/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.13.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:40:53,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:40:53,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:40:53,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:40:53,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:40:53,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:40:53,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:40:53,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:40:53,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:40:53,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:40:53,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:40:53,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:40:53,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:40:53,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:40:53,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:40:53,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:40:53,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:40:53,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:40:53,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:40:53,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:40:53,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:40:53,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:40:53,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:40:53,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:40:53,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:40:53,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:40:53,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:40:53,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:40:53,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:40:53,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:40:53,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:40:53,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:40:53,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:40:53,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:40:53,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:40:53,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:40:53,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:40:53,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:40:53,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:40:53,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:40:53,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:40:53,768 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 [2020-10-15 04:40:53,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:40:53,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:40:53,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:40:53,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:40:53,812 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:40:53,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:40:53,812 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:40:53,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:40:53,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:40:53,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:40:53,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:40:53,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:40:53,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:40:53,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:40:53,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:40:53,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:40:53,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:40:53,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:40:53,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:40:53,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:40:53,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:40:53,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:40:53,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:40:53,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:40:53,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:40:53,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:40:53,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:40:53,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:40:53,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:40:53,818 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:40:54,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:40:54,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:40:54,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:40:54,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:40:54,150 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:40:54,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.13.i.cil-2.c [2020-10-15 04:40:54,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d220a69c4/ef171237614c417aa5e9b792ae90f696/FLAG6d4aa5ca1 [2020-10-15 04:40:54,843 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:40:54,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.13.i.cil-2.c [2020-10-15 04:40:54,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d220a69c4/ef171237614c417aa5e9b792ae90f696/FLAG6d4aa5ca1 [2020-10-15 04:40:55,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d220a69c4/ef171237614c417aa5e9b792ae90f696 [2020-10-15 04:40:55,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:40:55,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:40:55,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:40:55,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:40:55,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:40:55,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:40:55" (1/1) ... [2020-10-15 04:40:55,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a312aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:55, skipping insertion in model container [2020-10-15 04:40:55,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:40:55" (1/1) ... [2020-10-15 04:40:55,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:40:55,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:40:55,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:40:55,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:40:56,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:40:56,093 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:40:56,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:56 WrapperNode [2020-10-15 04:40:56,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:40:56,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:40:56,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:40:56,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:40:56,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:56" (1/1) ... [2020-10-15 04:40:56,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:56" (1/1) ... [2020-10-15 04:40:56,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:56" (1/1) ... [2020-10-15 04:40:56,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:56" (1/1) ... [2020-10-15 04:40:56,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:56" (1/1) ... [2020-10-15 04:40:56,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:56" (1/1) ... [2020-10-15 04:40:56,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:56" (1/1) ... [2020-10-15 04:40:56,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:40:56,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:40:56,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:40:56,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:40:56,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:56" (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 [2020-10-15 04:40:56,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:40:56,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:40:56,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-15 04:40:56,321 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-15 04:40:56,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:40:56,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:40:56,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:40:56,323 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:40:56,323 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:40:56,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:40:56,324 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:40:56,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:40:56,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:40:56,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:40:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:40:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:40:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-15 04:40:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:40:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:40:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-15 04:40:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:40:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:40:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:40:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:40:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:40:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:40:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:40:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:40:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:40:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:40:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:40:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:40:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:40:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:40:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:40:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:40:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:40:57,036 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:40:57,744 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-15 04:40:57,744 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-15 04:40:57,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:40:57,767 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:40:57,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:40:57 BoogieIcfgContainer [2020-10-15 04:40:57,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:40:57,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:40:57,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:40:57,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:40:57,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:40:55" (1/3) ... [2020-10-15 04:40:57,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b391cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:40:57, skipping insertion in model container [2020-10-15 04:40:57,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:56" (2/3) ... [2020-10-15 04:40:57,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b391cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:40:57, skipping insertion in model container [2020-10-15 04:40:57,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:40:57" (3/3) ... [2020-10-15 04:40:57,780 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.13.i.cil-2.c [2020-10-15 04:40:57,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:40:57,798 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:40:57,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:40:57,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:40:57,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:40:57,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:40:57,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:40:57,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:40:57,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:40:57,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:40:57,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:40:57,859 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-15 04:40:57,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 04:40:57,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:57,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:57,870 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1765903298, now seen corresponding path program 1 times [2020-10-15 04:40:57,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:57,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600825596] [2020-10-15 04:40:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:58,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:59,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:59,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 04:40:59,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:40:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1504 [2020-10-15 04:40:59,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:59,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:40:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:40:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:40:59,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:40:59,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:59,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:59,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:59,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:59,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:40:59,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:59,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:40:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:40:59,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600825596] [2020-10-15 04:40:59,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:59,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:40:59,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42922547] [2020-10-15 04:40:59,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:40:59,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:59,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:40:59,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:59,801 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2020-10-15 04:41:00,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:00,749 INFO L93 Difference]: Finished difference Result 436 states and 738 transitions. [2020-10-15 04:41:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:00,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-15 04:41:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:00,766 INFO L225 Difference]: With dead ends: 436 [2020-10-15 04:41:00,767 INFO L226 Difference]: Without dead ends: 266 [2020-10-15 04:41:00,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-15 04:41:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-15 04:41:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 04:41:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 399 transitions. [2020-10-15 04:41:00,841 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 399 transitions. Word has length 41 [2020-10-15 04:41:00,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:00,842 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 399 transitions. [2020-10-15 04:41:00,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:00,842 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 399 transitions. [2020-10-15 04:41:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 04:41:00,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:00,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:00,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:41:00,847 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1238454678, now seen corresponding path program 1 times [2020-10-15 04:41:00,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:00,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138817701] [2020-10-15 04:41:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:02,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:02,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 04:41:02,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:41:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-10-15 04:41:02,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:02,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:41:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 04:41:02,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:02,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:02,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:02,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:41:02,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:02,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:02,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138817701] [2020-10-15 04:41:02,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:02,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:02,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636933005] [2020-10-15 04:41:02,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:02,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:02,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:02,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:02,172 INFO L87 Difference]: Start difference. First operand 266 states and 399 transitions. Second operand 4 states. [2020-10-15 04:41:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:02,792 INFO L93 Difference]: Finished difference Result 518 states and 790 transitions. [2020-10-15 04:41:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:02,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-15 04:41:02,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:02,798 INFO L225 Difference]: With dead ends: 518 [2020-10-15 04:41:02,799 INFO L226 Difference]: Without dead ends: 391 [2020-10-15 04:41:02,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:02,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-15 04:41:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-15 04:41:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-15 04:41:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 586 transitions. [2020-10-15 04:41:02,828 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 586 transitions. Word has length 58 [2020-10-15 04:41:02,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:02,829 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 586 transitions. [2020-10-15 04:41:02,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 586 transitions. [2020-10-15 04:41:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:41:02,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:02,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:02,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:41:02,836 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:02,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:02,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1101054784, now seen corresponding path program 1 times [2020-10-15 04:41:02,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:02,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936902794] [2020-10-15 04:41:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:02,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:03,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:03,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:03,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 04:41:03,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:03,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-15 04:41:03,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:03,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:41:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:41:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:03,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:03,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:03,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:41:03,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:03,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:41:03,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936902794] [2020-10-15 04:41:03,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:03,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:03,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995642097] [2020-10-15 04:41:03,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:03,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:03,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:03,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:03,742 INFO L87 Difference]: Start difference. First operand 391 states and 586 transitions. Second operand 4 states. [2020-10-15 04:41:04,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:04,250 INFO L93 Difference]: Finished difference Result 768 states and 1164 transitions. [2020-10-15 04:41:04,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:04,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-15 04:41:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:04,256 INFO L225 Difference]: With dead ends: 768 [2020-10-15 04:41:04,256 INFO L226 Difference]: Without dead ends: 516 [2020-10-15 04:41:04,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-15 04:41:04,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2020-10-15 04:41:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-15 04:41:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 775 transitions. [2020-10-15 04:41:04,295 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 775 transitions. Word has length 80 [2020-10-15 04:41:04,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:04,296 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 775 transitions. [2020-10-15 04:41:04,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 775 transitions. [2020-10-15 04:41:04,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 04:41:04,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:04,311 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:04,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:41:04,312 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:04,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:04,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1488005106, now seen corresponding path program 1 times [2020-10-15 04:41:04,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:04,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558196959] [2020-10-15 04:41:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:04,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:05,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:05,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:07,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:07,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 04:41:07,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:07,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3221 [2020-10-15 04:41:07,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:07,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:07,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:07,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 04:41:07,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:41:07,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:07,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:07,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:07,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:07,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:07,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:07,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:07,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:07,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:07,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:07,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 04:41:07,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558196959] [2020-10-15 04:41:07,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:07,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:07,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463138513] [2020-10-15 04:41:07,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:07,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:07,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:07,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:07,714 INFO L87 Difference]: Start difference. First operand 516 states and 775 transitions. Second operand 4 states. [2020-10-15 04:41:08,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:08,201 INFO L93 Difference]: Finished difference Result 1020 states and 1543 transitions. [2020-10-15 04:41:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:08,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-15 04:41:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:08,206 INFO L225 Difference]: With dead ends: 1020 [2020-10-15 04:41:08,206 INFO L226 Difference]: Without dead ends: 643 [2020-10-15 04:41:08,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-15 04:41:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2020-10-15 04:41:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-15 04:41:08,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 968 transitions. [2020-10-15 04:41:08,228 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 968 transitions. Word has length 104 [2020-10-15 04:41:08,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:08,229 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 968 transitions. [2020-10-15 04:41:08,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 968 transitions. [2020-10-15 04:41:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 04:41:08,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:08,232 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:08,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:41:08,233 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1455605068, now seen corresponding path program 1 times [2020-10-15 04:41:08,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:08,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067940834] [2020-10-15 04:41:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:08,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:08,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:11,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:11,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 04:41:11,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3301 [2020-10-15 04:41:11,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:11,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:11,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:11,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 04:41:11,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:41:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:41:11,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:11,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:11,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:11,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:11,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:11,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:11,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:11,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:11,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:11,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 04:41:11,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067940834] [2020-10-15 04:41:11,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:11,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:11,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920228638] [2020-10-15 04:41:11,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:11,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:11,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:11,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:11,736 INFO L87 Difference]: Start difference. First operand 641 states and 968 transitions. Second operand 4 states. [2020-10-15 04:41:12,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:12,821 INFO L93 Difference]: Finished difference Result 1270 states and 1927 transitions. [2020-10-15 04:41:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:12,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-15 04:41:12,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:12,828 INFO L225 Difference]: With dead ends: 1270 [2020-10-15 04:41:12,828 INFO L226 Difference]: Without dead ends: 768 [2020-10-15 04:41:12,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-15 04:41:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2020-10-15 04:41:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-15 04:41:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1147 transitions. [2020-10-15 04:41:12,858 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1147 transitions. Word has length 110 [2020-10-15 04:41:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:12,861 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1147 transitions. [2020-10-15 04:41:12,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:12,861 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1147 transitions. [2020-10-15 04:41:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 04:41:12,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:12,866 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:12,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:41:12,866 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:12,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:12,867 INFO L82 PathProgramCache]: Analyzing trace with hash 758633420, now seen corresponding path program 1 times [2020-10-15 04:41:12,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:12,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444575968] [2020-10-15 04:41:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:13,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:13,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-15 04:41:13,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-15 04:41:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:13,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-15 04:41:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:41:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:13,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:13,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:13,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:13,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:13,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:13,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:13,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:13,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 04:41:13,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444575968] [2020-10-15 04:41:13,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:13,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:13,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798295011] [2020-10-15 04:41:13,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:13,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:13,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:13,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:13,534 INFO L87 Difference]: Start difference. First operand 766 states and 1147 transitions. Second operand 4 states. [2020-10-15 04:41:14,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:14,143 INFO L93 Difference]: Finished difference Result 1518 states and 2284 transitions. [2020-10-15 04:41:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:14,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-15 04:41:14,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:14,150 INFO L225 Difference]: With dead ends: 1518 [2020-10-15 04:41:14,151 INFO L226 Difference]: Without dead ends: 891 [2020-10-15 04:41:14,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-15 04:41:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2020-10-15 04:41:14,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-15 04:41:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1337 transitions. [2020-10-15 04:41:14,185 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1337 transitions. Word has length 127 [2020-10-15 04:41:14,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:14,185 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1337 transitions. [2020-10-15 04:41:14,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1337 transitions. [2020-10-15 04:41:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 04:41:14,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:14,190 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:14,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:41:14,190 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:14,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:14,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1858251708, now seen corresponding path program 1 times [2020-10-15 04:41:14,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:14,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435685537] [2020-10-15 04:41:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:14,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:15,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:15,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-15 04:41:15,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:15,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 780 [2020-10-15 04:41:15,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:15,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-15 04:41:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:41:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:15,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:15,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:15,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:15,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:15,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:15,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:15,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:15,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-15 04:41:15,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435685537] [2020-10-15 04:41:15,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:15,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:15,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015075948] [2020-10-15 