 2369 states and 3791 transitions. [2020-10-12 20:59:46,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 3791 transitions. [2020-10-12 20:59:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:59:46,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:46,816 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:46,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 20:59:46,816 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:46,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:46,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1020483462, now seen corresponding path program 1 times [2020-10-12 20:59:46,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:46,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418636809] [2020-10-12 20:59:46,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:46,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:47,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:47,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 20:59:47,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:59:47,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 20:59:47,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:47,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:47,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:59:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:59:47,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:47,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:47,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:47,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:47,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:47,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:47,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:47,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:47,144 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 20:59:47,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418636809] [2020-10-12 20:59:47,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:47,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:47,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36215383] [2020-10-12 20:59:47,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:47,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:47,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:47,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:47,145 INFO L87 Difference]: Start difference. First operand 2369 states and 3791 transitions. Second operand 5 states. [2020-10-12 20:59:48,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:48,264 INFO L93 Difference]: Finished difference Result 3344 states and 5316 transitions. [2020-10-12 20:59:48,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:48,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-12 20:59:48,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:48,268 INFO L225 Difference]: With dead ends: 3344 [2020-10-12 20:59:48,268 INFO L226 Difference]: Without dead ends: 2509 [2020-10-12 20:59:48,269 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 20:59:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2020-10-12 20:59:48,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2292. [2020-10-12 20:59:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2020-10-12 20:59:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3652 transitions. [2020-10-12 20:59:48,334 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3652 transitions. Word has length 129 [2020-10-12 20:59:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:48,334 INFO L479 AbstractCegarLoop]: Abstraction has 2292 states and 3652 transitions. [2020-10-12 20:59:48,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3652 transitions. [2020-10-12 20:59:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 20:59:48,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:48,337 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:48,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 20:59:48,338 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:48,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:48,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1773427082, now seen corresponding path program 1 times [2020-10-12 20:59:48,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:48,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641256209] [2020-10-12 20:59:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:48,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:48,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:48,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking...