/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.16.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:58:30,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:58:30,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:58:30,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:58:30,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:58:30,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:58:30,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:58:30,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:58:30,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:58:30,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:58:30,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:58:30,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:58:30,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:58:30,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:58:30,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:58:30,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:58:30,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:58:30,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:58:30,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:58:30,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:58:30,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:58:30,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:58:30,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:58:30,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:58:30,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:58:30,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:58:30,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:58:30,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:58:30,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:58:30,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:58:30,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:58:30,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:58:30,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:58:30,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:58:30,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:58:30,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:58:30,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:58:30,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:58:30,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:58:30,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:58:30,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:58:30,719 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 20:58:30,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:58:30,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:58:30,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:58:30,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:58:30,766 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:58:30,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:58:30,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:58:30,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:58:30,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:58:30,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:58:30,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:58:30,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:58:30,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:58:30,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:58:30,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:58:30,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:58:30,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:58:30,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:58:30,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:58:30,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:58:30,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:58:30,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:58:30,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:58:30,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:58:30,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:58:30,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:58:30,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:58:30,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:58:30,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:58:30,773 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 20:58:31,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:58:31,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:58:31,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:58:31,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:58:31,147 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:58:31,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-2.c [2020-10-12 20:58:31,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ce15562d/4fa42756d6f049738d01fdb9a1ecf7c7/FLAGcca00d3d1 [2020-10-12 20:58:31,877 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:58:31,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-2.c [2020-10-12 20:58:31,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ce15562d/4fa42756d6f049738d01fdb9a1ecf7c7/FLAGcca00d3d1 [2020-10-12 20:58:32,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ce15562d/4fa42756d6f049738d01fdb9a1ecf7c7 [2020-10-12 20:58:32,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:58:32,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:58:32,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:58:32,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:58:32,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:58:32,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:58:32" (1/1) ... [2020-10-12 20:58:32,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16661b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:32, skipping insertion in model container [2020-10-12 20:58:32,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:58:32" (1/1) ... [2020-10-12 20:58:32,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:58:32,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:58:32,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:58:32,790 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:58:32,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:58:33,040 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:58:33,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:33 WrapperNode [2020-10-12 20:58:33,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:58:33,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:58:33,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:58:33,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:58:33,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:33" (1/1) ... [2020-10-12 20:58:33,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:33" (1/1) ... [2020-10-12 20:58:33,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:33" (1/1) ... [2020-10-12 20:58:33,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:33" (1/1) ... [2020-10-12 20:58:33,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:33" (1/1) ... [2020-10-12 20:58:33,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:33" (1/1) ... [2020-10-12 20:58:33,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:33" (1/1) ... [2020-10-12 20:58:33,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:58:33,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:58:33,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:58:33,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:58:33,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:33" (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 20:58:33,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:58:33,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:58:33,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:58:33,319 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:58:33,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:58:33,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:58:33,320 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:58:33,321 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:58:33,321 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:58:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:58:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:58:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:58:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:58:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:58:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:58:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:58:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:58:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:58:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:58:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:58:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:58:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:58:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:58:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:58:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:58:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:58:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:58:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:58:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:58:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:58:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:58:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:58:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:58:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:58:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:58:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:58:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:58:33,782 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:58:34,602 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:58:34,603 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:58:34,631 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:58:34,632 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:58:34,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:58:34 BoogieIcfgContainer [2020-10-12 20:58:34,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:58:34,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:58:34,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:58:34,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:58:34,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:58:32" (1/3) ... [2020-10-12 20:58:34,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d50d046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:58:34, skipping insertion in model container [2020-10-12 20:58:34,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:58:33" (2/3) ... [2020-10-12 20:58:34,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d50d046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:58:34, skipping insertion in model container [2020-10-12 20:58:34,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:58:34" (3/3) ... [2020-10-12 20:58:34,647 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.16.i.cil-2.c [2020-10-12 20:58:34,659 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:58:34,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:58:34,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:58:34,711 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:58:34,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:58:34,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:58:34,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:58:34,712 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:58:34,712 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:58:34,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:58:34,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:58:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-10-12 20:58:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 20:58:34,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:34,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:34,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:34,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:34,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1150770581, now seen corresponding path program 1 times [2020-10-12 20:58:34,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:34,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208137609] [2020-10-12 20:58:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:35,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:36,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:36,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 20:58:36,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:36,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1280 [2020-10-12 20:58:36,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:58:36,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:58:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:36,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:36,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:36,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:36,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:36,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:58:36,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:36,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:36,463 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 20:58:36,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208137609] [2020-10-12 20:58:36,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:36,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:36,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938438551] [2020-10-12 20:58:36,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:36,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:36,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:36,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:36,491 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 5 states. [2020-10-12 20:58:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:37,525 INFO L93 Difference]: Finished difference Result 351 states and 594 transitions. [2020-10-12 20:58:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:37,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-12 20:58:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:37,540 INFO L225 Difference]: With dead ends: 351 [2020-10-12 20:58:37,540 INFO L226 Difference]: Without dead ends: 178 [2020-10-12 20:58:37,545 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 20:58:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-12 20:58:37,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 161. [2020-10-12 20:58:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-12 20:58:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 250 transitions. [2020-10-12 20:58:37,601 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 250 transitions. Word has length 50 [2020-10-12 20:58:37,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:37,602 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 250 transitions. [2020-10-12 20:58:37,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 250 transitions. [2020-10-12 20:58:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:58:37,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:37,606 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, 1, 1] [2020-10-12 20:58:37,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:58:37,606 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:37,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1880300276, now seen corresponding path program 1 times [2020-10-12 20:58:37,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:37,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463301456] [2020-10-12 20:58:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:37,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:38,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:38,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:39,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:39,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:58:39,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-10-12 20:58:39,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:58:39,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:39,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:39,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:58:39,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:39,151 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 20:58:39,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463301456] [2020-10-12 20:58:39,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:39,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:39,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330957077] [2020-10-12 20:58:39,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:39,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:39,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:39,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:39,155 INFO L87 Difference]: Start difference. First operand 161 states and 250 transitions. Second operand 5 states. [2020-10-12 20:58:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:39,854 INFO L93 Difference]: Finished difference Result 314 states and 485 transitions. [2020-10-12 20:58:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:39,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-12 20:58:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:39,857 INFO L225 Difference]: With dead ends: 314 [2020-10-12 20:58:39,858 INFO L226 Difference]: Without dead ends: 178 [2020-10-12 20:58:39,860 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 20:58:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-12 20:58:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 161. [2020-10-12 20:58:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-12 20:58:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 249 transitions. [2020-10-12 20:58:39,873 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 249 transitions. Word has length 63 [2020-10-12 20:58:39,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:39,873 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 249 transitions. [2020-10-12 20:58:39,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 249 transitions. [2020-10-12 20:58:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:58:39,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:39,877 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, 1] [2020-10-12 20:58:39,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:58:39,877 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:39,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:39,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1667920068, now seen corresponding path program 1 times [2020-10-12 20:58:39,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:39,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445817064] [2020-10-12 20:58:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:39,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:42,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:42,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:44,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:58:44,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4951 [2020-10-12 20:58:44,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:58:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:58:44,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:44,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:44,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:44,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:44,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:44,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:44,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:58:44,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:44,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:45,014 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 20:58:45,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445817064] [2020-10-12 20:58:45,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:45,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:45,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959352325] [2020-10-12 20:58:45,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:45,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:45,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:45,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:45,017 INFO L87 Difference]: Start difference. First operand 161 states and 249 transitions. Second operand 5 states. [2020-10-12 20:58:45,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:45,799 INFO L93 Difference]: Finished difference Result 314 states and 484 transitions. [2020-10-12 20:58:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:45,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:58:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:45,801 INFO L225 Difference]: With dead ends: 314 [2020-10-12 20:58:45,802 INFO L226 Difference]: Without dead ends: 178 [2020-10-12 20:58:45,803 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 20:58:45,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-12 20:58:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 171. [2020-10-12 20:58:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-12 20:58:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 261 transitions. [2020-10-12 20:58:45,828 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 261 transitions. Word has length 64 [2020-10-12 20:58:45,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:45,829 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 261 transitions. [2020-10-12 20:58:45,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 261 transitions. [2020-10-12 20:58:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:58:45,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:45,836 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, 1, 1] [2020-10-12 20:58:45,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:58:45,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:45,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:45,837 INFO L82 PathProgramCache]: Analyzing trace with hash -731287213, now seen corresponding path program 1 times [2020-10-12 20:58:45,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:45,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287794483] [2020-10-12 20:58:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:46,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:58:46,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-12 20:58:46,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:58:46,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:46,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:46,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:46,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:46,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:46,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:46,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:46,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:46,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:46,915 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 20:58:46,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287794483] [2020-10-12 20:58:46,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:46,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:46,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137958111] [2020-10-12 20:58:46,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:46,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:46,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:46,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:46,918 INFO L87 Difference]: Start difference. First operand 171 states and 261 transitions. Second operand 5 states. [2020-10-12 20:58:47,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:47,571 INFO L93 Difference]: Finished difference Result 312 states and 481 transitions. [2020-10-12 20:58:47,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:47,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:58:47,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:47,573 INFO L225 Difference]: With dead ends: 312 [2020-10-12 20:58:47,575 INFO L226 Difference]: Without dead ends: 176 [2020-10-12 20:58:47,576 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 20:58:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-12 20:58:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2020-10-12 20:58:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-12 20:58:47,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 260 transitions. [2020-10-12 20:58:47,594 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 260 transitions. Word has length 64 [2020-10-12 20:58:47,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:47,595 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 260 transitions. [2020-10-12 20:58:47,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:47,595 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 260 transitions. [2020-10-12 20:58:47,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:58:47,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:47,596 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, 1, 1] [2020-10-12 20:58:47,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:58:47,597 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:47,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:47,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1363072818, now seen corresponding path program 1 times [2020-10-12 20:58:47,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:47,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787364412] [2020-10-12 20:58:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:47,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:48,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:48,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:58:48,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:48,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-12 20:58:48,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:58:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:48,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:48,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:48,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:48,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:48,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:58:48,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:48,197 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 20:58:48,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787364412] [2020-10-12 20:58:48,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:48,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:48,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829683543] [2020-10-12 20:58:48,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:48,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:48,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:48,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:48,200 INFO L87 Difference]: Start difference. First operand 171 states and 260 transitions. Second operand 5 states. [2020-10-12 20:58:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:48,966 INFO L93 Difference]: Finished difference Result 311 states and 479 transitions. [2020-10-12 20:58:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:48,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:58:48,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:48,968 INFO L225 Difference]: With dead ends: 311 [2020-10-12 20:58:48,969 INFO L226 Difference]: Without dead ends: 175 [2020-10-12 20:58:48,970 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 20:58:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-12 20:58:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2020-10-12 20:58:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-12 20:58:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 259 transitions. [2020-10-12 20:58:48,980 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 259 transitions. Word has length 64 [2020-10-12 20:58:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:48,980 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 259 transitions. [2020-10-12 20:58:48,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 259 transitions. [2020-10-12 20:58:48,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:58:48,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:48,982 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, 1, 1] [2020-10-12 20:58:48,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:58:48,982 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:48,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:48,983 INFO L82 PathProgramCache]: Analyzing trace with hash 990130909, now seen corresponding path program 1 times [2020-10-12 20:58:48,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:48,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354293064] [2020-10-12 20:58:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:49,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:49,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:54,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:58:54,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:58:54,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:58:54,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:58:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:58:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:58:54,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:54,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:54,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:54,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:54,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:54,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:54,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:58:54,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:54,243 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 20:58:54,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354293064] [2020-10-12 20:58:54,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:58:54,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:58:54,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729906779] [2020-10-12 20:58:54,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:58:54,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:54,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:58:54,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:58:54,245 INFO L87 Difference]: Start difference. First operand 171 states and 259 transitions. Second operand 8 states. [2020-10-12 20:58:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:55,690 INFO L93 Difference]: Finished difference Result 462 states and 713 transitions. [2020-10-12 20:58:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:58:55,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-10-12 20:58:55,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:55,693 INFO L225 Difference]: With dead ends: 462 [2020-10-12 20:58:55,693 INFO L226 Difference]: Without dead ends: 326 [2020-10-12 20:58:55,694 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 20:58:55,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-12 20:58:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 278. [2020-10-12 20:58:55,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-12 20:58:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 433 transitions. [2020-10-12 20:58:55,707 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 433 transitions. Word has length 65 [2020-10-12 20:58:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:55,707 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 433 transitions. [2020-10-12 20:58:55,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:58:55,708 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 433 transitions. [2020-10-12 20:58:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:58:55,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:55,710 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, 1, 1] [2020-10-12 20:58:55,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:58:55,711 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:55,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1009168811, now seen corresponding path program 1 times [2020-10-12 20:58:55,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:55,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429322998] [2020-10-12 20:58:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:56,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:56,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:58:56,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-12 20:58:56,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:58:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:58:56,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:56,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:56,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:56,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:56,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:56,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:56,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:56,371 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 20:58:56,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429322998] [2020-10-12 20:58:56,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:56,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:56,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216823427] [2020-10-12 20:58:56,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:56,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:56,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:56,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:56,374 INFO L87 Difference]: Start difference. First operand 278 states and 433 transitions. Second operand 5 states. [2020-10-12 20:58:57,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:57,267 INFO L93 Difference]: Finished difference Result 719 states and 1138 transitions. [2020-10-12 20:58:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:57,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-12 20:58:57,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:57,277 INFO L225 Difference]: With dead ends: 719 [2020-10-12 20:58:57,277 INFO L226 Difference]: Without dead ends: 476 [2020-10-12 20:58:57,278 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 20:58:57,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-12 20:58:57,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 356. [2020-10-12 20:58:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-12 20:58:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 577 transitions. [2020-10-12 20:58:57,294 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 577 transitions. Word has length 67 [2020-10-12 20:58:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:57,295 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 577 transitions. [2020-10-12 20:58:57,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:57,295 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 577 transitions. [2020-10-12 20:58:57,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:58:57,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:57,297 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, 1, 1, 1] [2020-10-12 20:58:57,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:58:57,297 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:57,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:57,297 INFO L82 PathProgramCache]: Analyzing trace with hash -190104193, now seen corresponding path program 1 times [2020-10-12 20:58:57,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:57,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849861160] [2020-10-12 20:58:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:57,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:57,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:57,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:58:57,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:57,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-12 20:58:57,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:58:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:58:57,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:57,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:57,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:57,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:57,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:57,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:57,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:57,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:57,698 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 20:58:57,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849861160] [2020-10-12 20:58:57,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:57,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:57,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282729053] [2020-10-12 20:58:57,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:57,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:57,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:57,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:57,700 INFO L87 Difference]: Start difference. First operand 356 states and 577 transitions. Second operand 5 states. [2020-10-12 20:58:58,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:58,443 INFO L93 Difference]: Finished difference Result 683 states and 1095 transitions. [2020-10-12 20:58:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:58,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-12 20:58:58,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:58,448 INFO L225 Difference]: With dead ends: 683 [2020-10-12 20:58:58,449 INFO L226 Difference]: Without dead ends: 362 [2020-10-12 20:58:58,450 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 20:58:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-12 20:58:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 322. [2020-10-12 20:58:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-12 20:58:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 509 transitions. [2020-10-12 20:58:58,464 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 509 transitions. Word has length 68 [2020-10-12 20:58:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:58,465 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 509 transitions. [2020-10-12 20:58:58,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 509 transitions. [2020-10-12 20:58:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:58:58,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:58,466 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, 1, 1] [2020-10-12 20:58:58,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:58:58,467 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:58,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:58,467 INFO L82 PathProgramCache]: Analyzing trace with hash -631300646, now seen corresponding path program 1 times [2020-10-12 20:58:58,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:58,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436016207] [2020-10-12 20:58:58,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:58,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:58,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:58,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:03,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:03,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:59:03,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:03,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:59:03,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:59:03,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:59:03,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:59:03,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:03,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:03,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:03,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:03,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:03,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:03,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:03,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:03,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:03,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:03,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:03,607 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 20:59:03,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436016207] [2020-10-12 20:59:03,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:03,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:59:03,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980673982] [2020-10-12 20:59:03,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:59:03,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:03,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:59:03,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:03,610 INFO L87 Difference]: Start difference. First operand 322 states and 509 transitions. Second operand 6 states. [2020-10-12 20:59:04,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:04,267 INFO L93 Difference]: Finished difference Result 527 states and 829 transitions. [2020-10-12 20:59:04,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:59:04,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-12 20:59:04,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:04,270 INFO L225 Difference]: With dead ends: 527 [2020-10-12 20:59:04,271 INFO L226 Difference]: Without dead ends: 339 [2020-10-12 20:59:04,271 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 20:59:04,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-12 20:59:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 329. [2020-10-12 20:59:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-12 20:59:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 517 transitions. [2020-10-12 20:59:04,285 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 517 transitions. Word has length 78 [2020-10-12 20:59:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:04,285 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 517 transitions. [2020-10-12 20:59:04,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:59:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 517 transitions. [2020-10-12 20:59:04,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:59:04,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:04,287 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, 1, 1] [2020-10-12 20:59:04,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:59:04,288 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:04,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:04,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1342703302, now seen corresponding path program 1 times [2020-10-12 20:59:04,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:04,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281723015] [2020-10-12 20:59:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:04,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:04,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:07,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:09,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:09,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:59:09,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:09,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:59:09,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:59:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:59:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:09,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:09,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:09,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:09,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:09,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:09,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:09,393 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 20:59:09,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281723015] [2020-10-12 20:59:09,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:09,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:09,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093165190] [2020-10-12 20:59:09,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:09,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:09,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:09,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:09,396 INFO L87 Difference]: Start difference. First operand 329 states and 517 transitions. Second operand 5 states. [2020-10-12 20:59:10,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:10,226 INFO L93 Difference]: Finished difference Result 529 states and 829 transitions. [2020-10-12 20:59:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:10,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:59:10,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:10,230 INFO L225 Difference]: With dead ends: 529 [2020-10-12 20:59:10,230 INFO L226 Difference]: Without dead ends: 333 [2020-10-12 20:59:10,232 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 20:59:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-12 20:59:10,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2020-10-12 20:59:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-12 20:59:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 516 transitions. [2020-10-12 20:59:10,263 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 516 transitions. Word has length 78 [2020-10-12 20:59:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:10,264 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 516 transitions. [2020-10-12 20:59:10,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 516 transitions. [2020-10-12 20:59:10,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:59:10,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:10,266 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, 1, 1] [2020-10-12 20:59:10,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:59:10,267 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:10,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:10,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2109147937, now seen corresponding path program 1 times [2020-10-12 20:59:10,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:10,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502762547] [2020-10-12 20:59:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:11,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:12,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:14,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:14,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:59:14,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4340 [2020-10-12 20:59:14,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:59:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:59:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:14,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:14,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:14,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:14,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:14,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:14,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:59:14,696 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 20:59:14,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502762547] [2020-10-12 20:59:14,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:14,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:14,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282935471] [2020-10-12 20:59:14,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:14,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:14,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:14,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:14,699 INFO L87 Difference]: Start difference. First operand 329 states and 516 transitions. Second operand 5 states. [2020-10-12 20:59:15,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:15,458 INFO L93 Difference]: Finished difference Result 529 states and 828 transitions. [2020-10-12 20:59:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:15,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:59:15,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:15,461 INFO L225 Difference]: With dead ends: 529 [2020-10-12 20:59:15,462 INFO L226 Difference]: Without dead ends: 333 [2020-10-12 20:59:15,462 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 20:59:15,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-12 20:59:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2020-10-12 20:59:15,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-12 20:59:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 515 transitions. [2020-10-12 20:59:15,476 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 515 transitions. Word has length 79 [2020-10-12 20:59:15,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:15,478 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 515 transitions. [2020-10-12 20:59:15,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:15,478 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 515 transitions. [2020-10-12 20:59:15,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:59:15,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:15,480 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, 1, 1] [2020-10-12 20:59:15,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:59:15,480 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:15,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:15,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2103310337, now seen corresponding path program 1 times [2020-10-12 20:59:15,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:15,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064814854] [2020-10-12 20:59:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:15,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:15,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:19,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:19,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:59:19,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4480 [2020-10-12 20:59:19,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:59:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:59:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:20,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:20,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:20,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:20,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:20,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:20,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:59:20,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:20,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:20,051 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 20:59:20,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064814854] [2020-10-12 20:59:20,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:20,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:20,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615356490] [2020-10-12 20:59:20,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:20,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:20,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:20,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:20,053 INFO L87 Difference]: Start difference. First operand 329 states and 515 transitions. Second operand 5 states. [2020-10-12 20:59:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:20,693 INFO L93 Difference]: Finished difference Result 529 states and 827 transitions. [2020-10-12 20:59:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:20,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:59:20,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:20,697 INFO L225 Difference]: With dead ends: 529 [2020-10-12 20:59:20,697 INFO L226 Difference]: Without dead ends: 333 [2020-10-12 20:59:20,698 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 20:59:20,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-12 20:59:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2020-10-12 20:59:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-12 20:59:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 514 transitions. [2020-10-12 20:59:20,710 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 514 transitions. Word has length 80 [2020-10-12 20:59:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:20,711 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 514 transitions. [2020-10-12 20:59:20,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 514 transitions. [2020-10-12 20:59:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:59:20,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:20,712 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, 1, 1] [2020-10-12 20:59:20,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:59:20,713 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:20,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1474585954, now seen corresponding path program 1 times [2020-10-12 20:59:20,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:20,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136156842] [2020-10-12 20:59:20,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:20,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:20,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:21,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:21,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:59:21,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:59:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-12 20:59:21,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:59:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:59:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:21,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:21,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:21,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:21,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:21,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:21,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:21,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:21,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:59:21,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136156842] [2020-10-12 20:59:21,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:21,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:21,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210596092] [2020-10-12 20:59:21,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:21,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:21,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:21,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:21,486 INFO L87 Difference]: Start difference. First operand 329 states and 514 transitions. Second operand 5 states. [2020-10-12 20:59:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:22,322 INFO L93 Difference]: Finished difference Result 578 states and 903 transitions. [2020-10-12 20:59:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:22,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:59:22,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:22,329 INFO L225 Difference]: With dead ends: 578 [2020-10-12 20:59:22,330 INFO L226 Difference]: Without dead ends: 411 [2020-10-12 20:59:22,331 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 20:59:22,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-12 20:59:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 361. [2020-10-12 20:59:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-12 20:59:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 572 transitions. [2020-10-12 20:59:22,346 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 572 transitions. Word has length 80 [2020-10-12 20:59:22,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:22,347 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 572 transitions. [2020-10-12 20:59:22,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 572 transitions. [2020-10-12 20:59:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:59:22,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:22,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:22,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:59:22,353 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:22,353 INFO L82 PathProgramCache]: Analyzing trace with hash -745662042, now seen corresponding path program 1 times [2020-10-12 20:59:22,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:22,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418409502] [2020-10-12 20:59:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:22,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:22,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:24,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:24,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:27,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:27,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:59:27,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:27,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:59:27,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:27,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:59:27,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:59:27,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:59:27,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:27,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:27,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:27,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:27,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:27,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:27,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:27,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:27,457 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 20:59:27,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418409502] [2020-10-12 20:59:27,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:27,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:27,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445847187] [2020-10-12 20:59:27,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:27,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:27,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:27,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:27,460 INFO L87 Difference]: Start difference. First operand 361 states and 572 transitions. Second operand 5 states. [2020-10-12 20:59:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:28,149 INFO L93 Difference]: Finished difference Result 608 states and 955 transitions. [2020-10-12 20:59:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:28,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:59:28,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:28,152 INFO L225 Difference]: With dead ends: 608 [2020-10-12 20:59:28,152 INFO L226 Difference]: Without dead ends: 399 [2020-10-12 20:59:28,153 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 20:59:28,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-12 20:59:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 370. [2020-10-12 20:59:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-12 20:59:28,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 581 transitions. [2020-10-12 20:59:28,166 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 581 transitions. Word has length 81 [2020-10-12 20:59:28,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:28,166 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 581 transitions. [2020-10-12 20:59:28,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 581 transitions. [2020-10-12 20:59:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:59:28,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:28,168 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, 1, 1] [2020-10-12 20:59:28,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:59:28,168 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:28,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2009636452, now seen corresponding path program 1 times [2020-10-12 20:59:28,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:28,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698395803] [2020-10-12 20:59:28,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:28,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:28,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:28,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:59:28,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-12 20:59:28,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:59:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:59:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:28,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:28,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:28,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:28,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:59:28,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698395803] [2020-10-12 20:59:28,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:28,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:28,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561815982] [2020-10-12 20:59:28,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:28,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:28,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:28,546 INFO L87 Difference]: Start difference. First operand 370 states and 581 transitions. Second operand 5 states. [2020-10-12 20:59:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:29,520 INFO L93 Difference]: Finished difference Result 923 states and 1462 transitions. [2020-10-12 20:59:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:29,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:59:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:29,525 INFO L225 Difference]: With dead ends: 923 [2020-10-12 20:59:29,525 INFO L226 Difference]: Without dead ends: 578 [2020-10-12 20:59:29,526 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 20:59:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-12 20:59:29,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 450. [2020-10-12 20:59:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-12 20:59:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 727 transitions. [2020-10-12 20:59:29,542 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 727 transitions. Word has length 81 [2020-10-12 20:59:29,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:29,542 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 727 transitions. [2020-10-12 20:59:29,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 727 transitions. [2020-10-12 20:59:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:59:29,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:29,544 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, 1, 1, 1] [2020-10-12 20:59:29,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:59:29,544 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:29,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1139829992, now seen corresponding path program 1 times [2020-10-12 20:59:29,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:29,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27969943] [2020-10-12 20:59:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:29,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:59:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-12 20:59:29,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:59:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:59:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:29,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:29,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:29,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:29,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:29,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:29,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:29,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:59:29,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27969943] [2020-10-12 20:59:29,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:29,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:29,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941296449] [2020-10-12 20:59:29,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:29,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:29,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:29,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:29,958 INFO L87 Difference]: Start difference. First operand 450 states and 727 transitions. Second operand 5 states. [2020-10-12 20:59:30,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:30,879 INFO L93 Difference]: Finished difference Result 987 states and 1581 transitions. [2020-10-12 20:59:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:30,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:59:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:30,889 INFO L225 Difference]: With dead ends: 987 [2020-10-12 20:59:30,889 INFO L226 Difference]: Without dead ends: 562 [2020-10-12 20:59:30,890 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 20:59:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-12 20:59:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 450. [2020-10-12 20:59:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-12 20:59:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 727 transitions. [2020-10-12 20:59:30,907 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 727 transitions. Word has length 82 [2020-10-12 20:59:30,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:30,907 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 727 transitions. [2020-10-12 20:59:30,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 727 transitions. [2020-10-12 20:59:30,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:59:30,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:30,909 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, 1, 1] [2020-10-12 20:59:30,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:59:30,910 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:30,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:30,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1460325682, now seen corresponding path program 1 times [2020-10-12 20:59:30,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:30,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282946270] [2020-10-12 20:59:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:35,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:35,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:59:35,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:59:35,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:59:35,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:59:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:59:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:59:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:36,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:36,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:36,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:36,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:36,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:36,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:36,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:36,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:36,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:36,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:36,049 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 20:59:36,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282946270] [2020-10-12 20:59:36,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:36,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:36,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75793157] [2020-10-12 20:59:36,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:36,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:36,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:36,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:36,052 INFO L87 Difference]: Start difference. First operand 450 states and 727 transitions. Second operand 5 states. [2020-10-12 20:59:36,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:36,898 INFO L93 Difference]: Finished difference Result 919 states and 1482 transitions. [2020-10-12 20:59:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:36,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:59:36,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:36,903 INFO L225 Difference]: With dead ends: 919 [2020-10-12 20:59:36,903 INFO L226 Difference]: Without dead ends: 660 [2020-10-12 20:59:36,904 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 20:59:36,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-12 20:59:36,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 480. [2020-10-12 20:59:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-12 20:59:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 771 transitions. [2020-10-12 20:59:36,923 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 771 transitions. Word has length 82 [2020-10-12 20:59:36,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:36,924 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 771 transitions. [2020-10-12 20:59:36,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:36,924 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 771 transitions. [2020-10-12 20:59:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 20:59:36,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:36,926 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-12 20:59:36,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:59:36,926 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:36,927 INFO L82 PathProgramCache]: Analyzing trace with hash -326366945, now seen corresponding path program 1 times [2020-10-12 20:59:36,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:36,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997207244] [2020-10-12 20:59:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:36,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:37,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:37,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:41,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:41,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:59:41,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:41,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:59:41,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:59:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 20:59:41,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:42,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:42,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:42,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:42,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:42,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:59:42,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997207244] [2020-10-12 20:59:42,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:42,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:59:42,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695960938] [2020-10-12 20:59:42,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:59:42,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:42,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:59:42,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:59:42,175 INFO L87 Difference]: Start difference. First operand 480 states and 771 transitions. Second operand 9 states. [2020-10-12 20:59:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:43,766 INFO L93 Difference]: Finished difference Result 1003 states and 1602 transitions. [2020-10-12 20:59:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:59:43,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-10-12 20:59:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:43,771 INFO L225 Difference]: With dead ends: 1003 [2020-10-12 20:59:43,771 INFO L226 Difference]: Without dead ends: 739 [2020-10-12 20:59:43,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 4 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 20:59:43,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-10-12 20:59:43,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 489. [2020-10-12 20:59:43,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-12 20:59:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 782 transitions. [2020-10-12 20:59:43,791 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 782 transitions. Word has length 83 [2020-10-12 20:59:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:43,791 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 782 transitions. [2020-10-12 20:59:43,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:59:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 782 transitions. [2020-10-12 20:59:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:59:43,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:43,793 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, 1] [2020-10-12 20:59:43,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:59:43,794 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:43,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2112636429, now seen corresponding path program 1 times [2020-10-12 20:59:43,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:43,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128760021] [2020-10-12 20:59:43,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:44,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:44,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:59:44,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:59:44,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-12 20:59:44,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:59:44,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:44,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:44,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:44,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:44,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:44,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:44,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:44,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:44,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:44,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:44,147 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 20:59:44,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128760021] [2020-10-12 20:59:44,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:44,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:44,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226239449] [2020-10-12 20:59:44,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:44,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:44,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:44,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:44,150 INFO L87 Difference]: Start difference. First operand 489 states and 782 transitions. Second operand 5 states. [2020-10-12 20:59:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:45,198 INFO L93 Difference]: Finished difference Result 1152 states and 1849 transitions. [2020-10-12 20:59:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:45,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:59:45,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:45,202 