04:41:15,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:15,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:15,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:15,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:15,176 INFO L87 Difference]: Start difference. First operand 891 states and 1337 transitions. Second operand 4 states. [2020-10-15 04:41:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:15,724 INFO L93 Difference]: Finished difference Result 1020 states and 1527 transitions. [2020-10-15 04:41:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:15,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-15 04:41:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:15,730 INFO L225 Difference]: With dead ends: 1020 [2020-10-15 04:41:15,730 INFO L226 Difference]: Without dead ends: 1018 [2020-10-15 04:41:15,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-10-15 04:41:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2020-10-15 04:41:15,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-15 04:41:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1524 transitions. [2020-10-15 04:41:15,765 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1524 transitions. Word has length 133 [2020-10-15 04:41:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:15,765 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1524 transitions. [2020-10-15 04:41:15,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:15,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1524 transitions. [2020-10-15 04:41:15,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-15 04:41:15,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:15,769 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:15,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:41:15,770 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:15,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:15,770 INFO L82 PathProgramCache]: Analyzing trace with hash 128857992, now seen corresponding path program 1 times [2020-10-15 04:41:15,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:15,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600446456] [2020-10-15 04:41:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:15,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:20,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:20,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-15 04:41:20,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:20,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-15 04:41:20,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:20,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-15 04:41:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:41:20,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:20,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:20,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:20,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:20,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:20,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:20,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:20,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:20,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:20,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:20,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:20,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-15 04:41:21,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600446456] [2020-10-15 04:41:21,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:21,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:21,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147741236] [2020-10-15 04:41:21,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:21,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:21,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:21,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:21,036 INFO L87 Difference]: Start difference. First operand 1016 states and 1524 transitions. Second operand 5 states. [2020-10-15 04:41:22,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:22,743 INFO L93 Difference]: Finished difference Result 2844 states and 4290 transitions. [2020-10-15 04:41:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:22,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-15 04:41:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:22,754 INFO L225 Difference]: With dead ends: 2844 [2020-10-15 04:41:22,755 INFO L226 Difference]: Without dead ends: 1842 [2020-10-15 04:41:22,758 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 [2020-10-15 04:41:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2020-10-15 04:41:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1312. [2020-10-15 04:41:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2020-10-15 04:41:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 2068 transitions. [2020-10-15 04:41:22,820 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 2068 transitions. Word has length 169 [2020-10-15 04:41:22,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:22,820 INFO L479 AbstractCegarLoop]: Abstraction has 1312 states and 2068 transitions. [2020-10-15 04:41:22,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 2068 transitions. [2020-10-15 04:41:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-15 04:41:22,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:22,825 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:22,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:41:22,825 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:22,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:22,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1774386870, now seen corresponding path program 1 times [2020-10-15 04:41:22,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:22,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898227092] [2020-10-15 04:41:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:22,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:22,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:22,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:24,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:27,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:27,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-15 04:41:27,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:27,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:41:27,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:27,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-15 04:41:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:41:27,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:27,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:27,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:27,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:27,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:27,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:27,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:27,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:27,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-15 04:41:28,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898227092] [2020-10-15 04:41:28,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:28,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:28,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856185514] [2020-10-15 04:41:28,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:28,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:28,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:28,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:28,039 INFO L87 Difference]: Start difference. First operand 1312 states and 2068 transitions. Second operand 5 states. [2020-10-15 04:41:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:29,425 INFO L93 Difference]: Finished difference Result 3108 states and 4791 transitions. [2020-10-15 04:41:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:29,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-15 04:41:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:29,439 INFO L225 Difference]: With dead ends: 3108 [2020-10-15 04:41:29,440 INFO L226 Difference]: Without dead ends: 1810 [2020-10-15 04:41:29,444 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 [2020-10-15 04:41:29,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2020-10-15 04:41:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1320. [2020-10-15 04:41:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2020-10-15 04:41:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2076 transitions. [2020-10-15 04:41:29,514 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2076 transitions. Word has length 170 [2020-10-15 04:41:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:29,515 INFO L479 AbstractCegarLoop]: Abstraction has 1320 states and 2076 transitions. [2020-10-15 04:41:29,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2076 transitions. [2020-10-15 04:41:29,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-15 04:41:29,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:29,523 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:29,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:41:29,523 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:29,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:29,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1383375992, now seen corresponding path program 1 times [2020-10-15 04:41:29,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:29,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928898234] [2020-10-15 04:41:29,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:34,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:34,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-15 04:41:34,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:34,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4988 [2020-10-15 04:41:34,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:34,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:41:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:41:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-15 04:41:34,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:34,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:34,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:34,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:34,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:34,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:34,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:34,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 14 proven. 174 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:41:35,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928898234] [2020-10-15 04:41:35,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:41:35,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:41:35,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140050403] [2020-10-15 04:41:35,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:41:35,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:35,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:41:35,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:41:35,147 INFO L87 Difference]: Start difference. First operand 1320 states and 2076 transitions. Second operand 11 states. [2020-10-15 04:41:39,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:39,225 INFO L93 Difference]: Finished difference Result 6688 states and 10498 transitions. [2020-10-15 04:41:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:41:39,226 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-10-15 04:41:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:39,254 INFO L225 Difference]: With dead ends: 6688 [2020-10-15 04:41:39,254 INFO L226 Difference]: Without dead ends: 5382 [2020-10-15 04:41:39,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:41:39,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5382 states. [2020-10-15 04:41:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5382 to 4114. [2020-10-15 04:41:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4114 states. [2020-10-15 04:41:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 6710 transitions. [2020-10-15 04:41:39,445 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 6710 transitions. Word has length 170 [2020-10-15 04:41:39,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:39,445 INFO L479 AbstractCegarLoop]: Abstraction has 4114 states and 6710 transitions. [2020-10-15 04:41:39,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:41:39,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 6710 transitions. [2020-10-15 04:41:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-15 04:41:39,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:39,460 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:39,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:41:39,460 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:39,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:39,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2073794395, now seen corresponding path program 1 times [2020-10-15 04:41:39,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:39,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483311625] [2020-10-15 04:41:39,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:40,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:44,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-15 04:41:44,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:44,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-15 04:41:44,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:44,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:44,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:41:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 04:41:44,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:44,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:44,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:44,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:44,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:44,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-15 04:41:44,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483311625] [2020-10-15 04:41:44,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:44,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:44,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183316685] [2020-10-15 04:41:44,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:44,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:44,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:44,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:44,868 INFO L87 Difference]: Start difference. First operand 4114 states and 6710 transitions. Second operand 5 states. [2020-10-15 04:41:45,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:45,730 INFO L93 Difference]: Finished difference Result 12253 states and 19971 transitions. [2020-10-15 04:41:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:45,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-15 04:41:45,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:45,771 INFO L225 Difference]: With dead ends: 12253 [2020-10-15 04:41:45,771 INFO L226 Difference]: Without dead ends: 8153 [2020-10-15 04:41:45,780 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 [2020-10-15 04:41:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8153 states. [2020-10-15 04:41:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8153 to 8151. [2020-10-15 04:41:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8151 states. [2020-10-15 04:41:46,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8151 states to 8151 states and 13203 transitions. [2020-10-15 04:41:46,175 INFO L78 Accepts]: Start accepts. Automaton has 8151 states and 13203 transitions. Word has length 183 [2020-10-15 04:41:46,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:46,175 INFO L479 AbstractCegarLoop]: Abstraction has 8151 states and 13203 transitions. [2020-10-15 04:41:46,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:46,176 INFO L276 IsEmpty]: Start isEmpty. Operand 8151 states and 13203 transitions. [2020-10-15 04:41:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-15 04:41:46,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:46,200 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:46,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:41:46,200 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:46,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:46,201 INFO L82 PathProgramCache]: Analyzing trace with hash -162751837, now seen corresponding path program 1 times [2020-10-15 04:41:46,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:46,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822488399] [2020-10-15 04:41:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:46,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:46,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:51,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:51,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-15 04:41:51,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:51,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:41:51,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:51,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:41:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:41:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:51,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:51,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:51,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:51,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:51,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:51,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:51,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:51,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-15 04:41:51,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822488399] [2020-10-15 04:41:51,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:51,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:51,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002829163] [2020-10-15 04:41:51,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:51,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:51,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:51,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:51,386 INFO L87 Difference]: Start difference. First operand 8151 states and 13203 transitions. Second operand 5 states. [2020-10-15 04:41:52,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:52,678 INFO L93 Difference]: Finished difference Result 12891 states and 20653 transitions. [2020-10-15 04:41:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:52,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-15 04:41:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:52,712 INFO L225 Difference]: With dead ends: 12891 [2020-10-15 04:41:52,713 INFO L226 Difference]: Without dead ends: 9793 [2020-10-15 04:41:52,722 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 [2020-10-15 04:41:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2020-10-15 04:41:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 8735. [2020-10-15 04:41:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8735 states. [2020-10-15 04:41:53,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8735 states to 8735 states and 14267 transitions. [2020-10-15 04:41:53,042 INFO L78 Accepts]: Start accepts. Automaton has 8735 states and 14267 transitions. Word has length 183 [2020-10-15 04:41:53,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:53,042 INFO L479 AbstractCegarLoop]: Abstraction has 8735 states and 14267 transitions. [2020-10-15 04:41:53,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:53,043 INFO L276 IsEmpty]: Start isEmpty. Operand 8735 states and 14267 transitions. [2020-10-15 04:41:53,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-15 04:41:53,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:53,065 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:53,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:41:53,066 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:53,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1878796561, now seen corresponding path program 1 times [2020-10-15 04:41:53,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:53,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966319478] [2020-10-15 04:41:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:58,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:58,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-15 04:41:58,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-15 04:41:58,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:58,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:41:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:41:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:58,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:58,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:58,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:58,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:58,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:58,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:58,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:58,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-15 04:41:58,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966319478] [2020-10-15 04:41:58,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:58,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:58,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154861275] [2020-10-15 04:41:58,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:58,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:58,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:58,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:58,287 INFO L87 Difference]: Start difference. First operand 8735 states and 14267 transitions. Second operand 5 states. [2020-10-15 04:41:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:59,785 INFO L93 Difference]: Finished difference Result 21683 states and 34981 transitions. [2020-10-15 04:41:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:59,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-15 04:41:59,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:59,817 INFO L225 Difference]: With dead ends: 21683 [2020-10-15 04:41:59,818 INFO L226 Difference]: Without dead ends: 12967 [2020-10-15 04:41:59,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:41:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12967 states. [2020-10-15 04:42:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12967 to 9801. [2020-10-15 04:42:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9801 states. [2020-10-15 04:42:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9801 states to 9801 states and 16173 transitions. [2020-10-15 04:42:00,132 INFO L78 Accepts]: Start accepts. Automaton has 9801 states and 16173 transitions. Word has length 183 [2020-10-15 04:42:00,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:00,132 INFO L479 AbstractCegarLoop]: Abstraction has 9801 states and 16173 transitions. [2020-10-15 04:42:00,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 9801 states and 16173 transitions. [2020-10-15 04:42:00,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-15 04:42:00,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:00,155 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:00,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:42:00,156 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:00,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:00,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1078060493, now seen corresponding path program 1 times [2020-10-15 04:42:00,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:00,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146064877] [2020-10-15 04:42:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:05,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:05,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-15 04:42:05,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4854 [2020-10-15 04:42:05,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:05,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 04:42:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:05,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:05,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:05,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:05,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:05,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:05,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:05,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:05,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:05,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:05,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:05,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-15 04:42:05,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146064877] [2020-10-15 04:42:05,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:05,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:05,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617751455] [2020-10-15 04:42:05,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:05,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:05,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:05,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:05,133 INFO L87 Difference]: Start difference. First operand 9801 states and 16173 transitions. Second operand 5 states. [2020-10-15 04:42:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:06,407 INFO L93 Difference]: Finished difference Result 15141 states and 24687 transitions. [2020-10-15 04:42:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:06,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-15 04:42:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:06,434 INFO L225 Difference]: With dead ends: 15141 [2020-10-15 04:42:06,434 INFO L226 Difference]: Without dead ends: 11443 [2020-10-15 04:42:06,443 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 [2020-10-15 04:42:06,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11443 states. [2020-10-15 04:42:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11443 to 10097. [2020-10-15 04:42:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10097 states. [2020-10-15 04:42:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10097 states to 10097 states and 16661 transitions. [2020-10-15 04:42:06,692 INFO L78 Accepts]: Start accepts. Automaton has 10097 states and 16661 transitions. Word has length 184 [2020-10-15 04:42:06,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:06,692 INFO L479 AbstractCegarLoop]: Abstraction has 10097 states and 16661 transitions. [2020-10-15 04:42:06,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:06,693 INFO L276 IsEmpty]: Start isEmpty. Operand 10097 states and 16661 transitions. [2020-10-15 04:42:06,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-15 04:42:06,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:06,714 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:06,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:42:06,714 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:06,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:06,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1858450013, now seen corresponding path program 2 times [2020-10-15 04:42:06,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:06,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612070115] [2020-10-15 04:42:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:06,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:11,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:11,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-15 04:42:11,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:11,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 04:42:11,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:11,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 04:42:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 04:42:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:11,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:11,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:11,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:11,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:11,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:11,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-15 04:42:11,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612070115] [2020-10-15 04:42:11,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:11,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:11,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953678577] [2020-10-15 04:42:11,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:11,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:11,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:11,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:11,853 INFO L87 Difference]: Start difference. First operand 10097 states and 16661 transitions. Second operand 5 states. [2020-10-15 04:42:13,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:13,119 INFO L93 Difference]: Finished difference Result 15437 states and 25159 transitions. [2020-10-15 04:42:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:13,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-15 04:42:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:13,142 INFO L225 Difference]: With dead ends: 15437 [2020-10-15 04:42:13,142 INFO L226 Difference]: Without dead ends: 11443 [2020-10-15 04:42:13,153 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 [2020-10-15 04:42:13,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11443 states. [2020-10-15 04:42:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11443 to 10145. [2020-10-15 04:42:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10145 states. [2020-10-15 04:42:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10145 states to 10145 states and 16741 transitions. [2020-10-15 04:42:13,428 INFO L78 Accepts]: Start accepts. Automaton has 10145 states and 16741 transitions. Word has length 184 [2020-10-15 04:42:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:13,428 INFO L479 AbstractCegarLoop]: Abstraction has 10145 states and 16741 transitions. [2020-10-15 04:42:13,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:13,429 INFO L276 IsEmpty]: Start isEmpty. Operand 10145 states and 16741 transitions. [2020-10-15 04:42:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-15 04:42:13,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:13,454 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:13,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:42:13,455 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:13,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:13,455 INFO L82 PathProgramCache]: Analyzing trace with hash -144456349, now seen corresponding path program 3 times [2020-10-15 04:42:13,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:13,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543807715] [2020-10-15 04:42:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:13,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:13,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:18,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:18,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-15 04:42:18,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:18,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4814 [2020-10-15 04:42:18,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:18,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 04:42:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:42:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:18,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:18,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:18,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:18,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:18,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:18,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-15 04:42:18,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543807715] [2020-10-15 04:42:18,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:18,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:18,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757078579] [2020-10-15 04:42:18,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:18,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:18,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:18,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:18,406 INFO L87 Difference]: Start difference. First operand 10145 states and 16741 transitions. Second operand 5 states. [2020-10-15 04:42:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:19,586 INFO L93 Difference]: Finished difference Result 15485 states and 25223 transitions. [2020-10-15 04:42:19,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:19,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-15 04:42:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:19,610 INFO L225 Difference]: With dead ends: 15485 [2020-10-15 04:42:19,610 INFO L226 Difference]: Without dead ends: 11443 [2020-10-15 04:42:19,619 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 [2020-10-15 04:42:19,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11443 states. [2020-10-15 04:42:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11443 to 10449. [2020-10-15 04:42:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10449 states. [2020-10-15 04:42:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10449 states to 10449 states and 17317 transitions. [2020-10-15 04:42:19,878 INFO L78 Accepts]: Start accepts. Automaton has 10449 states and 17317 transitions. Word has length 184 [2020-10-15 04:42:19,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:19,879 INFO L479 AbstractCegarLoop]: Abstraction has 10449 states and 17317 transitions. [2020-10-15 04:42:19,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 10449 states and 17317 transitions. [2020-10-15 04:42:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-15 04:42:19,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:19,900 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:19,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:42:19,900 