INFO L225 Difference]: With dead ends: 1152 [2020-10-12 20:59:45,202 INFO L226 Difference]: Without dead ends: 687 [2020-10-12 20:59:45,204 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 20:59:45,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2020-10-12 20:59:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 569. [2020-10-12 20:59:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-12 20:59:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 926 transitions. [2020-10-12 20:59:45,222 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 926 transitions. Word has length 89 [2020-10-12 20:59:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:45,222 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 926 transitions. [2020-10-12 20:59:45,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:45,223 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 926 transitions. [2020-10-12 20:59:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:59:45,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:45,225 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, 1] [2020-10-12 20:59:45,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:59:45,225 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:45,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:45,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1934184373, now seen corresponding path program 1 times [2020-10-12 20:59:45,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:45,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633472330] [2020-10-12 20:59:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:45,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:45,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:45,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:59:45,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-12 20:59:45,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:45,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:45,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:59:45,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:45,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:45,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:45,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:45,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:45,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:45,821 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 20:59:45,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633472330] [2020-10-12 20:59:45,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:45,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:45,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824080829] [2020-10-12 20:59:45,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:45,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:45,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:45,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:45,823 INFO L87 Difference]: Start difference. First operand 569 states and 926 transitions. Second operand 5 states. [2020-10-12 20:59:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:46,619 INFO L93 Difference]: Finished difference Result 1210 states and 1970 transitions. [2020-10-12 20:59:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:46,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:59:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:46,623 INFO L225 Difference]: With dead ends: 1210 [2020-10-12 20:59:46,623 INFO L226 Difference]: Without dead ends: 665 [2020-10-12 20:59:46,625 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 20:59:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2020-10-12 20:59:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 617. [2020-10-12 20:59:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-12 20:59:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1008 transitions. [2020-10-12 20:59:46,645 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1008 transitions. Word has length 89 [2020-10-12 20:59:46,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:46,646 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 1008 transitions. [2020-10-12 20:59:46,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:46,646 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1008 transitions. [2020-10-12 20:59:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:59:46,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:46,648 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, 1, 1] [2020-10-12 20:59:46,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:59:46,649 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:46,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:46,649 INFO L82 PathProgramCache]: Analyzing trace with hash 2096577735, now seen corresponding path program 1 times [2020-10-12 20:59:46,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:46,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328369989] [2020-10-12 20:59:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:46,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:46,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 20:59:46,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:59:46,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-12 20:59:46,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:46,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:46,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:59:46,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:46,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:46,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:46,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:46,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:46,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:46,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:46,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:46,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:46,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:46,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:46,963 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 20:59:46,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328369989] [2020-10-12 20:59:46,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:46,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:46,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624240904] [2020-10-12 20:59:46,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:46,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:46,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:46,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:46,965 INFO L87 Difference]: Start difference. First operand 617 states and 1008 transitions. Second operand 5 states. [2020-10-12 20:59:47,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:47,970 INFO L93 Difference]: Finished difference Result 1312 states and 2130 transitions. [2020-10-12 20:59:47,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:47,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-12 20:59:47,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:47,974 INFO L225 Difference]: With dead ends: 1312 [2020-10-12 20:59:47,974 INFO L226 Difference]: Without dead ends: 719 [2020-10-12 20:59:47,975 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 20:59:47,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-10-12 20:59:47,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 537. [2020-10-12 20:59:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-12 20:59:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 864 transitions. [2020-10-12 20:59:47,993 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 864 transitions. Word has length 90 [2020-10-12 20:59:47,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:47,994 INFO L479 AbstractCegarLoop]: Abstraction has 537 states and 864 transitions. [2020-10-12 20:59:47,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 864 transitions. [2020-10-12 20:59:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:59:47,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:47,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:47,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:59:47,996 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:47,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:47,997 INFO L82 PathProgramCache]: Analyzing trace with hash 419187354, now seen corresponding path program 1 times [2020-10-12 20:59:47,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:47,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738734928] [2020-10-12 20:59:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:48,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:48,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:52,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:53,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:53,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:59:53,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:59:53,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:59:53,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:53,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:59:53,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:53,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:59:53,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:53,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:53,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:53,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:53,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:53,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:53,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:59:53,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738734928] [2020-10-12 20:59:53,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:53,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:59:53,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558048382] [2020-10-12 20:59:53,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:59:53,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:53,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:59:53,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:59:53,546 INFO L87 Difference]: Start difference. First operand 537 states and 864 transitions. Second operand 9 states. [2020-10-12 20:59:55,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:55,979 INFO L93 Difference]: Finished difference Result 1405 states and 2254 transitions. [2020-10-12 20:59:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:59:55,982 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-12 20:59:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:55,987 INFO L225 Difference]: With dead ends: 1405 [2020-10-12 20:59:55,987 INFO L226 Difference]: Without dead ends: 1117 [2020-10-12 20:59:55,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:59:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2020-10-12 20:59:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 610. [2020-10-12 20:59:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-10-12 20:59:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 984 transitions. [2020-10-12 20:59:56,012 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 984 transitions. Word has length 95 [2020-10-12 20:59:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:56,012 INFO L479 AbstractCegarLoop]: Abstraction has 610 states and 984 transitions. [2020-10-12 20:59:56,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:59:56,013 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 984 transitions. [2020-10-12 20:59:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:59:56,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:56,015 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:59:56,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:59:56,015 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:56,015 INFO L82 PathProgramCache]: Analyzing trace with hash 535948876, now seen corresponding path program 1 times [2020-10-12 20:59:56,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:56,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656455418] [2020-10-12 20:59:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:59,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:59:59,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3328 [2020-10-12 20:59:59,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-12 20:59:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:59:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:59,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:59,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:59,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:59,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:59,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:59:59,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 20:59:59,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656455418] [2020-10-12 20:59:59,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:59,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:59,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217738855] [2020-10-12 20:59:59,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:59,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:59,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:59,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:59,452 INFO L87 Difference]: Start difference. First operand 610 states and 984 transitions. Second operand 5 states. [2020-10-12 21:00:00,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:00,266 INFO L93 Difference]: Finished difference Result 1302 states and 2102 transitions. [2020-10-12 21:00:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:00,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 21:00:00,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:00,271 INFO L225 Difference]: With dead ends: 1302 [2020-10-12 21:00:00,271 INFO L226 Difference]: Without dead ends: 716 [2020-10-12 21:00:00,273 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 21:00:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-12 21:00:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 662. [2020-10-12 21:00:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-12 21:00:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1074 transitions. [2020-10-12 21:00:00,295 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1074 transitions. Word has length 102 [2020-10-12 21:00:00,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:00,296 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 1074 transitions. [2020-10-12 21:00:00,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1074 transitions. [2020-10-12 21:00:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 21:00:00,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:00,298 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:00,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 21:00:00,298 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:00,299 INFO L82 PathProgramCache]: Analyzing trace with hash -945491848, now seen corresponding path program 1 times [2020-10-12 21:00:00,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:00,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056747055] [2020-10-12 21:00:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:00,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:02,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 21:00:02,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2366 [2020-10-12 21:00:02,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 21:00:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:00:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:02,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:02,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:02,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:00:02,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 21:00:02,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056747055] [2020-10-12 21:00:02,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:02,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:02,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064210211] [2020-10-12 21:00:02,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:02,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:02,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:02,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:02,752 INFO L87 Difference]: Start difference. First operand 662 states and 1074 transitions. Second operand 5 states. [2020-10-12 21:00:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:03,591 INFO L93 Difference]: Finished difference Result 1380 states and 2228 transitions. [2020-10-12 21:00:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:03,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 21:00:03,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:03,594 INFO L225 Difference]: With dead ends: 1380 [2020-10-12 21:00:03,594 INFO L226 Difference]: Without dead ends: 742 [2020-10-12 21:00:03,596 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 21:00:03,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-12 21:00:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 662. [2020-10-12 21:00:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-12 21:00:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1072 transitions. [2020-10-12 21:00:03,616 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1072 transitions. Word has length 105 [2020-10-12 21:00:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:03,616 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 1072 transitions. [2020-10-12 21:00:03,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1072 transitions. [2020-10-12 21:00:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 21:00:03,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:03,619 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-12 21:00:03,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 21:00:03,619 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:03,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:03,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1569619635, now seen corresponding path program 1 times [2020-10-12 21:00:03,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:03,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619281683] [2020-10-12 21:00:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:05,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:05,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 21:00:05,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:05,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2297 [2020-10-12 21:00:05,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 21:00:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 21:00:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:05,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:05,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:05,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:05,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:05,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:00:05,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 21:00:06,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619281683] [2020-10-12 21:00:06,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:06,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:06,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990842553] [2020-10-12 21:00:06,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:06,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:06,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:06,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:06,001 INFO L87 Difference]: Start difference. First operand 662 states and 1072 transitions. Second operand 5 states. [2020-10-12 21:00:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:06,783 INFO L93 Difference]: Finished difference Result 1364 states and 2198 transitions. [2020-10-12 21:00:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:06,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 21:00:06,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:06,787 INFO L225 Difference]: With dead ends: 1364 [2020-10-12 21:00:06,787 INFO L226 Difference]: Without dead ends: 726 [2020-10-12 21:00:06,788 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 21:00:06,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-10-12 21:00:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 662. [2020-10-12 21:00:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-12 21:00:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1070 transitions. [2020-10-12 21:00:06,810 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1070 transitions. Word has length 106 [2020-10-12 21:00:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:06,810 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 1070 transitions. [2020-10-12 21:00:06,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1070 transitions. [2020-10-12 21:00:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 21:00:06,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:06,812 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:06,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 21:00:06,813 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:06,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:06,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1868412546, now seen corresponding path program 1 times [2020-10-12 21:00:06,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:06,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769619266] [2020-10-12 21:00:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:06,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:08,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 21:00:08,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:08,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2164 [2020-10-12 21:00:08,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 21:00:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 21:00:08,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:09,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:09,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:09,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:09,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:09,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:00:09,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 21:00:09,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769619266] [2020-10-12 21:00:09,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:09,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:09,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914291776] [2020-10-12 21:00:09,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:09,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:09,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:09,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:09,068 INFO L87 Difference]: Start difference. First operand 662 states and 1070 transitions. Second operand 5 states. [2020-10-12 21:00:10,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:10,106 INFO L93 Difference]: Finished difference Result 1519 states and 2458 transitions. [2020-10-12 21:00:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:10,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 21:00:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:10,110 INFO L225 Difference]: With dead ends: 1519 [2020-10-12 21:00:10,110 INFO L226 Difference]: Without dead ends: 881 [2020-10-12 21:00:10,112 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 21:00:10,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-10-12 21:00:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 740. [2020-10-12 21:00:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-10-12 21:00:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1212 transitions. [2020-10-12 21:00:10,133 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1212 transitions. Word has length 106 [2020-10-12 21:00:10,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:10,133 INFO L479 AbstractCegarLoop]: Abstraction has 740 states and 1212 transitions. [2020-10-12 21:00:10,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1212 transitions. [2020-10-12 21:00:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 21:00:10,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:10,135 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:10,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 21:00:10,136 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:10,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:10,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1056856202, now seen corresponding path program 1 times [2020-10-12 21:00:10,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:10,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344659297] [2020-10-12 21:00:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:10,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:10,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:12,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:12,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 21:00:12,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:12,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2197 [2020-10-12 21:00:12,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 21:00:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 21:00:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:12,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:12,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:12,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:12,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:12,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:12,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 21:00:12,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344659297] [2020-10-12 21:00:12,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:12,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:12,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693650112] [2020-10-12 21:00:12,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:12,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:12,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:12,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:12,415 INFO L87 Difference]: Start difference. First operand 740 states and 1212 transitions. Second operand 5 states. [2020-10-12 21:00:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:13,120 INFO L93 Difference]: Finished difference Result 1494 states and 2444 transitions. [2020-10-12 21:00:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:13,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-12 21:00:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:13,131 INFO L225 Difference]: With dead ends: 1494 [2020-10-12 21:00:13,132 INFO L226 Difference]: Without dead ends: 778 [2020-10-12 21:00:13,133 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 21:00:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-12 21:00:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 740. [2020-10-12 21:00:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-10-12 21:00:13,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1210 transitions. [2020-10-12 21:00:13,155 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1210 transitions. Word has length 107 [2020-10-12 21:00:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:13,155 INFO L479 AbstractCegarLoop]: Abstraction has 740 states and 1210 transitions. [2020-10-12 21:00:13,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:13,156 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1210 transitions. [2020-10-12 21:00:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 21:00:13,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:13,158 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:13,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 21:00:13,158 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:13,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:13,159 INFO L82 PathProgramCache]: Analyzing trace with hash -763132713, now seen corresponding path program 1 times [2020-10-12 21:00:13,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:13,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024479401] [2020-10-12 21:00:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:13,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:13,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:18,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:18,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:18,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:18,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 21:00:18,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:00:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 21:00:18,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 21:00:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 21:00:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:18,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:18,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:18,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:18,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:18,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:18,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:18,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:18,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 21:00:18,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024479401] [2020-10-12 21:00:18,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:18,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 21:00:18,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971781069] [2020-10-12 21:00:18,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 21:00:18,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:18,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 21:00:18,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 21:00:18,420 INFO L87 Difference]: Start difference. First operand 740 states and 1210 transitions. Second operand 8 states. [2020-10-12 21:00:21,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:21,034 INFO L93 Difference]: Finished difference Result 2406 states and 3947 transitions. [2020-10-12 21:00:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:00:21,035 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-10-12 21:00:21,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:21,042 INFO L225 Difference]: With dead ends: 2406 [2020-10-12 21:00:21,042 INFO L226 Difference]: Without dead ends: 1690 [2020-10-12 21:00:21,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:00:21,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2020-10-12 21:00:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1058. [2020-10-12 21:00:21,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-12 21:00:21,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1747 transitions. [2020-10-12 21:00:21,082 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1747 transitions. Word has length 108 [2020-10-12 21:00:21,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:21,083 INFO L479 AbstractCegarLoop]: Abstraction has 1058 states and 1747 transitions. [2020-10-12 21:00:21,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 21:00:21,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1747 transitions. [2020-10-12 21:00:21,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 21:00:21,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:21,086 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:21,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 21:00:21,086 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:21,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:21,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1165139989, now seen corresponding path program 1 times [2020-10-12 21:00:21,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:21,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538865115] [2020-10-12 21:00:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:21,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:21,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:23,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:23,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 21:00:23,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2731 [2020-10-12 21:00:23,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 21:00:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 21:00:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:23,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:23,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:23,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:23,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:23,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:23,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 21:00:23,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538865115] [2020-10-12 21:00:23,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:23,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:23,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474494316] [2020-10-12 21:00:23,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:23,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:23,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:23,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:23,922 INFO L87 Difference]: Start difference. First operand 1058 states and 1747 transitions. Second operand 5 states. [2020-10-12 21:00:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:24,991 INFO L93 Difference]: Finished difference Result 2408 states and 3971 transitions. [2020-10-12 21:00:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:24,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 21:00:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:24,999 INFO L225 Difference]: With dead ends: 2408 [2020-10-12 21:00:24,999 INFO L226 Difference]: Without dead ends: 1375 [2020-10-12 21:00:25,003 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 21:00:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-10-12 21:00:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1058. [2020-10-12 21:00:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-12 21:00:25,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1747 transitions. [2020-10-12 21:00:25,029 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1747 transitions. Word has length 108 [2020-10-12 21:00:25,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:25,029 INFO L479 AbstractCegarLoop]: Abstraction has 1058 states and 1747 transitions. [2020-10-12 21:00:25,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:25,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1747 transitions. [2020-10-12 21:00:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 21:00:25,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:25,032 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:25,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 21:00:25,032 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:25,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:25,033 INFO L82 PathProgramCache]: Analyzing trace with hash -218751330, now seen corresponding path program 1 times [2020-10-12 21:00:25,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:25,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124816854] [2020-10-12 21:00:25,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:25,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:25,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:25,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:29,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:30,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:30,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 21:00:30,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 21:00:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:00:30,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 21:00:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:00:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:30,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:30,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:30,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:30,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:30,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-12 21:00:30,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124816854] [2020-10-12 21:00:30,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:30,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:30,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513975147] [2020-10-12 21:00:30,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:30,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:30,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:30,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:30,116 INFO L87 Difference]: Start difference. First operand 1058 states and 1747 transitions. Second operand 5 states. [2020-10-12 21:00:30,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:30,744 INFO L93 Difference]: Finished difference Result 1777 states and 2933 transitions. [2020-10-12 21:00:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:30,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 21:00:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:30,748 INFO L225 Difference]: With dead ends: 1777 [2020-10-12 21:00:30,748 INFO L226 Difference]: Without dead ends: 1061 [2020-10-12 21:00:30,749 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 21:00:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2020-10-12 21:00:30,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1058. [2020-10-12 21:00:30,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-12 21:00:30,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1746 transitions. [2020-10-12 21:00:30,774 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1746 transitions. Word has length 108 [2020-10-12 21:00:30,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:30,775 INFO L479 AbstractCegarLoop]: Abstraction has 1058 states and 1746 transitions. [2020-10-12 21:00:30,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:30,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1746 transitions. [2020-10-12 21:00:30,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 21:00:30,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:30,778 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:30,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 21:00:30,778 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:30,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:30,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1506008129, now seen corresponding path program 1 times [2020-10-12 21:00:30,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:30,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005084893] [2020-10-12 21:00:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:30,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:30,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:31,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:33,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:33,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 21:00:33,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:33,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2601 [2020-10-12 21:00:33,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 21:00:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 21:00:33,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:33,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:33,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:33,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:33,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:33,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:33,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:00:33,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:33,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:33,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 21:00:33,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005084893] [2020-10-12 21:00:33,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:33,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:33,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038369950] [2020-10-12 21:00:33,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:33,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:33,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:33,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:33,474 INFO L87 Difference]: Start difference. First operand 1058 states and 1746 transitions. Second operand 5 states. [2020-10-12 21:00:34,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:34,252 INFO L93 Difference]: Finished difference Result 2177 states and 3575 transitions. [2020-10-12 21:00:34,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:34,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 21:00:34,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:34,259 INFO L225 Difference]: With dead ends: 2177 [2020-10-12 21:00:34,259 INFO L226 Difference]: Without dead ends: 1144 [2020-10-12 21:00:34,261 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 21:00:34,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2020-10-12 21:00:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1058. [2020-10-12 21:00:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-12 21:00:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1743 transitions. [2020-10-12 21:00:34,290 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1743 transitions. Word has length 109 [2020-10-12 21:00:34,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:34,291 INFO L479 AbstractCegarLoop]: Abstraction has 1058 states and 1743 transitions. [2020-10-12 21:00:34,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1743 transitions. [2020-10-12 21:00:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 21:00:34,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:34,294 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-12 21:00:34,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 21:00:34,294 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:34,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:34,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1138518854, now seen corresponding path program 1 times [2020-10-12 21:00:34,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:34,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020279048] [2020-10-12 21:00:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:34,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:37,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:37,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 21:00:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3130 [2020-10-12 21:00:37,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 21:00:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 21:00:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:37,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:37,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:37,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:37,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:00:37,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 15 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 21:00:37,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020279048] [2020-10-12 21:00:37,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:00:37,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 21:00:37,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667994986] [2020-10-12 21:00:37,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 21:00:37,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:37,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 21:00:37,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:00:37,625 INFO L87 Difference]: Start difference. First operand 1058 states and 1743 transitions. Second operand 9 states. [2020-10-12 21:00:39,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:39,863 INFO L93 Difference]: Finished difference Result 2478 states and 4078 transitions. [2020-10-12 21:00:39,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:00:39,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-12 21:00:39,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:39,871 INFO L225 Difference]: With dead ends: 2478 [2020-10-12 21:00:39,872 INFO L226 Difference]: Without dead ends: 1445 [2020-10-12 21:00:39,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 21:00:39,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-10-12 21:00:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1358. [2020-10-12 21:00:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2020-10-12 21:00:39,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2255 transitions. [2020-10-12 21:00:39,920 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2255 transitions. Word has length 109 [2020-10-12 21:00:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:39,920 INFO L479 AbstractCegarLoop]: Abstraction has 1358 states and 2255 transitions. [2020-10-12 21:00:39,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 21:00:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2255 transitions. [2020-10-12 21:00:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 21:00:39,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:39,924 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:39,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 21:00:39,924 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:39,924 INFO L82 PathProgramCache]: Analyzing trace with hash -945661580, now seen corresponding path program 1 times [2020-10-12 21:00:39,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:39,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171679439] [2020-10-12 21:00:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:39,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:39,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:40,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:40,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:42,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:42,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 21:00:42,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2716 [2020-10-12 21:00:42,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 21:00:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 21:00:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:42,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:42,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:42,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:42,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:42,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:00:42,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:42,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:42,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 21:00:42,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171679439] [2020-10-12 21:00:42,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:42,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:42,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908813175] [2020-10-12 21:00:42,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:42,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:42,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:42,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:42,720 INFO L87 Difference]: Start difference. First operand 1358 states and 2255 transitions. Second operand 5 states. [2020-10-12 21:00:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:43,427 INFO L93 Difference]: Finished difference Result 2745 states and 4552 transitions. [2020-10-12 21:00:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:43,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 21:00:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:43,432 INFO L225 Difference]: With dead ends: 2745 [2020-10-12 21:00:43,432 INFO L226 Difference]: Without dead ends: 1412 [2020-10-12 21:00:43,434 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 21:00:43,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2020-10-12 21:00:43,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1358. [2020-10-12 21:00:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2020-10-12 21:00:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2251 transitions. [2020-10-12 21:00:43,464 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2251 transitions. Word has length 110 [2020-10-12 21:00:43,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:43,464 INFO L479 AbstractCegarLoop]: Abstraction has 1358 states and 2251 transitions. [2020-10-12 21:00:43,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2251 transitions. [2020-10-12 21:00:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 21:00:43,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:43,467 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:43,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 21:00:43,467 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:43,468 INFO L82 PathProgramCache]: Analyzing trace with hash -697000305, now seen corresponding path program 1 times [2020-10-12 21:00:43,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:43,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354942142] [2020-10-12 21:00:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:43,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:43,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:44,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:44,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:46,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:46,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 21:00:46,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2771 [2020-10-12 21:00:46,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 21:00:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:00:46,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:46,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:46,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:46,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:46,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:00:46,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 21:00:46,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354942142] [2020-10-12 21:00:46,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:46,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:46,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086659927] [2020-10-12 21:00:46,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:46,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:46,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:46,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:46,313 INFO L87 Difference]: Start difference. First operand 1358 states and 2251 transitions. Second operand 5 states. [2020-10-12 21:00:46,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:46,987 INFO L93 Difference]: Finished difference Result 2739 states and 4538 transitions. [2020-10-12 21:00:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:46,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 21:00:46,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:46,994 INFO L225 Difference]: With dead ends: 2739 [2020-10-12 21:00:46,994 INFO L226 Difference]: Without dead ends: 1406 [2020-10-12 21:00:46,996 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 21:00:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2020-10-12 21:00:47,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1358. [2020-10-12 21:00:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2020-10-12 21:00:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2247 transitions. [2020-10-12 21:00:47,031 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2247 transitions. Word has length 111 [2020-10-12 21:00:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:47,031 INFO L479 AbstractCegarLoop]: Abstraction has 1358 states and 2247 transitions. [2020-10-12 21:00:47,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:47,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2247 transitions. [2020-10-12 21:00:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 21:00:47,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:47,034 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:47,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 21:00:47,034 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:47,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1117130585, now seen corresponding path program 1 times [2020-10-12 21:00:47,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:47,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598707194] [2020-10-12 21:00:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:47,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:47,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:48,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:48,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 21:00:48,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:48,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-12 21:00:48,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 21:00:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:48,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:48,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:48,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:48,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:48,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:00:48,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:48,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:48,475 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 21:00:48,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598707194] [2020-10-12 21:00:48,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:48,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:48,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800994659] [2020-10-12 21:00:48,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:48,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:48,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:48,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:48,476 INFO L87 Difference]: Start difference. First operand 1358 states and 2247 transitions. Second operand 5 states. [2020-10-12 21:00:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:49,416 INFO L93 Difference]: Finished difference Result 3064 states and 5057 transitions. [2020-10-12 21:00:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:49,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-12 21:00:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:49,423 INFO L225 Difference]: With dead ends: 3064 [2020-10-12 21:00:49,423 INFO L226 Difference]: Without dead ends: 1731 [2020-10-12 21:00:49,426 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 21:00:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2020-10-12 21:00:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1474. [2020-10-12 21:00:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-10-12 21:00:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2447 transitions. [2020-10-12 21:00:49,473 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2447 transitions. Word has length 115 [2020-10-12 21:00:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:49,473 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 2447 transitions. [2020-10-12 21:00:49,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2447 transitions. [2020-10-12 21:00:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 21:00:49,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:49,477 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:49,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 21:00:49,477 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:49,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:49,477 INFO L82 PathProgramCache]: Analyzing trace with hash -121276932, now seen corresponding path program 1 times [2020-10-12 21:00:49,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:49,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016170589] [2020-10-12 21:00:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:49,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:50,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 21:00:50,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1131 [2020-10-12 21:00:50,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 21:00:50,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:50,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:50,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:50,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:50,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:50,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:50,708 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 21:00:50,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016170589] [2020-10-12 21:00:50,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:50,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:50,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378673889] [2020-10-12 21:00:50,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:50,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:50,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:50,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:50,710 INFO L87 Difference]: Start difference. First operand 1474 states and 2447 transitions. Second operand 5 states. [2020-10-12 21:00:51,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:51,650 INFO L93 Difference]: Finished difference Result 3149 states and 5202 transitions. [2020-10-12 21:00:51,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:51,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 21:00:51,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:51,655 INFO L225 Difference]: With dead ends: 3149 [2020-10-12 21:00:51,655 INFO L226 Difference]: Without dead ends: 1700 [2020-10-12 21:00:51,658 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 21:00:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2020-10-12 21:00:51,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1478. [2020-10-12 21:00:51,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-10-12 21:00:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2451 transitions. [2020-10-12 21:00:51,692 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2451 transitions. Word has length 116 [2020-10-12 21:00:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:51,692 INFO L479 AbstractCegarLoop]: Abstraction has 1478 states and 2451 transitions. [2020-10-12 21:00:51,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:51,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2451 transitions. [2020-10-12 21:00:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 21:00:51,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:51,695 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, 1, 1, 1] [2020-10-12 21:00:51,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 21:00:51,696 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:51,696 INFO L82 PathProgramCache]: Analyzing trace with hash 2065098484, now seen corresponding path program 1 times [2020-10-12 21:00:51,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:51,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552429003] [2020-10-12 21:00:51,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:51,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:51,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:51,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:53,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:53,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 21:00:53,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-10-12 21:00:53,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 21:00:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:53,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:53,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:53,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:53,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:53,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:53,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:00:53,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:53,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:53,269 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 21:00:53,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552429003] [2020-10-12 21:00:53,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:53,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:53,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984512183] [2020-10-12 21:00:53,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:53,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:53,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:53,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:53,271 INFO L87 Difference]: Start difference. First operand 1478 states and 2451 transitions. Second operand 5 states. [2020-10-12 21:00:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:54,186 INFO L93 Difference]: Finished difference Result 3153 states and 5202 transitions. [2020-10-12 21:00:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:54,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-12 21:00:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:54,191 INFO L225 Difference]: With dead ends: 3153 [2020-10-12 21:00:54,191 INFO L226 Difference]: Without dead ends: 1700 [2020-10-12 21:00:54,194 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 21:00:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2020-10-12 21:00:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1478. [2020-10-12 21:00:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-10-12 21:00:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2447 transitions. [2020-10-12 21:00:54,234 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2447 transitions. Word has length 118 [2020-10-12 21:00:54,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:54,234 INFO L479 AbstractCegarLoop]: Abstraction has 1478 states and 2447 transitions. [2020-10-12 21:00:54,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2447 transitions. [2020-10-12 21:00:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 21:00:54,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:54,236 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, 1, 1] [2020-10-12 21:00:54,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 21:00:54,237 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:54,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1862379537, now seen corresponding path program 1 times [2020-10-12 21:00:54,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:54,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247638988] [2020-10-12 21:00:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:54,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:54,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 21:00:54,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:00:54,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-12 21:00:54,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 21:00:54,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:54,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:54,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:54,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:54,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:54,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:54,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:54,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:54,667 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 21:00:54,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247638988] [2020-10-12 21:00:54,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:54,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:54,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38951445] [2020-10-12 21:00:54,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:54,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:54,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:54,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:54,669 INFO L87 Difference]: Start difference. First operand 1478 states and 2447 transitions. Second operand 5 states. [2020-10-12 21:00:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:55,580 INFO L93 Difference]: Finished difference Result 3141 states and 5178 transitions. [2020-10-12 21:00:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:55,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-12 21:00:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:55,584 INFO L225 Difference]: With dead ends: 3141 [2020-10-12 21:00:55,584 INFO L226 Difference]: Without dead ends: 1688 [2020-10-12 21:00:55,586 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 21:00:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-10-12 21:00:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1490. [2020-10-12 21:00:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2020-10-12 21:00:55,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2467 transitions. [2020-10-12 21:00:55,619 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2467 transitions. Word has length 118 [2020-10-12 21:00:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:55,619 INFO L479 AbstractCegarLoop]: Abstraction has 1490 states and 2467 transitions. [2020-10-12 21:00:55,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:55,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2467 transitions. [2020-10-12 21:00:55,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 21:00:55,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:55,621 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, 1, 1, 1] [2020-10-12 21:00:55,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 21:00:55,621 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:55,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1910506273, now seen corresponding path program 1 times [2020-10-12 21:00:55,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:55,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162818492] [2020-10-12 21:00:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:55,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:57,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:57,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 21:00:57,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:57,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-10-12 21:00:57,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:00:57,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:57,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:57,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:57,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:57,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:57,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:57,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:57,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:57,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:57,252 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 21:00:57,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162818492] [2020-10-12 21:00:57,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:57,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:57,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873776427] [2020-10-12 21:00:57,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:57,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:57,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:57,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:57,253 INFO L87 Difference]: Start difference. First operand 1490 states and 2467 transitions. Second operand 5 states. [2020-10-12 21:00:58,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:58,140 INFO L93 Difference]: Finished difference Result 3145 states and 5182 transitions. [2020-10-12 21:00:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:58,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 21:00:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:58,145 INFO L225 Difference]: With dead ends: 3145 [2020-10-12 21:00:58,145 INFO L226 Difference]: Without dead ends: 1680 [2020-10-12 21:00:58,148 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 21:00:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-10-12 21:00:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1490. [2020-10-12 21:00:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2020-10-12 21:00:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2463 transitions. [2020-10-12 21:00:58,198 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2463 transitions. Word has length 119 [2020-10-12 21:00:58,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:58,198 INFO L479 AbstractCegarLoop]: Abstraction has 1490 states and 2463 transitions. [2020-10-12 21:00:58,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:58,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2463 transitions. [2020-10-12 21:00:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 21:00:58,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:58,202 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, 1, 1] [2020-10-12 21:00:58,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 21:00:58,203 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:58,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:58,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1348874590, now seen corresponding path program 1 times [2020-10-12 21:00:58,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:58,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4064896] [2020-10-12 21:00:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:58,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:58,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:59,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:59,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 21:00:59,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1386 [2020-10-12 21:00:59,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 21:00:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:59,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:59,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:59,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:00:59,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:59,689 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 21:00:59,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4064896] [2020-10-12 21:00:59,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:59,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:59,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945522212] [2020-10-12 21:00:59,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:59,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:59,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:59,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:59,690 INFO L87 Difference]: Start difference. First operand 1490 states and 2463 transitions. Second operand 5 states. [2020-10-12 21:01:00,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:00,553 INFO L93 Difference]: Finished difference Result 3145 states and 5174 transitions. [2020-10-12 21:01:00,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:00,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 21:01:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:00,559 INFO L225 Difference]: With dead ends: 3145 [2020-10-12 21:01:00,559 INFO L226 Difference]: Without dead ends: 1680 [2020-10-12 21:01:00,561 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 21:01:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-10-12 21:01:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1494. [2020-10-12 21:01:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-10-12 21:01:00,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2467 transitions. [2020-10-12 21:01:00,607 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2467 transitions. Word has length 121 [2020-10-12 21:01:00,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:00,607 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 2467 transitions. [2020-10-12 21:01:00,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2467 transitions. [2020-10-12 21:01:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 21:01:00,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:00,610 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:00,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 21:01:00,610 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:00,611 INFO L82 PathProgramCache]: Analyzing trace with hash -254083992, now seen corresponding path program 1 times [2020-10-12 21:01:00,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:00,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230661958] [2020-10-12 21:01:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:00,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:00,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:01,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:05,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:05,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 21:01:05,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:05,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 21:01:05,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 21:01:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:01:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:05,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:05,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:05,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:05,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:05,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:05,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:05,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:05,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:05,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 21:01:05,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230661958] [2020-10-12 21:01:05,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:05,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:05,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297739295] [2020-10-12 21:01:05,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:05,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:05,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:05,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:05,711 INFO L87 Difference]: Start difference. First operand 1494 states and 2467 transitions. Second operand 5 states. [2020-10-12 21:01:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:06,777 INFO L93 Difference]: Finished difference Result 3200 states and 5253 transitions. [2020-10-12 21:01:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:06,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 21:01:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:06,782 INFO L225 Difference]: With dead ends: 3200 [2020-10-12 21:01:06,782 INFO L226 Difference]: Without dead ends: 1731 [2020-10-12 21:01:06,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:06,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2020-10-12 21:01:06,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1494. [2020-10-12 21:01:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-10-12 21:01:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2463 transitions. [2020-10-12 21:01:06,834 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2463 transitions. Word has length 122 [2020-10-12 21:01:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:06,835 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 2463 transitions. [2020-10-12 21:01:06,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2463 transitions. [2020-10-12 21:01:06,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 21:01:06,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:06,838 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, 1, 1] [2020-10-12 21:01:06,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 21:01:06,838 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:06,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:06,839 INFO L82 PathProgramCache]: Analyzing trace with hash -549411747, now seen corresponding path program 1 times [2020-10-12 21:01:06,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:06,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617292636] [2020-10-12 21:01:06,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:06,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:07,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:07,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:08,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:08,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 21:01:08,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-10-12 21:01:08,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:01:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 21:01:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:08,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:08,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:08,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:08,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:08,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:08,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:08,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:08,113 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 21:01:08,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617292636] [2020-10-12 21:01:08,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:08,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:08,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102781456] [2020-10-12 21:01:08,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:08,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:08,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:08,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:08,114 INFO L87 Difference]: Start difference. First operand 1494 states and 2463 transitions. Second operand 5 states. [2020-10-12 21:01:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:08,996 INFO L93 Difference]: Finished difference Result 3149 states and 5166 transitions. [2020-10-12 21:01:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:08,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 21:01:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:08,999 INFO L225 Difference]: With dead ends: 3149 [2020-10-12 21:01:08,999 INFO L226 Difference]: Without dead ends: 1680 [2020-10-12 21:01:09,002 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 21:01:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-10-12 21:01:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1502. [2020-10-12 21:01:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1502 states. [2020-10-12 21:01:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2475 transitions. [2020-10-12 21:01:09,050 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2475 transitions. Word has length 122 [2020-10-12 21:01:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:09,051 INFO L479 AbstractCegarLoop]: Abstraction has 1502 states and 2475 transitions. [2020-10-12 21:01:09,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2475 transitions. [2020-10-12 21:01:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 21:01:09,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:09,055 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, 1, 1] [2020-10-12 21:01:09,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 21:01:09,056 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1757602248, now seen corresponding path program 1 times [2020-10-12 21:01:09,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:09,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554598170] [2020-10-12 21:01:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:09,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:09,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:09,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:10,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:10,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 21:01:10,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1572 [2020-10-12 21:01:10,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:01:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:01:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:10,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:10,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:10,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:10,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:01:10,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:10,735 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 21:01:10,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554598170] [2020-10-12 21:01:10,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:10,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:10,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588223225] [2020-10-12 21:01:10,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:10,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:10,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:10,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:10,736 INFO L87 Difference]: Start difference. First operand 1502 states and 2475 transitions. Second operand 5 states. [2020-10-12 21:01:11,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:11,623 INFO L93 Difference]: Finished difference Result 3133 states and 5138 transitions. [2020-10-12 21:01:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:11,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 21:01:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:11,626 INFO L225 Difference]: With dead ends: 3133 [2020-10-12 21:01:11,626 INFO L226 Difference]: Without dead ends: 1656 [2020-10-12 21:01:11,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2020-10-12 21:01:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1502. [2020-10-12 21:01:11,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1502 states. [2020-10-12 21:01:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2471 transitions. [2020-10-12 21:01:11,678 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2471 transitions. Word has length 122 [2020-10-12 21:01:11,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:11,679 INFO L479 AbstractCegarLoop]: Abstraction has 1502 states and 2471 transitions. [2020-10-12 21:01:11,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:11,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2471 transitions. [2020-10-12 21:01:11,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 21:01:11,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:11,682 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 21:01:11,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 21:01:11,682 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:11,683 INFO L82 PathProgramCache]: Analyzing trace with hash 863363675, now seen corresponding path program 1 times [2020-10-12 21:01:11,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:11,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92798948] [2020-10-12 21:01:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:16,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:16,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 21:01:16,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:16,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 21:01:16,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 21:01:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 21:01:16,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:16,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:16,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:16,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:16,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:01:16,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 21:01:16,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92798948] [2020-10-12 21:01:16,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:16,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:16,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185564211] [2020-10-12 21:01:16,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:16,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:16,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:16,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:16,814 INFO L87 Difference]: Start difference. First operand 1502 states and 2471 transitions. Second operand 5 states. [2020-10-12 21:01:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:17,486 INFO L93 Difference]: Finished difference Result 2338 states and 3823 transitions. [2020-10-12 21:01:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:17,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 21:01:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:17,488 INFO L225 Difference]: With dead ends: 2338 [2020-10-12 21:01:17,488 INFO L226 Difference]: Without dead ends: 1550 [2020-10-12 21:01:17,489 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 21:01:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2020-10-12 21:01:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1502. [2020-10-12 21:01:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1502 states. [2020-10-12 21:01:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2467 transitions. [2020-10-12 21:01:17,520 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2467 transitions. Word has length 123 [2020-10-12 21:01:17,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:17,521 INFO L479 AbstractCegarLoop]: Abstraction has 1502 states and 2467 transitions. [2020-10-12 21:01:17,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:17,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2467 transitions. [2020-10-12 21:01:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 21:01:17,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:17,523 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, 1, 1] [2020-10-12 21:01:17,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 21:01:17,523 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:17,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:17,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1191783971, now seen corresponding path program 1 times [2020-10-12 21:01:17,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:17,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880223735] [2020-10-12 21:01:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:17,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:18,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:18,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 21:01:18,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:18,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1160 [2020-10-12 21:01:18,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:01:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 21:01:18,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:18,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:18,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:18,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:18,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:18,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:18,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:01:18,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:18,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:18,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:18,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:18,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:18,780 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 21:01:18,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880223735] [2020-10-12 21:01:18,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:18,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:18,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864744081] [2020-10-12 21:01:18,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:18,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:18,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:18,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:18,781 INFO L87 Difference]: Start difference. First operand 1502 states and 2467 transitions. Second operand 5 states. [2020-10-12 21:01:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:19,688 INFO L93 Difference]: Finished difference Result 3121 states and 5106 transitions. [2020-10-12 21:01:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:19,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 21:01:19,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:19,690 INFO L225 Difference]: With dead ends: 3121 [2020-10-12 21:01:19,690 INFO L226 Difference]: Without dead ends: 1644 [2020-10-12 21:01:19,692 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 21:01:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2020-10-12 21:01:19,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1506. [2020-10-12 21:01:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1506 states. [2020-10-12 21:01:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2471 transitions. [2020-10-12 21:01:19,724 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2471 transitions. Word has length 123 [2020-10-12 21:01:19,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:19,725 INFO L479 AbstractCegarLoop]: Abstraction has 1506 states and 2471 transitions. [2020-10-12 21:01:19,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:19,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2471 transitions. [2020-10-12 21:01:19,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 21:01:19,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:19,727 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 21:01:19,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 21:01:19,727 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:19,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:19,727 INFO L82 PathProgramCache]: Analyzing trace with hash -437775776, now seen corresponding path program 1 times [2020-10-12 21:01:19,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:19,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848396725] [2020-10-12 21:01:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:19,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:24,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:24,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 21:01:24,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 21:01:24,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 21:01:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 21:01:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:24,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:24,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:24,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:24,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:01:24,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-12 21:01:24,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848396725] [2020-10-12 21:01:24,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:24,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:24,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792847549] [2020-10-12 21:01:24,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:24,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:24,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:24,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:24,844 INFO L87 Difference]: Start difference. First operand 1506 states and 2471 transitions. Second operand 5 states. [2020-10-12 21:01:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:25,684 INFO L93 Difference]: Finished difference Result 4447 states and 7301 transitions. [2020-10-12 21:01:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:25,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 21:01:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:25,690 INFO L225 Difference]: With dead ends: 4447 [2020-10-12 21:01:25,691 INFO L226 Difference]: Without dead ends: 2966 [2020-10-12 21:01:25,694 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 21:01:25,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-10-12 21:01:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2964. [2020-10-12 21:01:25,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2964 states. [2020-10-12 21:01:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 4814 transitions. [2020-10-12 21:01:25,814 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 4814 transitions. Word has length 124 [2020-10-12 21:01:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:25,814 INFO L479 AbstractCegarLoop]: Abstraction has 2964 states and 4814 transitions. [2020-10-12 21:01:25,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 4814 transitions. [2020-10-12 21:01:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 21:01:25,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:25,819 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 21:01:25,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 21:01:25,820 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:25,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:25,820 INFO L82 PathProgramCache]: Analyzing trace with hash 556917922, now seen corresponding path program 1 times [2020-10-12 21:01:25,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:25,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902916462] [2020-10-12 21:01:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:29,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:30,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 21:01:30,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:01:30,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 21:01:30,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 21:01:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 21:01:30,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:30,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:30,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:30,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:30,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:30,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:30,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-12 21:01:30,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902916462] [2020-10-12 21:01:30,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:30,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:30,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703597475] [2020-10-12 21:01:30,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:30,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:30,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:30,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:30,912 INFO L87 Difference]: Start difference. First operand 2964 states and 4814 transitions. Second operand 5 states. [2020-10-12 21:01:32,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:32,016 INFO L93 Difference]: Finished difference Result 6625 states and 10754 transitions. [2020-10-12 21:01:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:32,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 21:01:32,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:32,021 INFO L225 Difference]: With dead ends: 6625 [2020-10-12 21:01:32,022 INFO L226 Difference]: Without dead ends: 3702 [2020-10-12 21:01:32,025 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 21:01:32,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2020-10-12 21:01:32,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3184. [2020-10-12 21:01:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-12 21:01:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 5202 transitions. [2020-10-12 21:01:32,089 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 5202 transitions. Word has length 124 [2020-10-12 21:01:32,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:32,089 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 5202 transitions. [2020-10-12 21:01:32,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 5202 transitions. [2020-10-12 21:01:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 21:01:32,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:32,095 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, 1, 1] [2020-10-12 21:01:32,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 21:01:32,095 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:32,096 INFO L82 PathProgramCache]: Analyzing trace with hash -813142683, now seen corresponding path program 1 times [2020-10-12 21:01:32,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:32,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789680182] [2020-10-12 21:01:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:32,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:32,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:32,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:32,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 21:01:32,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:01:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-12 21:01:32,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:01:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 21:01:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:32,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:32,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:32,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:32,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:32,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:32,586 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 21:01:32,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789680182] [2020-10-12 21:01:32,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:32,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:32,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270212178] [2020-10-12 21:01:32,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:32,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:32,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:32,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:32,588 INFO L87 Difference]: Start difference. First operand 3184 states and 5202 transitions. Second operand 5 states. [2020-10-12 21:01:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:33,589 INFO L93 Difference]: Finished difference Result 6603 states and 10740 transitions. [2020-10-12 21:01:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:33,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 21:01:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:33,593 INFO L225 Difference]: With dead ends: 6603 [2020-10-12 21:01:33,594 INFO L226 Difference]: Without dead ends: 3460 [2020-10-12 21:01:33,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2020-10-12 21:01:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3192. [2020-10-12 21:01:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3192 states. [2020-10-12 21:01:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 5210 transitions. [2020-10-12 21:01:33,668 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 5210 transitions. Word has length 124 [2020-10-12 21:01:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:33,669 INFO L479 AbstractCegarLoop]: Abstraction has 3192 states and 5210 transitions. [2020-10-12 21:01:33,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 5210 transitions. [2020-10-12 21:01:33,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 21:01:33,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:33,674 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, 1, 1] [2020-10-12 21:01:33,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 21:01:33,674 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:33,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:33,675 INFO L82 PathProgramCache]: Analyzing trace with hash 616545221, now seen corresponding path program 1 times [2020-10-12 21:01:33,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:33,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086195184] [2020-10-12 21:01:33,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:33,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:36,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:38,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:38,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 21:01:38,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 21:01:38,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 21:01:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 21:01:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:39,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:39,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:39,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:39,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:39,249 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 21:01:39,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086195184] [2020-10-12 21:01:39,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:39,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 21:01:39,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316972214] [2020-10-12 21:01:39,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:01:39,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:39,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:01:39,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:01:39,251 INFO L87 Difference]: Start difference. First operand 3192 states and 5210 transitions. Second operand 10 states. [2020-10-12 21:01:42,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:42,139 INFO L93 Difference]: Finished difference Result 5776 states and 9378 transitions. [2020-10-12 21:01:42,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:01:42,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2020-10-12 21:01:42,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:42,145 INFO L225 Difference]: With dead ends: 5776 [2020-10-12 21:01:42,146 INFO L226 Difference]: Without dead ends: 4103 [2020-10-12 21:01:42,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:01:42,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2020-10-12 21:01:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4005. [2020-10-12 21:01:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-12 21:01:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6538 transitions. [2020-10-12 21:01:42,239 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6538 transitions. Word has length 125 [2020-10-12 21:01:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:42,239 INFO L479 AbstractCegarLoop]: Abstraction has 4005 states and 6538 transitions. [2020-10-12 21:01:42,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:01:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6538 transitions. [2020-10-12 21:01:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 21:01:42,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:42,244 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, 1, 1] [2020-10-12 21:01:42,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 21:01:42,245 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:42,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:42,245 INFO L82 PathProgramCache]: Analyzing trace with hash 991394059, now seen corresponding path program 1 times [2020-10-12 21:01:42,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:42,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880441638] [2020-10-12 21:01:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:42,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:42,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:42,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 21:01:42,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:01:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-12 21:01:42,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:01:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 21:01:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:42,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:42,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:42,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:42,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:01:42,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:42,901 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 21:01:42,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880441638] [2020-10-12 21:01:42,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:42,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:42,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527625540] [2020-10-12 21:01:42,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:42,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:42,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:42,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:42,904 INFO L87 Difference]: Start difference. First operand 4005 states and 6538 transitions. Second operand 5 states. [2020-10-12 21:01:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:43,917 INFO L93 Difference]: Finished difference Result 8261 states and 13427 transitions. [2020-10-12 21:01:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:43,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 21:01:43,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:43,922 INFO L225 Difference]: With dead ends: 8261 [2020-10-12 21:01:43,922 INFO L226 Difference]: Without dead ends: 4297 [2020-10-12 21:01:43,927 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 21:01:43,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2020-10-12 21:01:44,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3963. [2020-10-12 21:01:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3963 states. [2020-10-12 21:01:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3963 states to 3963 states and 6488 transitions. [2020-10-12 21:01:44,018 INFO L78 Accepts]: Start accepts. Automaton has 3963 states and 6488 transitions. Word has length 125 [2020-10-12 21:01:44,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:44,018 INFO L479 AbstractCegarLoop]: Abstraction has 3963 states and 6488 transitions. [2020-10-12 21:01:44,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3963 states and 6488 transitions. [2020-10-12 21:01:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 21:01:44,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:44,023 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, 1, 1] [2020-10-12 21:01:44,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 21:01:44,024 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:44,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2020161721, now seen corresponding path program 1 times [2020-10-12 21:01:44,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:44,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500721555] [2020-10-12 21:01:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:49,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:49,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 21:01:49,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:49,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:01:49,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 21:01:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 21:01:49,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:49,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:49,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:49,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:49,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:49,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:49,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:49,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 52 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 21:01:49,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500721555] [2020-10-12 21:01:49,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:49,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 21:01:49,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5763109] [2020-10-12 21:01:49,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 21:01:49,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:49,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 21:01:49,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:01:49,417 INFO L87 Difference]: Start difference. First operand 3963 states and 6488 transitions. Second operand 11 states. [2020-10-12 21:01:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:52,255 INFO L93 Difference]: Finished difference Result 9467 states and 15496 transitions. [2020-10-12 21:01:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 21:01:52,256 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 126 [2020-10-12 21:01:52,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:52,265 INFO L225 Difference]: With dead ends: 9467 [2020-10-12 21:01:52,265 INFO L226 Difference]: Without dead ends: 7001 [2020-10-12 21:01:52,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:01:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2020-10-12 21:01:52,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 2513. [2020-10-12 21:01:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2513 states. [2020-10-12 21:01:52,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 4066 transitions. [2020-10-12 21:01:52,358 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 4066 transitions. Word has length 126 [2020-10-12 21:01:52,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:52,358 INFO L479 AbstractCegarLoop]: Abstraction has 2513 states and 4066 transitions. [2020-10-12 21:01:52,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 21:01:52,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 4066 transitions. [2020-10-12 21:01:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 21:01:52,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:52,362 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, 1, 1] [2020-10-12 21:01:52,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 21:01:52,363 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:52,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1921717193, now seen corresponding path program 1 times [2020-10-12 21:01:52,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:52,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357009551] [2020-10-12 21:01:52,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:52,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:52,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:52,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:57,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:57,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 21:01:57,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:01:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 21:01:57,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 21:01:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 21:01:57,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:57,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:57,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:57,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:57,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:57,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:57,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:57,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 21:01:57,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357009551] [2020-10-12 21:01:57,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:57,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:57,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927771395] [2020-10-12 21:01:57,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:57,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:57,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:57,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:57,480 INFO L87 Difference]: Start difference. First operand 2513 states and 4066 transitions. Second operand 5 states. [2020-10-12 21:01:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:58,175 INFO L93 Difference]: Finished difference Result 5089 states and 8217 transitions. [2020-10-12 21:01:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:58,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-12 21:01:58,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:58,179 INFO L225 Difference]: With dead ends: 5089 [2020-10-12 21:01:58,179 INFO L226 Difference]: Without dead ends: 2615 [2020-10-12 21:01:58,182 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 21:01:58,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2020-10-12 21:01:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2513. [2020-10-12 21:01:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2513 states. [2020-10-12 21:01:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 4060 transitions. [2020-10-12 21:01:58,248 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 4060 transitions. Word has length 126 [2020-10-12 21:01:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:58,248 INFO L479 AbstractCegarLoop]: Abstraction has 2513 states and 4060 transitions. [2020-10-12 21:01:58,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 4060 transitions. [2020-10-12 21:01:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 21:01:58,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:58,252 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 1, 1] [2020-10-12 21:01:58,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 21:01:58,252 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:58,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:58,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1684928127, now seen corresponding path program 1 times [2020-10-12 21:01:58,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:58,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594523114] [2020-10-12 21:01:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:58,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:58,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:01,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:01,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:03,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:03,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 21:02:03,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:02:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 21:02:03,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:02:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 21:02:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:02:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:03,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:03,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:03,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:03,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:02:03,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 21:02:03,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594523114] [2020-10-12 21:02:03,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:02:03,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:02:03,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233593516] [2020-10-12 21:02:03,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:02:03,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:03,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:02:03,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:02:03,352 INFO L87 Difference]: Start difference. First operand 2513 states and 4060 transitions. Second operand 5 states. [2020-10-12 21:02:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:04,123 INFO L93 Difference]: Finished difference Result 5089 states and 8205 transitions. [2020-10-12 21:02:04,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:02:04,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-12 21:02:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:04,127 INFO L225 Difference]: With dead ends: 5089 [2020-10-12 21:02:04,127 INFO L226 Difference]: Without dead ends: 2615 [2020-10-12 21:02:04,131 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 21:02:04,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2020-10-12 21:02:04,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2513. [2020-10-12 21:02:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2513 states. [2020-10-12 21:02:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 4054 transitions. [2020-10-12 21:02:04,208 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 4054 transitions. Word has length 127 [2020-10-12 21:02:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:04,208 INFO L479 AbstractCegarLoop]: Abstraction has 2513 states and 4054 transitions. [2020-10-12 21:02:04,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:02:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 4054 transitions. [2020-10-12 21:02:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 21:02:04,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:04,211 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 1, 1] [2020-10-12 21:02:04,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 21:02:04,212 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:04,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1431816348, now seen corresponding path program 1 times [2020-10-12 21:02:04,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:04,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453903119] [2020-10-12 21:02:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:04,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:07,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:07,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:09,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 21:02:09,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:02:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 21:02:09,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:02:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-12 21:02:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 21:02:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:09,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:09,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:09,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:02:09,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 21:02:09,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453903119] [2020-10-12 21:02:09,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:02:09,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:02:09,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201027274] [2020-10-12 21:02:09,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:02:09,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:09,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:02:09,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:02:09,306 INFO L87 Difference]: Start difference. First operand 2513 states and 4054 transitions. Second operand 5 states. [2020-10-12 21:02:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:10,494 INFO L93 Difference]: Finished difference Result 5333 states and 8551 transitions. [2020-10-12 21:02:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:02:10,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 21:02:10,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:10,498 INFO L225 Difference]: With dead ends: 5333 [2020-10-12 21:02:10,499 INFO L226 Difference]: Without dead ends: 2859 [2020-10-12 21:02:10,502 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 21:02:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-10-12 21:02:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2282. [2020-10-12 21:02:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2020-10-12 21:02:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 3637 transitions. [2020-10-12 21:02:10,575 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 3637 transitions. Word has length 128 [2020-10-12 21:02:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:10,576 INFO L479 AbstractCegarLoop]: Abstraction has 2282 states and 3637 transitions. [2020-10-12 21:02:10,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:02:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 3637 transitions. [2020-10-12 21:02:10,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 21:02:10,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:10,579 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 21:02:10,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 21:02:10,579 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:10,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:10,579 INFO L82 PathProgramCache]: Analyzing trace with hash -2010720080, now seen corresponding path program 1 times [2020-10-12 21:02:10,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:10,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495283476] [2020-10-12 21:02:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:10,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:12,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:12,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 21:02:12,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:02:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2033 [2020-10-12 21:02:12,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:02:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-12 21:02:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 21:02:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:12,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:12,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:12,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:12,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:12,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:02:12,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:12,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 21:02:12,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495283476] [2020-10-12 21:02:12,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:02:12,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:02:12,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137352279] [2020-10-12 21:02:12,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:02:12,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:12,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:02:12,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:02:12,719 INFO L87 Difference]: Start difference. First operand 2282 states and 3637 transitions. Second operand 5 states. [2020-10-12 21:02:13,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:13,694 INFO L93 Difference]: Finished difference Result 4923 states and 7875 transitions. [2020-10-12 21:02:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:02:13,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 21:02:13,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:13,698 INFO L225 Difference]: With dead ends: 4923 [2020-10-12 21:02:13,698 INFO L226 Difference]: Without dead ends: 2680 [2020-10-12 21:02:13,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:02:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2020-10-12 21:02:13,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2292. [2020-10-12 21:02:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2020-10-12 21:02:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3613 transitions. [2020-10-12 21:02:13,765 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3613 transitions. Word has length 128 [2020-10-12 21:02:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:13,765 INFO L479 AbstractCegarLoop]: Abstraction has 2292 states and 3613 transitions. [2020-10-12 21:02:13,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:02:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3613 transitions. [2020-10-12 21:02:13,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 21:02:13,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:13,768 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:02:13,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 21:02:13,769 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:13,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:13,769 INFO L82 PathProgramCache]: Analyzing trace with hash 785573547, now seen corresponding path program 1 times [2020-10-12 21:02:13,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:13,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202694142] [2020-10-12 21:02:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:13,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:14,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:14,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 21:02:14,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:02:14,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-12 21:02:14,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:02:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 21:02:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 21:02:14,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:14,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:14,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:14,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:14,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:02:14,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:14,207 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 21:02:14,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202694142] [2020-10-12 21:02:14,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:02:14,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:02:14,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437367100] [2020-10-12 21:02:14,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:02:14,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:14,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:02:14,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:02:14,209 INFO L87 Difference]: Start difference. First operand 2292 states and 3613 transitions. Second operand 5 states.