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:19,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:19,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1324416763, now seen corresponding path program 1 times [2020-10-15 04:42:19,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:19,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659215181] [2020-10-15 04:42:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:19,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:21,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:24,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:24,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-15 04:42:24,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-15 04:42:24,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:24,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:42:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:42:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:25,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:25,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:25,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:25,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:25,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:25,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-15 04:42:25,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659215181] [2020-10-15 04:42:25,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:25,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:25,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10979626] [2020-10-15 04:42:25,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:25,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:25,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:25,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:25,170 INFO L87 Difference]: Start difference. First operand 10449 states and 17317 transitions. Second operand 5 states. [2020-10-15 04:42:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:26,325 INFO L93 Difference]: Finished difference Result 15725 states and 25713 transitions. [2020-10-15 04:42:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:26,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-15 04:42:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:26,345 INFO L225 Difference]: With dead ends: 15725 [2020-10-15 04:42:26,345 INFO L226 Difference]: Without dead ends: 11379 [2020-10-15 04:42:26,354 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 [2020-10-15 04:42:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11379 states. [2020-10-15 04:42:26,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11379 to 10449. [2020-10-15 04:42:26,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10449 states. [2020-10-15 04:42:26,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10449 states to 10449 states and 17301 transitions. [2020-10-15 04:42:26,615 INFO L78 Accepts]: Start accepts. Automaton has 10449 states and 17301 transitions. Word has length 184 [2020-10-15 04:42:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:26,615 INFO L479 AbstractCegarLoop]: Abstraction has 10449 states and 17301 transitions. [2020-10-15 04:42:26,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:26,615 INFO L276 IsEmpty]: Start isEmpty. Operand 10449 states and 17301 transitions. [2020-10-15 04:42:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-15 04:42:26,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:26,628 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:26,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:42:26,629 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:26,629 INFO L82 PathProgramCache]: Analyzing trace with hash -177955790, now seen corresponding path program 1 times [2020-10-15 04:42:26,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:26,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860967654] [2020-10-15 04:42:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:26,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:31,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:31,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-15 04:42:31,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:31,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:42:31,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:31,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:31,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 04:42:31,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:31,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-15 04:42:31,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:32,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:32,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:32,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:32,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:32,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:32,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:32,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:32,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 103 proven. 80 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-15 04:42:32,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860967654] [2020-10-15 04:42:32,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:32,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:42:32,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171336983] [2020-10-15 04:42:32,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:42:32,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:32,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:42:32,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:42:32,227 INFO L87 Difference]: Start difference. First operand 10449 states and 17301 transitions. Second operand 9 states. [2020-10-15 04:42:34,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:34,675 INFO L93 Difference]: Finished difference Result 25719 states and 42404 transitions. [2020-10-15 04:42:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:42:34,676 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 184 [2020-10-15 04:42:34,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:34,697 INFO L225 Difference]: With dead ends: 25719 [2020-10-15 04:42:34,697 INFO L226 Difference]: Without dead ends: 15289 [2020-10-15 04:42:34,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-15 04:42:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15289 states. [2020-10-15 04:42:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15289 to 13891. [2020-10-15 04:42:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13891 states. [2020-10-15 04:42:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13891 states to 13891 states and 23009 transitions. [2020-10-15 04:42:35,046 INFO L78 Accepts]: Start accepts. Automaton has 13891 states and 23009 transitions. Word has length 184 [2020-10-15 04:42:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:35,046 INFO L479 AbstractCegarLoop]: Abstraction has 13891 states and 23009 transitions. [2020-10-15 04:42:35,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:42:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 13891 states and 23009 transitions. [2020-10-15 04:42:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-15 04:42:35,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:35,062 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:35,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:42:35,063 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:35,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:35,063 INFO L82 PathProgramCache]: Analyzing trace with hash -333362129, now seen corresponding path program 1 times [2020-10-15 04:42:35,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:35,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52932804] [2020-10-15 04:42:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:40,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:40,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-15 04:42:40,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:40,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:42:40,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:40,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:40,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:42:40,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:42:40,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:40,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:40,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:40,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:40,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:40,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:42:40,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:40,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:40,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:40,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-15 04:42:40,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52932804] [2020-10-15 04:42:40,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:40,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:40,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572694854] [2020-10-15 04:42:40,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:40,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:40,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:40,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:40,203 INFO L87 Difference]: Start difference. First operand 13891 states and 23009 transitions. Second operand 5 states. [2020-10-15 04:42:41,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:41,539 INFO L93 Difference]: Finished difference Result 30879 states and 50199 transitions. [2020-10-15 04:42:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:41,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-15 04:42:41,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:41,558 INFO L225 Difference]: With dead ends: 30879 [2020-10-15 04:42:41,559 INFO L226 Difference]: Without dead ends: 17029 [2020-10-15 04:42:41,580 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 [2020-10-15 04:42:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17029 states. [2020-10-15 04:42:41,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17029 to 11847. [2020-10-15 04:42:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11847 states. [2020-10-15 04:42:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11847 states to 11847 states and 19285 transitions. [2020-10-15 04:42:41,872 INFO L78 Accepts]: Start accepts. Automaton has 11847 states and 19285 transitions. Word has length 184 [2020-10-15 04:42:41,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:41,873 INFO L479 AbstractCegarLoop]: Abstraction has 11847 states and 19285 transitions. [2020-10-15 04:42:41,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 11847 states and 19285 transitions. [2020-10-15 04:42:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-15 04:42:41,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:41,886 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:41,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:42:41,886 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:41,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1434092493, now seen corresponding path program 4 times [2020-10-15 04:42:41,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:41,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149648671] [2020-10-15 04:42:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:41,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:41,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:41,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:46,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:46,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-15 04:42:46,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 04:42:46,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:46,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-15 04:42:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:42:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:47,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:47,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:47,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:47,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:47,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:47,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-15 04:42:47,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149648671] [2020-10-15 04:42:47,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:47,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:47,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328875224] [2020-10-15 04:42:47,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:47,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:47,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:47,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:47,041 INFO L87 Difference]: Start difference. First operand 11847 states and 19285 transitions. Second operand 5 states. [2020-10-15 04:42:48,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:48,209 INFO L93 Difference]: Finished difference Result 20205 states and 32355 transitions. [2020-10-15 04:42:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:48,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-15 04:42:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:48,223 INFO L225 Difference]: With dead ends: 20205 [2020-10-15 04:42:48,223 INFO L226 Difference]: Without dead ends: 13461 [2020-10-15 04:42:48,232 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 [2020-10-15 04:42:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13461 states. [2020-10-15 04:42:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13461 to 11903. [2020-10-15 04:42:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11903 states. [2020-10-15 04:42:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11903 states to 11903 states and 19369 transitions. [2020-10-15 04:42:48,488 INFO L78 Accepts]: Start accepts. Automaton has 11903 states and 19369 transitions. Word has length 184 [2020-10-15 04:42:48,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:48,488 INFO L479 AbstractCegarLoop]: Abstraction has 11903 states and 19369 transitions. [2020-10-15 04:42:48,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 11903 states and 19369 transitions. [2020-10-15 04:42:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-15 04:42:48,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:48,500 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:48,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:42:48,501 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:48,501 INFO L82 PathProgramCache]: Analyzing trace with hash -198271133, now seen corresponding path program 5 times [2020-10-15 04:42:48,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:48,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567238042] [2020-10-15 04:42:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:53,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:53,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-15 04:42:53,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:53,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 04:42:53,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:53,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:53,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:53,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:42:53,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:42:53,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:53,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:53,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:53,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:53,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:53,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:53,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:53,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:53,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-15 04:42:53,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567238042] [2020-10-15 04:42:53,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:53,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:53,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264362519] [2020-10-15 04:42:53,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:53,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:53,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:53,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:53,668 INFO L87 Difference]: Start difference. First operand 11903 states and 19369 transitions. Second operand 5 states. [2020-10-15 04:42:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:54,854 INFO L93 Difference]: Finished difference Result 20261 states and 32411 transitions. [2020-10-15 04:42:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:54,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-15 04:42:54,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:54,873 INFO L225 Difference]: With dead ends: 20261 [2020-10-15 04:42:54,873 INFO L226 Difference]: Without dead ends: 13461 [2020-10-15 04:42:54,883 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 [2020-10-15 04:42:54,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13461 states. [2020-10-15 04:42:55,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13461 to 11903. [2020-10-15 04:42:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11903 states. [2020-10-15 04:42:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11903 states to 11903 states and 19341 transitions. [2020-10-15 04:42:55,535 INFO L78 Accepts]: Start accepts. Automaton has 11903 states and 19341 transitions. Word has length 184 [2020-10-15 04:42:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:55,535 INFO L479 AbstractCegarLoop]: Abstraction has 11903 states and 19341 transitions. [2020-10-15 04:42:55,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 11903 states and 19341 transitions. [2020-10-15 04:42:55,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-15 04:42:55,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:55,551 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:55,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:42:55,551 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:55,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:55,552 INFO L82 PathProgramCache]: Analyzing trace with hash 828385455, now seen corresponding path program 1 times [2020-10-15 04:42:55,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:55,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610947938] [2020-10-15 04:42:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:56,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:56,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-15 04:42:56,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1334 [2020-10-15 04:42:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:56,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:42:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:42:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:56,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:56,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:56,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:56,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:56,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:56,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:56,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-15 04:42:57,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610947938] [2020-10-15 04:42:57,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:57,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:57,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402806658] [2020-10-15 04:42:57,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:57,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:57,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:57,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:57,019 INFO L87 Difference]: Start difference. First operand 11903 states and 19341 transitions. Second operand 5 states. [2020-10-15 04:42:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:58,322 INFO L93 Difference]: Finished difference Result 28947 states and 46531 transitions. [2020-10-15 04:42:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:58,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-15 04:42:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:58,344 INFO L225 Difference]: With dead ends: 28947 [2020-10-15 04:42:58,344 INFO L226 Difference]: Without dead ends: 17085 [2020-10-15 04:42:58,355 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 [2020-10-15 04:42:58,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17085 states. [2020-10-15 04:42:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17085 to 14059. [2020-10-15 04:42:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14059 states. [2020-10-15 04:42:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14059 states to 14059 states and 23177 transitions. [2020-10-15 04:42:58,631 INFO L78 Accepts]: Start accepts. Automaton has 14059 states and 23177 transitions. Word has length 184 [2020-10-15 04:42:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:58,631 INFO L479 AbstractCegarLoop]: Abstraction has 14059 states and 23177 transitions. [2020-10-15 04:42:58,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 14059 states and 23177 transitions. [2020-10-15 04:42:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:42:58,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:58,644 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:58,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:42:58,644 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:58,645 INFO L82 PathProgramCache]: Analyzing trace with hash 570407961, now seen corresponding path program 1 times [2020-10-15 04:42:58,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:58,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295158209] [2020-10-15 04:42:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:02,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:02,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:43:02,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:02,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4033 [2020-10-15 04:43:02,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:02,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:43:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:43:02,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:02,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:02,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:02,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:02,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:02,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-15 04:43:02,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295158209] [2020-10-15 04:43:02,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:02,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:02,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455253330] [2020-10-15 04:43:02,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:02,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:02,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:02,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:02,786 INFO L87 Difference]: Start difference. First operand 14059 states and 23177 transitions. Second operand 5 states. [2020-10-15 04:43:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:04,046 INFO L93 Difference]: Finished difference Result 23495 states and 38109 transitions. [2020-10-15 04:43:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:04,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:43:04,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:04,063 INFO L225 Difference]: With dead ends: 23495 [2020-10-15 04:43:04,063 INFO L226 Difference]: Without dead ends: 15617 [2020-10-15 04:43:04,071 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 [2020-10-15 04:43:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15617 states. [2020-10-15 04:43:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15617 to 14059. [2020-10-15 04:43:04,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14059 states. [2020-10-15 04:43:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14059 states to 14059 states and 23149 transitions. [2020-10-15 04:43:04,322 INFO L78 Accepts]: Start accepts. Automaton has 14059 states and 23149 transitions. Word has length 185 [2020-10-15 04:43:04,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:04,323 INFO L479 AbstractCegarLoop]: Abstraction has 14059 states and 23149 transitions. [2020-10-15 04:43:04,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand 14059 states and 23149 transitions. [2020-10-15 04:43:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:43:04,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:04,336 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:04,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:43:04,336 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:04,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1375910882, now seen corresponding path program 1 times [2020-10-15 04:43:04,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:04,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793151644] [2020-10-15 04:43:04,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:04,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:09,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:43:09,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-15 04:43:09,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:09,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:43:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-15 04:43:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:09,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:09,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:09,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:09,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:09,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:09,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 14 proven. 198 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 04:43:10,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793151644] [2020-10-15 04:43:10,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:10,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 04:43:10,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170045742] [2020-10-15 04:43:10,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:43:10,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:10,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:43:10,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:43:10,046 INFO L87 Difference]: Start difference. First operand 14059 states and 23149 transitions. Second operand 12 states. [2020-10-15 04:43:13,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:13,116 INFO L93 Difference]: Finished difference Result 31594 states and 51115 transitions. [2020-10-15 04:43:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:43:13,116 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 185 [2020-10-15 04:43:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:13,141 INFO L225 Difference]: With dead ends: 31594 [2020-10-15 04:43:13,142 INFO L226 Difference]: Without dead ends: 23716 [2020-10-15 04:43:13,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-15 04:43:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23716 states. [2020-10-15 04:43:13,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23716 to 7897. [2020-10-15 04:43:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7897 states. [2020-10-15 04:43:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7897 states to 7897 states and 12951 transitions. [2020-10-15 04:43:13,446 INFO L78 Accepts]: Start accepts. Automaton has 7897 states and 12951 transitions. Word has length 185 [2020-10-15 04:43:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:13,447 INFO L479 AbstractCegarLoop]: Abstraction has 7897 states and 12951 transitions. [2020-10-15 04:43:13,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 04:43:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 7897 states and 12951 transitions. [2020-10-15 04:43:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:43:13,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:13,453 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:13,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:43:13,453 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:13,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:13,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1858772545, now seen corresponding path program 1 times [2020-10-15 04:43:13,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:13,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689462674] [2020-10-15 04:43:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:13,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:13,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:13,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:18,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:18,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:43:18,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:18,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4623 [2020-10-15 04:43:18,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:18,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:43:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:43:18,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:18,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:18,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:18,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:18,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:18,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:18,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:18,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:18,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-15 04:43:18,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689462674] [2020-10-15 04:43:18,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:18,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:18,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455407124] [2020-10-15 04:43:18,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:18,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:18,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:18,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:18,227 INFO L87 Difference]: Start difference. First operand 7897 states and 12951 transitions. Second operand 5 states. [2020-10-15 04:43:19,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:19,517 INFO L93 Difference]: Finished difference Result 17219 states and 27712 transitions. [2020-10-15 04:43:19,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:19,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:43:19,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:19,527 INFO L225 Difference]: With dead ends: 17219 [2020-10-15 04:43:19,527 INFO L226 Difference]: Without dead ends: 9341 [2020-10-15 04:43:19,535 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 [2020-10-15 04:43:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2020-10-15 04:43:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 7897. [2020-10-15 04:43:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7897 states. [2020-10-15 04:43:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7897 states to 7897 states and 12923 transitions. [2020-10-15 04:43:19,753 INFO L78 Accepts]: Start accepts. Automaton has 7897 states and 12923 transitions. Word has length 185 [2020-10-15 04:43:19,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:19,753 INFO L479 AbstractCegarLoop]: Abstraction has 7897 states and 12923 transitions. [2020-10-15 04:43:19,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7897 states and 12923 transitions. [2020-10-15 04:43:19,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:43:19,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:19,760 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:19,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:43:19,760 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:19,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2038338090, now seen corresponding path program 2 times [2020-10-15 04:43:19,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:19,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814683035] [2020-10-15 04:43:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:19,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:43:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:43:24,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:24,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:43:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-15 04:43:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:25,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:25,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:25,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:25,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:25,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:25,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 43 proven. 144 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 04:43:25,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814683035] [2020-10-15 04:43:25,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:25,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:43:25,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939400038] [2020-10-15 04:43:25,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:43:25,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:25,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:43:25,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:43:25,467 INFO L87 Difference]: Start difference. First operand 7897 states and 12923 transitions. Second operand 10 states. [2020-10-15 04:43:28,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:28,019 INFO L93 Difference]: Finished difference Result 17129 states and 27538 transitions. [2020-10-15 04:43:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:43:28,020 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-10-15 04:43:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:28,033 INFO L225 Difference]: With dead ends: 17129 [2020-10-15 04:43:28,033 INFO L226 Difference]: Without dead ends: 12719 [2020-10-15 04:43:28,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 10 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:43:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12719 states. [2020-10-15 04:43:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12719 to 4725. [2020-10-15 04:43:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4725 states. [2020-10-15 04:43:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 7717 transitions. [2020-10-15 04:43:28,223 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 7717 transitions. Word has length 185 [2020-10-15 04:43:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:28,224 INFO L479 AbstractCegarLoop]: Abstraction has 4725 states and 7717 transitions. [2020-10-15 04:43:28,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:43:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 7717 transitions. [2020-10-15 04:43:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:43:28,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:28,230 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:28,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:43:28,231 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:28,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:28,232 INFO L82 PathProgramCache]: Analyzing trace with hash -97189389, now seen corresponding path program 1 times [2020-10-15 04:43:28,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:28,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082774304] [2020-10-15 04:43:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:28,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:29,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:29,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:43:29,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:43:29,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-10-15 04:43:29,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:29,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:43:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:43:29,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:29,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:29,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:29,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:29,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:29,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:29,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:29,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:29,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:29,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:29,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:29,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:29,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-15 04:43:29,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082774304] [2020-10-15 04:43:29,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:29,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:29,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494159809] [2020-10-15 04:43:29,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:29,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:29,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:29,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:29,527 INFO L87 Difference]: Start difference. First operand 4725 states and 7717 transitions. Second operand 5 states. [2020-10-15 04:43:30,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:30,784 INFO L93 Difference]: Finished difference Result 10327 states and 16598 transitions. [2020-10-15 04:43:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:30,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:43:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:30,790 INFO L225 Difference]: With dead ends: 10327 [2020-10-15 04:43:30,790 INFO L226 Difference]: Without dead ends: 5621 [2020-10-15 04:43:30,794 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 [2020-10-15 04:43:30,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5621 states. [2020-10-15 04:43:30,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5621 to 4741. [2020-10-15 04:43:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4741 states. [2020-10-15 04:43:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 7733 transitions. [2020-10-15 04:43:30,949 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 7733 transitions. Word has length 185 [2020-10-15 04:43:30,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:30,949 INFO L479 AbstractCegarLoop]: Abstraction has 4741 states and 7733 transitions. [2020-10-15 04:43:30,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:30,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 7733 transitions. [2020-10-15 04:43:30,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-15 04:43:30,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:30,954 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:30,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:43:30,954 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:30,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:30,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2075039098, now seen corresponding path program 1 times [2020-10-15 04:43:30,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:30,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632366384] [2020-10-15 04:43:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:31,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:31,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:36,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 04:43:36,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:36,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:43:36,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:36,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-15 04:43:36,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:43:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:36,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:36,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:36,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:36,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:36,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:36,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-15 04:43:36,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632366384] [2020-10-15 04:43:36,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:36,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:36,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661885743] [2020-10-15 04:43:36,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:36,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:36,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:36,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:36,099 INFO L87 Difference]: Start difference. First operand 4741 states and 7733 transitions. Second operand 5 states. [2020-10-15 04:43:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:37,427 INFO L93 Difference]: Finished difference Result 11105 states and 17927 transitions. [2020-10-15 04:43:37,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:37,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-15 04:43:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:37,435 INFO L225 Difference]: With dead ends: 11105 [2020-10-15 04:43:37,435 INFO L226 Difference]: Without dead ends: 6383 [2020-10-15 04:43:37,439 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 [2020-10-15 04:43:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2020-10-15 04:43:37,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 5325. [2020-10-15 04:43:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5325 states. [2020-10-15 04:43:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5325 states to 5325 states and 8797 transitions. [2020-10-15 04:43:37,603 INFO L78 Accepts]: Start accepts. Automaton has 5325 states and 8797 transitions. Word has length 186 [2020-10-15 04:43:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:37,603 INFO L479 AbstractCegarLoop]: Abstraction has 5325 states and 8797 transitions. [2020-10-15 04:43:37,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:37,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5325 states and 8797 transitions. [2020-10-15 04:43:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:37,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:37,608 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:37,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:43:37,608 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:37,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1976459012, now seen corresponding path program 1 times [2020-10-15 04:43:37,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:37,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712635428] [2020-10-15 04:43:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:42,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:42,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:42,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:42,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-15 04:43:42,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:42,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-15 04:43:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:43:42,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:42,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:42,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:42,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:42,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:42,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:42,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:42,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-15 04:43:42,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712635428] [2020-10-15 04:43:42,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:42,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:42,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917544385] [2020-10-15 04:43:42,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:42,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:42,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:42,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:42,805 INFO L87 Difference]: Start difference. First operand 5325 states and 8797 transitions. Second operand 5 states. [2020-10-15 04:43:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:44,120 INFO L93 Difference]: Finished difference Result 11625 states and 18905 transitions. [2020-10-15 04:43:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:44,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:44,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:44,128 INFO L225 Difference]: With dead ends: 11625 [2020-10-15 04:43:44,128 INFO L226 Difference]: Without dead ends: 6319 [2020-10-15 04:43:44,132 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 [2020-10-15 04:43:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2020-10-15 04:43:44,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 4741. [2020-10-15 04:43:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4741 states. [2020-10-15 04:43:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 7733 transitions. [2020-10-15 04:43:44,298 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 7733 transitions. Word has length 187 [2020-10-15 04:43:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:44,298 INFO L479 AbstractCegarLoop]: Abstraction has 4741 states and 7733 transitions. [2020-10-15 04:43:44,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 7733 transitions. [2020-10-15 04:43:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:44,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:44,302 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:44,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:43:44,303 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:44,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:44,303 INFO L82 PathProgramCache]: Analyzing trace with hash -729493346, now seen corresponding path program 1 times [2020-10-15 04:43:44,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:44,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908250394] [2020-10-15 04:43:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:44,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:45,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:45,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:45,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:45,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:43:45,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1490 [2020-10-15 04:43:45,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:45,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-15 04:43:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:43:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:45,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:45,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:45,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:45,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:45,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-15 04:43:45,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908250394] [2020-10-15 04:43:45,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:45,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:45,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686393602] [2020-10-15 04:43:45,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:45,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:45,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:45,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:45,919 INFO L87 Difference]: Start difference. First operand 4741 states and 7733 transitions. Second operand 5 states. [2020-10-15 04:43:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:47,228 INFO L93 Difference]: Finished difference Result 11041 states and 17825 transitions. [2020-10-15 04:43:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:47,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:47,235 INFO L225 Difference]: With dead ends: 11041 [2020-10-15 04:43:47,235 INFO L226 Difference]: Without dead ends: 6319 [2020-10-15 04:43:47,239 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 [2020-10-15 04:43:47,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2020-10-15 04:43:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 5357. [2020-10-15 04:43:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5357 states. [2020-10-15 04:43:47,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 8829 transitions. [2020-10-15 04:43:47,414 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 8829 transitions. Word has length 187 [2020-10-15 04:43:47,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:47,414 INFO L479 AbstractCegarLoop]: Abstraction has 5357 states and 8829 transitions. [2020-10-15 04:43:47,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 8829 transitions. [2020-10-15 04:43:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-15 04:43:47,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:47,418 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:47,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:43:47,419 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:47,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1146791964, now seen corresponding path program 1 times [2020-10-15 04:43:47,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:47,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975605446] [2020-10-15 04:43:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:49,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:49,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-15 04:43:49,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:43:49,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1570 [2020-10-15 04:43:49,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:49,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:49,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:49,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-15 04:43:49,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:43:49,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:49,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:49,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:49,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:49,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:49,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:49,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-15 04:43:49,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975605446] [2020-10-15 04:43:49,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:49,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:49,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527141102] [2020-10-15 04:43:49,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:49,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:49,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:49,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:49,149 INFO L87 Difference]: Start difference. First operand 5357 states and 8829 transitions. Second operand 5 states. [2020-10-15 04:43:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:50,474 INFO L93 Difference]: Finished difference Result 11591 states and 18822 transitions. [2020-10-15 04:43:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:50,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-15 04:43:50,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:50,481 INFO L225 Difference]: With dead ends: 11591 [2020-10-15 04:43:50,482 INFO L226 Difference]: Without dead ends: 6253 [2020-10-15 04:43:50,486 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 [2020-10-15 04:43:50,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2020-10-15 04:43:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 4741. [2020-10-15 04:43:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4741 states. [2020-10-15 04:43:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 7733 transitions. [2020-10-15 04:43:50,656 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 7733 transitions. Word has length 188 [2020-10-15 04:43:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:50,657 INFO L479 AbstractCegarLoop]: Abstraction has 4741 states and 7733 transitions. [2020-10-15 04:43:50,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 7733 transitions. [2020-10-15 04:43:50,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-15 04:43:50,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:50,661 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:50,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:43:50,661 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:50,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:50,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1864984992, now seen corresponding path program 1 times [2020-10-15 04:43:50,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:50,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9460921] [2020-10-15 04:43:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:50,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:55,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:55,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-15 04:43:55,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:55,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-15 04:43:55,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:55,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:55,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:55,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-15 04:43:55,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:43:55,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:55,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:55,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:55,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:55,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:55,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:55,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:55,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-15 04:43:55,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9460921] [2020-10-15 04:43:55,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:55,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:55,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296522430] [2020-10-15 04:43:55,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:55,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:55,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:55,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:55,842 INFO L87 Difference]: Start difference. First operand 4741 states and 7733 transitions. Second operand 5 states. [2020-10-15 04:43:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:57,247 INFO L93 Difference]: Finished difference Result 11121 states and 17943 transitions. [2020-10-15 04:43:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:57,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-15 04:43:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:57,254 INFO L225 Difference]: With dead ends: 11121 [2020-10-15 04:43:57,254 INFO L226 Difference]: Without dead ends: 6399 [2020-10-15 04:43:57,258 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 [2020-10-15 04:43:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2020-10-15 04:43:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5341. [2020-10-15 04:43:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5341 states. [2020-10-15 04:43:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 8813 transitions. [2020-10-15 04:43:57,440 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 8813 transitions. Word has length 191 [2020-10-15 04:43:57,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:57,440 INFO L479 AbstractCegarLoop]: Abstraction has 5341 states and 8813 transitions. [2020-10-15 04:43:57,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 8813 transitions. [2020-10-15 04:43:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-15 04:43:57,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:57,444 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:57,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 04:43:57,445 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:57,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1937356130, now seen corresponding path program 1 times [2020-10-15 04:43:57,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:57,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195318690] [2020-10-15 04:43:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:57,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:57,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:57,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:57,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:02,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:02,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-15 04:44:02,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:02,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:44:02,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:02,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:44:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 04:44:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 04:44:02,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:02,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:02,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:02,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:02,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:02,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:02,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:02,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:02,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 258 proven. 35 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-15 04:44:02,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195318690] [2020-10-15 04:44:02,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:44:02,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 04:44:02,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451886798] [2020-10-15 04:44:02,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:44:02,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:02,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:44:02,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:44:02,782 INFO L87 Difference]: Start difference. First operand 5341 states and 8813 transitions. Second operand 7 states. [2020-10-15 04:44:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:04,874 INFO L93 Difference]: Finished difference Result 14931 states and 24690 transitions. [2020-10-15 04:44:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:44:04,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-15 04:44:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:04,883 INFO L225 Difference]: With dead ends: 14931 [2020-10-15 04:44:04,883 INFO L226 Difference]: Without dead ends: 9609 [2020-10-15 04:44:04,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:44:04,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2020-10-15 04:44:05,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9397. [2020-10-15 04:44:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9397 states. [2020-10-15 04:44:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 15635 transitions. [2020-10-15 04:44:05,204 INFO L78 Accepts]: Start accepts. Automaton has 9397 states and 15635 transitions. Word has length 191 [2020-10-15 04:44:05,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:05,204 INFO L479 AbstractCegarLoop]: Abstraction has 9397 states and 15635 transitions. [2020-10-15 04:44:05,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:44:05,205 INFO L276 IsEmpty]: Start isEmpty. Operand 9397 states and 15635 transitions. [2020-10-15 04:44:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-15 04:44:05,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:05,212 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:05,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 04:44:05,212 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:05,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:05,213 INFO L82 PathProgramCache]: Analyzing trace with hash -356376660, now seen corresponding path program 1 times [2020-10-15 04:44:05,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:05,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776293022] [2020-10-15 04:44:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:05,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:10,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:10,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-15 04:44:10,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:44:10,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:10,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-15 04:44:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:44:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:10,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:10,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:10,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:10,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:10,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:44:10,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:10,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-15 04:44:10,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776293022] [2020-10-15 04:44:10,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:10,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:10,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752036827] [2020-10-15 04:44:10,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:10,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:10,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:10,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:10,336 INFO L87 Difference]: Start difference. First operand 9397 states and 15635 transitions. Second operand 5 states. [2020-10-15 04:44:12,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:12,036 INFO L93 Difference]: Finished difference Result 21865 states and 35967 transitions. [2020-10-15 04:44:12,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:12,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-15 04:44:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:12,050 INFO L225 Difference]: With dead ends: 21865 [2020-10-15 04:44:12,050 INFO L226 Difference]: Without dead ends: 12487 [2020-10-15 04:44:12,057 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 [2020-10-15 04:44:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12487 states. [2020-10-15 04:44:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12487 to 9397. [2020-10-15 04:44:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9397 states. [2020-10-15 04:44:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 15635 transitions. [2020-10-15 04:44:12,418 INFO L78 Accepts]: Start accepts. Automaton has 9397 states and 15635 transitions. Word has length 191 [2020-10-15 04:44:12,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:12,418 INFO L479 AbstractCegarLoop]: Abstraction has 9397 states and 15635 transitions. [2020-10-15 04:44:12,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:12,418 INFO L276 IsEmpty]: Start isEmpty. Operand 9397 states and 15635 transitions. [2020-10-15 04:44:12,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-15 04:44:12,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:12,426 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:12,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 04:44:12,426 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:12,427 INFO L82 PathProgramCache]: Analyzing trace with hash 880624928, now seen corresponding path program 1 times [2020-10-15 04:44:12,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:12,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621603987] [2020-10-15 04:44:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:12,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:17,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:17,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-15 04:44:17,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:44:17,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 04:44:17,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:17,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 04:44:17,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:44:17,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-15 04:44:17,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:17,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:17,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:17,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:17,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:17,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:17,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:17,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:17,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 227 proven. 66 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-15 04:44:17,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621603987] [2020-10-15 04:44:17,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:44:17,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:44:17,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145129831] [2020-10-15 04:44:17,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:44:17,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:17,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:44:17,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:44:17,911 INFO L87 Difference]: Start difference. First operand 9397 states and 15635 transitions. Second operand 10 states. [2020-10-15 04:44:21,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:21,906 INFO L93 Difference]: Finished difference Result 27823 states and 46283 transitions. [2020-10-15 04:44:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:44:21,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 191 [2020-10-15 04:44:21,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:21,926 INFO L225 Difference]: With dead ends: 27823 [2020-10-15 04:44:21,926 INFO L226 Difference]: Without dead ends: 18445 [2020-10-15 04:44:21,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:44:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18445 states. [2020-10-15 04:44:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18445 to 14909. [2020-10-15 04:44:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14909 states. [2020-10-15 04:44:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14909 states to 14909 states and 24953 transitions. [2020-10-15 04:44:22,616 INFO L78 Accepts]: Start accepts. Automaton has 14909 states and 24953 transitions. Word has length 191 [2020-10-15 04:44:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:22,617 INFO L479 AbstractCegarLoop]: Abstraction has 14909 states and 24953 transitions. [2020-10-15 04:44:22,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:44:22,617 INFO L276 IsEmpty]: Start isEmpty. Operand 14909 states and 24953 transitions. [2020-10-15 04:44:22,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-15 04:44:22,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:22,629 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:22,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 04:44:22,629 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:22,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2019323616, now seen corresponding path program 1 times [2020-10-15 04:44:22,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:22,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440815819] [2020-10-15 04:44:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:22,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking...