/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:51:05,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:51:05,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:51:05,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:51:05,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:51:05,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:51:05,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:51:05,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:51:05,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:51:05,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:51:05,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:51:05,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:51:05,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:51:05,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:51:05,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:51:05,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:51:05,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:51:05,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:51:05,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:51:05,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:51:05,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:51:05,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:51:05,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:51:05,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:51:05,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:51:05,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:51:05,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:51:05,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:51:05,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:51:05,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:51:05,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:51:05,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:51:05,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:51:05,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:51:05,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:51:05,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:51:05,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:51:05,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:51:05,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:51:05,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:51:05,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:51:05,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:51:05,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:51:05,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:51:05,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:51:05,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:51:05,657 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:51:05,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:51:05,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:51:05,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:51:05,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:51:05,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:51:05,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:51:05,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:51:05,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:51:05,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:51:05,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:51:05,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:51:05,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:51:05,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:51:05,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:51:05,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:51:05,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:51:05,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:51:05,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:51:05,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:51:05,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:51:05,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:51:05,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:51:05,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:51:05,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:51:05,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:51:05,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:51:05,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:51:05,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:51:05,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:51:05,979 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:51:05,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-1.c [2020-10-12 20:51:06,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f848614b/ce375da174544477a491a30f565b3e86/FLAG3fe46fbdb [2020-10-12 20:51:06,589 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:51:06,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-1.c [2020-10-12 20:51:06,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f848614b/ce375da174544477a491a30f565b3e86/FLAG3fe46fbdb [2020-10-12 20:51:06,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f848614b/ce375da174544477a491a30f565b3e86 [2020-10-12 20:51:06,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:51:06,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:51:06,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:51:06,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:51:06,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:51:06,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:51:06" (1/1) ... [2020-10-12 20:51:06,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72027312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:06, skipping insertion in model container [2020-10-12 20:51:06,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:51:06" (1/1) ... [2020-10-12 20:51:06,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:51:06,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:51:07,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:51:07,583 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:51:07,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:51:07,783 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:51:07,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:07 WrapperNode [2020-10-12 20:51:07,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:51:07,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:51:07,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:51:07,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:51:07,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:07" (1/1) ... [2020-10-12 20:51:07,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:07" (1/1) ... [2020-10-12 20:51:07,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:07" (1/1) ... [2020-10-12 20:51:07,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:07" (1/1) ... [2020-10-12 20:51:07,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:07" (1/1) ... [2020-10-12 20:51:07,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:07" (1/1) ... [2020-10-12 20:51:07,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:07" (1/1) ... [2020-10-12 20:51:07,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:51:07,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:51:07,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:51:07,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:51:07,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:51:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:51:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:51:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:51:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:51:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:51:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:51:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:51:08,033 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:51:08,033 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:51:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:51:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:51:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:51:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:51:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:51:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:51:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:51:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:51:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:51:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:51:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:51:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:51:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:51:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:51:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:51:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:51:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:51:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:51:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:51:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:51:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:51:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:51:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:51:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:51:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:51:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:51:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:51:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:51:08,491 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:51:09,094 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:51:09,094 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:51:09,115 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:51:09,115 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:51:09,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:51:09 BoogieIcfgContainer [2020-10-12 20:51:09,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:51:09,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:51:09,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:51:09,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:51:09,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:51:06" (1/3) ... [2020-10-12 20:51:09,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a827643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:51:09, skipping insertion in model container [2020-10-12 20:51:09,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:07" (2/3) ... [2020-10-12 20:51:09,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a827643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:51:09, skipping insertion in model container [2020-10-12 20:51:09,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:51:09" (3/3) ... [2020-10-12 20:51:09,128 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-1.c [2020-10-12 20:51:09,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:51:09,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:51:09,161 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:51:09,186 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:51:09,186 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:51:09,186 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:51:09,187 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:51:09,187 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:51:09,187 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:51:09,187 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:51:09,187 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:51:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-12 20:51:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 20:51:09,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:09,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:09,222 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:09,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:09,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1486764871, now seen corresponding path program 1 times [2020-10-12 20:51:09,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:09,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620784013] [2020-10-12 20:51:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:09,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:09,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:10,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:10,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 20:51:10,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-10-12 20:51:10,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:10,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:10,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:51:10,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:51:10,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:51:10,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:10,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:10,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:10,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:10,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:51:10,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:51:10,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620784013] [2020-10-12 20:51:10,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:10,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:10,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754303650] [2020-10-12 20:51:10,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:10,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:10,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:10,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:10,560 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 5 states. [2020-10-12 20:51:11,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:11,649 INFO L93 Difference]: Finished difference Result 400 states and 666 transitions. [2020-10-12 20:51:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:11,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-12 20:51:11,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:11,666 INFO L225 Difference]: With dead ends: 400 [2020-10-12 20:51:11,666 INFO L226 Difference]: Without dead ends: 234 [2020-10-12 20:51:11,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:11,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-12 20:51:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 173. [2020-10-12 20:51:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-12 20:51:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 273 transitions. [2020-10-12 20:51:11,739 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 273 transitions. Word has length 52 [2020-10-12 20:51:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:11,740 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 273 transitions. [2020-10-12 20:51:11,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 273 transitions. [2020-10-12 20:51:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 20:51:11,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:11,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:11,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:51:11,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:11,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:11,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1374881063, now seen corresponding path program 1 times [2020-10-12 20:51:11,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:11,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335498893] [2020-10-12 20:51:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:11,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:12,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:12,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:12,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 20:51:12,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:12,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-12 20:51:12,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:51:12,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 20:51:12,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:12,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:12,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:12,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:51:12,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:51:12,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335498893] [2020-10-12 20:51:12,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:12,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:12,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712159491] [2020-10-12 20:51:12,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:12,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:12,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:12,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:12,440 INFO L87 Difference]: Start difference. First operand 173 states and 273 transitions. Second operand 5 states. [2020-10-12 20:51:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:13,241 INFO L93 Difference]: Finished difference Result 352 states and 534 transitions. [2020-10-12 20:51:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:13,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-12 20:51:13,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:13,250 INFO L225 Difference]: With dead ends: 352 [2020-10-12 20:51:13,250 INFO L226 Difference]: Without dead ends: 226 [2020-10-12 20:51:13,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:13,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-12 20:51:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 172. [2020-10-12 20:51:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-12 20:51:13,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 271 transitions. [2020-10-12 20:51:13,294 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 271 transitions. Word has length 53 [2020-10-12 20:51:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:13,294 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 271 transitions. [2020-10-12 20:51:13,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 271 transitions. [2020-10-12 20:51:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:51:13,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:13,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:13,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:51:13,304 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:13,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:13,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1558764665, now seen corresponding path program 1 times [2020-10-12 20:51:13,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:13,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473645128] [2020-10-12 20:51:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:13,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:13,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:14,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:14,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:51:14,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:51:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-12 20:51:14,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:51:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:51:14,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:14,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:14,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:14,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:14,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:51:14,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:14,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:14,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:51:14,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473645128] [2020-10-12 20:51:14,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:14,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:14,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105827178] [2020-10-12 20:51:14,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:14,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:14,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:14,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:14,714 INFO L87 Difference]: Start difference. First operand 172 states and 271 transitions. Second operand 5 states. [2020-10-12 20:51:15,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:15,500 INFO L93 Difference]: Finished difference Result 350 states and 531 transitions. [2020-10-12 20:51:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:15,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:51:15,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:15,504 INFO L225 Difference]: With dead ends: 350 [2020-10-12 20:51:15,504 INFO L226 Difference]: Without dead ends: 226 [2020-10-12 20:51:15,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-12 20:51:15,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 172. [2020-10-12 20:51:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-12 20:51:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 270 transitions. [2020-10-12 20:51:15,532 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 270 transitions. Word has length 65 [2020-10-12 20:51:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:15,533 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 270 transitions. [2020-10-12 20:51:15,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:15,533 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 270 transitions. [2020-10-12 20:51:15,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 20:51:15,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:15,540 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:15,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:51:15,541 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:15,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:15,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1632716410, now seen corresponding path program 1 times [2020-10-12 20:51:15,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:15,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727291246] [2020-10-12 20:51:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:15,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:16,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:16,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:51:16,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:51:16,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-10-12 20:51:16,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:51:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:51:16,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:16,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:16,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:16,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:16,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:16,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:16,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:51:16,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727291246] [2020-10-12 20:51:16,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:16,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:16,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378254532] [2020-10-12 20:51:16,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:16,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:16,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:16,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:16,636 INFO L87 Difference]: Start difference. First operand 172 states and 270 transitions. Second operand 5 states. [2020-10-12 20:51:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:17,377 INFO L93 Difference]: Finished difference Result 348 states and 528 transitions. [2020-10-12 20:51:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:17,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-12 20:51:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:17,379 INFO L225 Difference]: With dead ends: 348 [2020-10-12 20:51:17,380 INFO L226 Difference]: Without dead ends: 224 [2020-10-12 20:51:17,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-12 20:51:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 172. [2020-10-12 20:51:17,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-12 20:51:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 269 transitions. [2020-10-12 20:51:17,390 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 269 transitions. Word has length 66 [2020-10-12 20:51:17,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:17,391 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 269 transitions. [2020-10-12 20:51:17,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:17,391 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 269 transitions. [2020-10-12 20:51:17,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 20:51:17,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:17,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:17,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:51:17,393 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:17,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:17,393 INFO L82 PathProgramCache]: Analyzing trace with hash 169235989, now seen corresponding path program 1 times [2020-10-12 20:51:17,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:17,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657347012] [2020-10-12 20:51:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:17,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:17,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:17,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:17,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:51:17,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-12 20:51:17,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:51:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:51:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:17,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:17,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:17,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:17,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:17,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:17,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:51:17,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:17,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:17,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:17,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:17,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:51:17,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657347012] [2020-10-12 20:51:17,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:17,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:17,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244575582] [2020-10-12 20:51:17,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:17,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:17,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:17,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:17,892 INFO L87 Difference]: Start difference. First operand 172 states and 269 transitions. Second operand 5 states. [2020-10-12 20:51:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:18,695 INFO L93 Difference]: Finished difference Result 347 states and 526 transitions. [2020-10-12 20:51:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:18,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-12 20:51:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:18,700 INFO L225 Difference]: With dead ends: 347 [2020-10-12 20:51:18,700 INFO L226 Difference]: Without dead ends: 223 [2020-10-12 20:51:18,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-12 20:51:18,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 172. [2020-10-12 20:51:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-12 20:51:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 268 transitions. [2020-10-12 20:51:18,715 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 268 transitions. Word has length 66 [2020-10-12 20:51:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:18,724 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 268 transitions. [2020-10-12 20:51:18,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 268 transitions. [2020-10-12 20:51:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:51:18,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:18,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:18,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:51:18,725 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:18,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:18,726 INFO L82 PathProgramCache]: Analyzing trace with hash 776263001, now seen corresponding path program 1 times [2020-10-12 20:51:18,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:18,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385794568] [2020-10-12 20:51:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:21,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:23,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:23,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:51:23,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:51:23,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4406 [2020-10-12 20:51:23,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:51:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:51:23,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:51:23,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:23,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:23,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:23,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:23,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:23,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:23,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:23,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:23,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:51:23,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385794568] [2020-10-12 20:51:23,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:23,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:23,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638785075] [2020-10-12 20:51:23,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:23,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:23,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:23,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:23,245 INFO L87 Difference]: Start difference. First operand 172 states and 268 transitions. Second operand 5 states. [2020-10-12 20:51:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:23,963 INFO L93 Difference]: Finished difference Result 347 states and 525 transitions. [2020-10-12 20:51:23,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:23,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-12 20:51:23,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:23,966 INFO L225 Difference]: With dead ends: 347 [2020-10-12 20:51:23,966 INFO L226 Difference]: Without dead ends: 223 [2020-10-12 20:51:23,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:23,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-12 20:51:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 182. [2020-10-12 20:51:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-12 20:51:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 280 transitions. [2020-10-12 20:51:23,977 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 280 transitions. Word has length 67 [2020-10-12 20:51:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:23,978 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 280 transitions. [2020-10-12 20:51:23,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 280 transitions. [2020-10-12 20:51:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:51:23,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:23,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:23,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:51:23,980 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:23,980 INFO L82 PathProgramCache]: Analyzing trace with hash -594385890, now seen corresponding path program 1 times [2020-10-12 20:51:23,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:23,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809111839] [2020-10-12 20:51:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:24,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:24,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:28,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:29,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:29,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:51:29,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:51:29,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:51:29,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:29,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:51:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:51:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:29,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:29,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:29,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:29,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:29,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:51:29,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:51:29,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809111839] [2020-10-12 20:51:29,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:29,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:51:29,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379334655] [2020-10-12 20:51:29,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:51:29,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:29,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:51:29,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:51:29,264 INFO L87 Difference]: Start difference. First operand 182 states and 280 transitions. Second operand 8 states. [2020-10-12 20:51:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:30,539 INFO L93 Difference]: Finished difference Result 449 states and 687 transitions. [2020-10-12 20:51:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:51:30,540 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-12 20:51:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:30,542 INFO L225 Difference]: With dead ends: 449 [2020-10-12 20:51:30,543 INFO L226 Difference]: Without dead ends: 302 [2020-10-12 20:51:30,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:51:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-12 20:51:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 258. [2020-10-12 20:51:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-12 20:51:30,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 392 transitions. [2020-10-12 20:51:30,555 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 392 transitions. Word has length 68 [2020-10-12 20:51:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:30,555 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 392 transitions. [2020-10-12 20:51:30,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:51:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 392 transitions. [2020-10-12 20:51:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:51:30,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:30,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:30,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:51:30,557 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:30,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:30,558 INFO L82 PathProgramCache]: Analyzing trace with hash 415305612, now seen corresponding path program 1 times [2020-10-12 20:51:30,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:30,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304752659] [2020-10-12 20:51:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:30,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:30,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:30,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:31,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:31,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:51:31,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-12 20:51:31,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:51:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:51:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:51:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:31,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:31,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:31,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:31,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:31,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:31,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:31,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:51:31,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304752659] [2020-10-12 20:51:31,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:31,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:31,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104077771] [2020-10-12 20:51:31,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:31,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:31,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:31,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:31,146 INFO L87 Difference]: Start difference. First operand 258 states and 392 transitions. Second operand 5 states. [2020-10-12 20:51:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:31,934 INFO L93 Difference]: Finished difference Result 565 states and 866 transitions. [2020-10-12 20:51:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:31,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-12 20:51:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:31,940 INFO L225 Difference]: With dead ends: 565 [2020-10-12 20:51:31,940 INFO L226 Difference]: Without dead ends: 441 [2020-10-12 20:51:31,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-12 20:51:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 341. [2020-10-12 20:51:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-12 20:51:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 547 transitions. [2020-10-12 20:51:31,964 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 547 transitions. Word has length 69 [2020-10-12 20:51:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:31,965 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 547 transitions. [2020-10-12 20:51:31,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 547 transitions. [2020-10-12 20:51:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:51:31,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:31,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:31,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:51:31,967 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:31,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:31,967 INFO L82 PathProgramCache]: Analyzing trace with hash -230379724, now seen corresponding path program 1 times [2020-10-12 20:51:31,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:31,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129988712] [2020-10-12 20:51:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:31,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:32,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:32,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:32,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 20:51:32,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-12 20:51:32,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:51:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:51:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:51:32,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:32,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:32,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:32,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:32,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:32,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:32,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:32,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:32,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:32,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:32,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:51:32,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129988712] [2020-10-12 20:51:32,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:32,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:32,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120543742] [2020-10-12 20:51:32,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:32,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:32,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:32,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:32,340 INFO L87 Difference]: Start difference. First operand 341 states and 547 transitions. Second operand 5 states. [2020-10-12 20:51:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:33,010 INFO L93 Difference]: Finished difference Result 649 states and 1025 transitions. [2020-10-12 20:51:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:33,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-12 20:51:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:33,013 INFO L225 Difference]: With dead ends: 649 [2020-10-12 20:51:33,013 INFO L226 Difference]: Without dead ends: 342 [2020-10-12 20:51:33,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:33,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-12 20:51:33,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 302. [2020-10-12 20:51:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-12 20:51:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 468 transitions. [2020-10-12 20:51:33,024 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 468 transitions. Word has length 70 [2020-10-12 20:51:33,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:33,025 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 468 transitions. [2020-10-12 20:51:33,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:33,025 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 468 transitions. [2020-10-12 20:51:33,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:51:33,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:33,027 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:33,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:51:33,027 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:33,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:33,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2073538544, now seen corresponding path program 1 times [2020-10-12 20:51:33,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:33,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83843813] [2020-10-12 20:51:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:33,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:33,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:33,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:38,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:38,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:51:38,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:51:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:51:38,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:51:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:51:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:51:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:38,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:38,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:38,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:38,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:38,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:38,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:38,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:51:38,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83843813] [2020-10-12 20:51:38,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:38,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:51:38,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517741082] [2020-10-12 20:51:38,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:51:38,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:38,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:51:38,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:38,141 INFO L87 Difference]: Start difference. First operand 302 states and 468 transitions. Second operand 6 states. [2020-10-12 20:51:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:38,950 INFO L93 Difference]: Finished difference Result 597 states and 927 transitions. [2020-10-12 20:51:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:51:38,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-12 20:51:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:38,954 INFO L225 Difference]: With dead ends: 597 [2020-10-12 20:51:38,954 INFO L226 Difference]: Without dead ends: 319 [2020-10-12 20:51:38,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:51:38,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-12 20:51:38,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-10-12 20:51:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 20:51:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 488 transitions. [2020-10-12 20:51:38,971 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 488 transitions. Word has length 81 [2020-10-12 20:51:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:38,972 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 488 transitions. [2020-10-12 20:51:38,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:51:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 488 transitions. [2020-10-12 20:51:38,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:51:38,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:38,974 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:38,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:51:38,975 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:38,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1214140508, now seen corresponding path program 1 times [2020-10-12 20:51:38,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:38,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490048748] [2020-10-12 20:51:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:43,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:43,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:51:43,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:51:43,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:51:43,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:51:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:51:43,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:44,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:44,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:44,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:44,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:44,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:44,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:44,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:51:44,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490048748] [2020-10-12 20:51:44,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:44,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:44,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806141562] [2020-10-12 20:51:44,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:44,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:44,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:44,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:44,067 INFO L87 Difference]: Start difference. First operand 319 states and 488 transitions. Second operand 5 states. [2020-10-12 20:51:44,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:44,722 INFO L93 Difference]: Finished difference Result 619 states and 951 transitions. [2020-10-12 20:51:44,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:44,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:51:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:44,725 INFO L225 Difference]: With dead ends: 619 [2020-10-12 20:51:44,725 INFO L226 Difference]: Without dead ends: 324 [2020-10-12 20:51:44,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-12 20:51:44,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 319. [2020-10-12 20:51:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 20:51:44,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 487 transitions. [2020-10-12 20:51:44,738 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 487 transitions. Word has length 81 [2020-10-12 20:51:44,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:44,738 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 487 transitions. [2020-10-12 20:51:44,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:44,738 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 487 transitions. [2020-10-12 20:51:44,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:51:44,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:44,740 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:44,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:51:44,740 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:44,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:44,740 INFO L82 PathProgramCache]: Analyzing trace with hash 526291799, now seen corresponding path program 1 times [2020-10-12 20:51:44,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:44,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301957388] [2020-10-12 20:51:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:44,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:48,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:48,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:51:48,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:51:48,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3937 [2020-10-12 20:51:48,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:48,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:51:48,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:51:48,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:48,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:48,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:48,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:48,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:48,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:48,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:51:48,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301957388] [2020-10-12 20:51:48,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:48,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:48,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768066927] [2020-10-12 20:51:48,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:48,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:48,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:48,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:48,757 INFO L87 Difference]: Start difference. First operand 319 states and 487 transitions. Second operand 5 states. [2020-10-12 20:51:49,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:49,360 INFO L93 Difference]: Finished difference Result 619 states and 950 transitions. [2020-10-12 20:51:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:49,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:51:49,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:49,363 INFO L225 Difference]: With dead ends: 619 [2020-10-12 20:51:49,363 INFO L226 Difference]: Without dead ends: 324 [2020-10-12 20:51:49,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-12 20:51:49,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 319. [2020-10-12 20:51:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 20:51:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 486 transitions. [2020-10-12 20:51:49,380 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 486 transitions. Word has length 82 [2020-10-12 20:51:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:49,381 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 486 transitions. [2020-10-12 20:51:49,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 486 transitions. [2020-10-12 20:51:49,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:51:49,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:49,383 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:49,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:51:49,383 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:49,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:49,383 INFO L82 PathProgramCache]: Analyzing trace with hash 905193314, now seen corresponding path program 1 times [2020-10-12 20:51:49,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:49,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649451533] [2020-10-12 20:51:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:50,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:50,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:51:50,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:51:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-12 20:51:50,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:51:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:51:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:51:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:50,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:50,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:50,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:50,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:50,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:50,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:51:50,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649451533] [2020-10-12 20:51:50,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:50,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:50,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063399818] [2020-10-12 20:51:50,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:50,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:50,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:50,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:50,231 INFO L87 Difference]: Start difference. First operand 319 states and 486 transitions. Second operand 5 states. [2020-10-12 20:51:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:50,854 INFO L93 Difference]: Finished difference Result 532 states and 798 transitions. [2020-10-12 20:51:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:50,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:51:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:50,857 INFO L225 Difference]: With dead ends: 532 [2020-10-12 20:51:50,857 INFO L226 Difference]: Without dead ends: 377 [2020-10-12 20:51:50,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-12 20:51:50,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 319. [2020-10-12 20:51:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 20:51:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 484 transitions. [2020-10-12 20:51:50,872 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 484 transitions. Word has length 82 [2020-10-12 20:51:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:50,872 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 484 transitions. [2020-10-12 20:51:50,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 484 transitions. [2020-10-12 20:51:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 20:51:50,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:50,874 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:50,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:51:50,874 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:50,874 INFO L82 PathProgramCache]: Analyzing trace with hash 872119817, now seen corresponding path program 1 times [2020-10-12 20:51:50,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:50,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72994791] [2020-10-12 20:51:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:51,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:55,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:55,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:51:55,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:51:55,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4337 [2020-10-12 20:51:55,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:51:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:51:55,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:55,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:55,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:55,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:55,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:55,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:55,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:51:55,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72994791] [2020-10-12 20:51:55,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:55,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:55,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397191051] [2020-10-12 20:51:55,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:55,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:55,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:55,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:55,293 INFO L87 Difference]: Start difference. First operand 319 states and 484 transitions. Second operand 5 states. [2020-10-12 20:51:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:55,836 INFO L93 Difference]: Finished difference Result 619 states and 945 transitions. [2020-10-12 20:51:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:55,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-12 20:51:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:55,839 INFO L225 Difference]: With dead ends: 619 [2020-10-12 20:51:55,839 INFO L226 Difference]: Without dead ends: 324 [2020-10-12 20:51:55,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-12 20:51:55,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 319. [2020-10-12 20:51:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 20:51:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 483 transitions. [2020-10-12 20:51:55,852 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 483 transitions. Word has length 83 [2020-10-12 20:51:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:55,852 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 483 transitions. [2020-10-12 20:51:55,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 483 transitions. [2020-10-12 20:51:55,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 20:51:55,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:55,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:55,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:51:55,854 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:55,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:55,855 INFO L82 PathProgramCache]: Analyzing trace with hash 706002431, now seen corresponding path program 1 times [2020-10-12 20:51:55,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:55,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535432621] [2020-10-12 20:51:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:55,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:55,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:56,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:56,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:56,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:51:56,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:51:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-12 20:51:56,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:51:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:51:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:51:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:56,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:56,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:56,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:51:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:51:56,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535432621] [2020-10-12 20:51:56,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:56,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:56,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323634498] [2020-10-12 20:51:56,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:56,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:56,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:56,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:56,523 INFO L87 Difference]: Start difference. First operand 319 states and 483 transitions. Second operand 5 states. [2020-10-12 20:51:57,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:57,277 INFO L93 Difference]: Finished difference Result 587 states and 891 transitions. [2020-10-12 20:51:57,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:57,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-12 20:51:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:57,281 INFO L225 Difference]: With dead ends: 587 [2020-10-12 20:51:57,281 INFO L226 Difference]: Without dead ends: 432 [2020-10-12 20:51:57,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-12 20:51:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 362. [2020-10-12 20:51:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-10-12 20:51:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 563 transitions. [2020-10-12 20:51:57,293 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 563 transitions. Word has length 83 [2020-10-12 20:51:57,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:57,294 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 563 transitions. [2020-10-12 20:51:57,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 563 transitions. [2020-10-12 20:51:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 20:51:57,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:57,295 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:57,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:51:57,296 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:57,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:57,296 INFO L82 PathProgramCache]: Analyzing trace with hash -757477990, now seen corresponding path program 1 times [2020-10-12 20:51:57,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:57,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262499747] [2020-10-12 20:51:57,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:57,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:57,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:57,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:57,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:51:57,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:57,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-12 20:51:57,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:51:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:51:57,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:51:57,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:57,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:57,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:57,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:57,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:57,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:51:57,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262499747] [2020-10-12 20:51:57,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:57,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:57,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109516028] [2020-10-12 20:51:57,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:57,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:57,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:57,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:57,709 INFO L87 Difference]: Start difference. First operand 362 states and 563 transitions. Second operand 5 states. [2020-10-12 20:51:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:58,579 INFO L93 Difference]: Finished difference Result 763 states and 1189 transitions. [2020-10-12 20:51:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:58,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-12 20:51:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:58,582 INFO L225 Difference]: With dead ends: 763 [2020-10-12 20:51:58,582 INFO L226 Difference]: Without dead ends: 565 [2020-10-12 20:51:58,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-12 20:51:58,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 404. [2020-10-12 20:51:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-12 20:51:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 640 transitions. [2020-10-12 20:51:58,597 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 640 transitions. Word has length 83 [2020-10-12 20:51:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:58,597 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 640 transitions. [2020-10-12 20:51:58,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 640 transitions. [2020-10-12 20:51:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 20:51:58,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:58,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:58,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:51:58,599 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:58,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:58,600 INFO L82 PathProgramCache]: Analyzing trace with hash 2112900724, now seen corresponding path program 1 times [2020-10-12 20:51:58,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:58,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337561703] [2020-10-12 20:51:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:58,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:58,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:59,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:59,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:03,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:03,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:52:03,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:52:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:52:03,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:52:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:52:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:52:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:03,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:03,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:03,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:03,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:03,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:03,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:03,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337561703] [2020-10-12 20:52:03,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:03,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:03,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127624630] [2020-10-12 20:52:03,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:03,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:03,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:03,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:03,696 INFO L87 Difference]: Start difference. First operand 404 states and 640 transitions. Second operand 5 states. [2020-10-12 20:52:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:04,303 INFO L93 Difference]: Finished difference Result 833 states and 1315 transitions. [2020-10-12 20:52:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:04,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-12 20:52:04,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:04,306 INFO L225 Difference]: With dead ends: 833 [2020-10-12 20:52:04,307 INFO L226 Difference]: Without dead ends: 442 [2020-10-12 20:52:04,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-12 20:52:04,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 413. [2020-10-12 20:52:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-10-12 20:52:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 649 transitions. [2020-10-12 20:52:04,330 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 649 transitions. Word has length 84 [2020-10-12 20:52:04,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:04,331 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 649 transitions. [2020-10-12 20:52:04,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 649 transitions. [2020-10-12 20:52:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 20:52:04,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:04,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:04,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:52:04,333 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:04,333 INFO L82 PathProgramCache]: Analyzing trace with hash 191287073, now seen corresponding path program 1 times [2020-10-12 20:52:04,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:04,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760911665] [2020-10-12 20:52:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:04,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:04,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:52:05,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-10-12 20:52:05,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:52:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 20:52:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:05,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:05,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:05,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:05,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:05,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:05,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:52:05,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760911665] [2020-10-12 20:52:05,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:05,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:05,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518730313] [2020-10-12 20:52:05,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:05,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:05,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:05,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:05,157 INFO L87 Difference]: Start difference. First operand 413 states and 649 transitions. Second operand 5 states. [2020-10-12 20:52:05,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:05,850 INFO L93 Difference]: Finished difference Result 728 states and 1140 transitions. [2020-10-12 20:52:05,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:05,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-12 20:52:05,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:05,855 INFO L225 Difference]: With dead ends: 728 [2020-10-12 20:52:05,855 INFO L226 Difference]: Without dead ends: 518 [2020-10-12 20:52:05,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-12 20:52:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 455. [2020-10-12 20:52:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-12 20:52:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 727 transitions. [2020-10-12 20:52:05,869 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 727 transitions. Word has length 84 [2020-10-12 20:52:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:05,870 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 727 transitions. [2020-10-12 20:52:05,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 727 transitions. [2020-10-12 20:52:05,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 20:52:05,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:05,871 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:05,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:52:05,872 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:05,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:05,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2068034278, now seen corresponding path program 1 times [2020-10-12 20:52:05,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:05,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048092803] [2020-10-12 20:52:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:05,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:06,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:52:06,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-12 20:52:06,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:52:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:52:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:06,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:06,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:06,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:06,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:06,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:06,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048092803] [2020-10-12 20:52:06,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:06,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:06,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184972912] [2020-10-12 20:52:06,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:06,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:06,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:06,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:06,281 INFO L87 Difference]: Start difference. First operand 455 states and 727 transitions. Second operand 5 states. [2020-10-12 20:52:06,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:06,830 INFO L93 Difference]: Finished difference Result 913 states and 1461 transitions. [2020-10-12 20:52:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:06,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-12 20:52:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:06,835 INFO L225 Difference]: With dead ends: 913 [2020-10-12 20:52:06,835 INFO L226 Difference]: Without dead ends: 482 [2020-10-12 20:52:06,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:06,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-12 20:52:06,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 455. [2020-10-12 20:52:06,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-12 20:52:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 725 transitions. [2020-10-12 20:52:06,849 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 725 transitions. Word has length 84 [2020-10-12 20:52:06,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:06,849 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 725 transitions. [2020-10-12 20:52:06,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:06,850 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 725 transitions. [2020-10-12 20:52:06,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:52:06,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:06,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:06,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:52:06,851 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:06,852 INFO L82 PathProgramCache]: Analyzing trace with hash 584565294, now seen corresponding path program 1 times [2020-10-12 20:52:06,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:06,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269094983] [2020-10-12 20:52:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:07,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:11,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:11,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:11,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:52:11,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:52:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:52:11,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:52:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:52:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:52:11,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:11,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:11,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:11,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:11,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:11,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269094983] [2020-10-12 20:52:11,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:11,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:11,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046745178] [2020-10-12 20:52:11,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:11,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:11,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:11,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:11,990 INFO L87 Difference]: Start difference. First operand 455 states and 725 transitions. Second operand 5 states. [2020-10-12 20:52:12,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:12,800 INFO L93 Difference]: Finished difference Result 1069 states and 1685 transitions. [2020-10-12 20:52:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:12,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-12 20:52:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:12,805 INFO L225 Difference]: With dead ends: 1069 [2020-10-12 20:52:12,805 INFO L226 Difference]: Without dead ends: 618 [2020-10-12 20:52:12,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-12 20:52:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 471. [2020-10-12 20:52:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-12 20:52:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 746 transitions. [2020-10-12 20:52:12,820 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 746 transitions. Word has length 86 [2020-10-12 20:52:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:12,821 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 746 transitions. [2020-10-12 20:52:12,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 746 transitions. [2020-10-12 20:52:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:52:12,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:12,823 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:12,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:52:12,823 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:12,823 INFO L82 PathProgramCache]: Analyzing trace with hash 539698848, now seen corresponding path program 1 times [2020-10-12 20:52:12,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:12,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774227001] [2020-10-12 20:52:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:13,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:14,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:14,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:52:14,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:14,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2005 [2020-10-12 20:52:14,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:14,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:14,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:14,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:52:14,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:14,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:14,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:14,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:14,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:14,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 20:52:14,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774227001] [2020-10-12 20:52:14,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:14,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:14,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456873189] [2020-10-12 20:52:14,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:14,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:14,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:14,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:14,898 INFO L87 Difference]: Start difference. First operand 471 states and 746 transitions. Second operand 5 states. [2020-10-12 20:52:15,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:15,414 INFO L93 Difference]: Finished difference Result 922 states and 1469 transitions. [2020-10-12 20:52:15,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:15,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-12 20:52:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:15,417 INFO L225 Difference]: With dead ends: 922 [2020-10-12 20:52:15,418 INFO L226 Difference]: Without dead ends: 475 [2020-10-12 20:52:15,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:15,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-10-12 20:52:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 471. [2020-10-12 20:52:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-12 20:52:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 745 transitions. [2020-10-12 20:52:15,434 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 745 transitions. Word has length 86 [2020-10-12 20:52:15,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:15,435 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 745 transitions. [2020-10-12 20:52:15,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:15,435 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 745 transitions. [2020-10-12 20:52:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 20:52:15,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:15,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:15,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:52:15,437 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:15,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:15,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1918634743, now seen corresponding path program 1 times [2020-10-12 20:52:15,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:15,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443092283] [2020-10-12 20:52:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:15,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:16,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:16,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 20:52:16,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-12 20:52:16,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 20:52:16,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:16,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:16,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:16,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:16,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:16,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:16,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:16,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:16,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:16,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443092283] [2020-10-12 20:52:16,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:16,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:16,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067255] [2020-10-12 20:52:16,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:16,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:16,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:16,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:16,140 INFO L87 Difference]: Start difference. First operand 471 states and 745 transitions. Second operand 5 states. [2020-10-12 20:52:17,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:17,079 INFO L93 Difference]: Finished difference Result 940 states and 1482 transitions. [2020-10-12 20:52:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:17,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-12 20:52:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:17,084 INFO L225 Difference]: With dead ends: 940 [2020-10-12 20:52:17,084 INFO L226 Difference]: Without dead ends: 674 [2020-10-12 20:52:17,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2020-10-12 20:52:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 503. [2020-10-12 20:52:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-10-12 20:52:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 797 transitions. [2020-10-12 20:52:17,100 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 797 transitions. Word has length 91 [2020-10-12 20:52:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:17,100 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 797 transitions. [2020-10-12 20:52:17,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 797 transitions. [2020-10-12 20:52:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 20:52:17,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:17,102 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:17,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:52:17,102 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:17,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:17,103 INFO L82 PathProgramCache]: Analyzing trace with hash 326944711, now seen corresponding path program 1 times [2020-10-12 20:52:17,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:17,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820423518] [2020-10-12 20:52:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:17,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:17,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:17,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 20:52:17,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-12 20:52:17,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:52:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:17,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:17,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:17,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:17,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:17,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:52:17,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:17,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:17,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:17,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:17,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820423518] [2020-10-12 20:52:17,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:17,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:17,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551424412] [2020-10-12 20:52:17,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:17,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:17,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:17,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:17,619 INFO L87 Difference]: Start difference. First operand 503 states and 797 transitions. Second operand 5 states. [2020-10-12 20:52:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:18,298 INFO L93 Difference]: Finished difference Result 1096 states and 1737 transitions. [2020-10-12 20:52:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:18,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-12 20:52:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:18,306 INFO L225 Difference]: With dead ends: 1096 [2020-10-12 20:52:18,306 INFO L226 Difference]: Without dead ends: 617 [2020-10-12 20:52:18,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:18,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-12 20:52:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 551. [2020-10-12 20:52:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-10-12 20:52:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 881 transitions. [2020-10-12 20:52:18,323 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 881 transitions. Word has length 91 [2020-10-12 20:52:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:18,324 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 881 transitions. [2020-10-12 20:52:18,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 881 transitions. [2020-10-12 20:52:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 20:52:18,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:18,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:18,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:52:18,326 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:18,326 INFO L82 PathProgramCache]: Analyzing trace with hash 431913303, now seen corresponding path program 1 times [2020-10-12 20:52:18,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:18,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766770142] [2020-10-12 20:52:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:18,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:18,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:18,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 20:52:18,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-12 20:52:18,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:52:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:18,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:18,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:18,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:18,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:18,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:18,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:18,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:18,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:19,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766770142] [2020-10-12 20:52:19,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:19,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:19,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575770637] [2020-10-12 20:52:19,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:19,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:19,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:19,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:19,002 INFO L87 Difference]: Start difference. First operand 551 states and 881 transitions. Second operand 5 states. [2020-10-12 20:52:19,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:19,887 INFO L93 Difference]: Finished difference Result 1022 states and 1626 transitions. [2020-10-12 20:52:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:19,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-12 20:52:19,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:19,891 INFO L225 Difference]: With dead ends: 1022 [2020-10-12 20:52:19,891 INFO L226 Difference]: Without dead ends: 714 [2020-10-12 20:52:19,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-12 20:52:19,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 576. [2020-10-12 20:52:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-10-12 20:52:19,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 931 transitions. [2020-10-12 20:52:19,907 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 931 transitions. Word has length 92 [2020-10-12 20:52:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:19,907 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 931 transitions. [2020-10-12 20:52:19,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:19,907 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 931 transitions. [2020-10-12 20:52:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 20:52:19,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:19,909 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:19,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:52:19,909 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:19,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1293619181, now seen corresponding path program 1 times [2020-10-12 20:52:19,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:19,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410185916] [2020-10-12 20:52:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:19,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:20,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:20,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:20,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 20:52:20,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-12 20:52:20,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:52:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:52:20,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:20,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:20,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:20,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:20,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:20,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:52:20,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:20,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:20,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:20,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:20,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 20:52:20,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410185916] [2020-10-12 20:52:20,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:20,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:20,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871706289] [2020-10-12 20:52:20,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:20,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:20,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:20,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:20,930 INFO L87 Difference]: Start difference. First operand 576 states and 931 transitions. Second operand 5 states. [2020-10-12 20:52:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:21,443 INFO L93 Difference]: Finished difference Result 916 states and 1471 transitions. [2020-10-12 20:52:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:21,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-12 20:52:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:21,447 INFO L225 Difference]: With dead ends: 916 [2020-10-12 20:52:21,447 INFO L226 Difference]: Without dead ends: 610 [2020-10-12 20:52:21,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-10-12 20:52:21,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 576. [2020-10-12 20:52:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-10-12 20:52:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 929 transitions. [2020-10-12 20:52:21,463 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 929 transitions. Word has length 98 [2020-10-12 20:52:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:21,463 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 929 transitions. [2020-10-12 20:52:21,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:21,463 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 929 transitions. [2020-10-12 20:52:21,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 20:52:21,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:21,465 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:21,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:52:21,465 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:21,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:21,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1389095485, now seen corresponding path program 1 times [2020-10-12 20:52:21,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:21,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642243979] [2020-10-12 20:52:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:22,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:22,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:24,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:24,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:52:24,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:24,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3302 [2020-10-12 20:52:24,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:52:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:52:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:24,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:24,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:24,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:24,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:24,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 20:52:24,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642243979] [2020-10-12 20:52:24,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:24,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:24,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713870309] [2020-10-12 20:52:24,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:24,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:24,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:24,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:24,887 INFO L87 Difference]: Start difference. First operand 576 states and 929 transitions. Second operand 5 states. [2020-10-12 20:52:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:25,597 INFO L93 Difference]: Finished difference Result 1339 states and 2155 transitions. [2020-10-12 20:52:25,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:25,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-12 20:52:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:25,602 INFO L225 Difference]: With dead ends: 1339 [2020-10-12 20:52:25,602 INFO L226 Difference]: Without dead ends: 787 [2020-10-12 20:52:25,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:25,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-10-12 20:52:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 611. [2020-10-12 20:52:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-12 20:52:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 981 transitions. [2020-10-12 20:52:25,620 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 981 transitions. Word has length 100 [2020-10-12 20:52:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:25,620 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 981 transitions. [2020-10-12 20:52:25,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 981 transitions. [2020-10-12 20:52:25,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 20:52:25,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:25,623 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:25,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:52:25,623 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:25,623 INFO L82 PathProgramCache]: Analyzing trace with hash 142614359, now seen corresponding path program 1 times [2020-10-12 20:52:25,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:25,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687367433] [2020-10-12 20:52:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:25,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:25,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:25,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:30,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:30,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 20:52:30,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:52:30,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:52:30,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:52:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:52:30,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:30,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:30,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:30,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:30,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:52:30,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:30,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687367433] [2020-10-12 20:52:30,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:30,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:30,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470028228] [2020-10-12 20:52:30,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:30,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:30,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:30,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:30,731 INFO L87 Difference]: Start difference. First operand 611 states and 981 transitions. Second operand 5 states. [2020-10-12 20:52:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:31,472 INFO L93 Difference]: Finished difference Result 1335 states and 2129 transitions. [2020-10-12 20:52:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:31,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 20:52:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:31,475 INFO L225 Difference]: With dead ends: 1335 [2020-10-12 20:52:31,475 INFO L226 Difference]: Without dead ends: 727 [2020-10-12 20:52:31,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:31,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-10-12 20:52:31,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 596. [2020-10-12 20:52:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-10-12 20:52:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 955 transitions. [2020-10-12 20:52:31,493 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 955 transitions. Word has length 106 [2020-10-12 20:52:31,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:31,493 INFO L479 AbstractCegarLoop]: Abstraction has 596 states and 955 transitions. [2020-10-12 20:52:31,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 955 transitions. [2020-10-12 20:52:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 20:52:31,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:31,495 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:31,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:52:31,495 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:31,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:31,496 INFO L82 PathProgramCache]: Analyzing trace with hash 703314137, now seen corresponding path program 1 times [2020-10-12 20:52:31,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:31,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064192193] [2020-10-12 20:52:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:31,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:31,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:36,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 20:52:36,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:52:36,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:52:36,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:52:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:52:36,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:36,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:36,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:36,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:36,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:52:36,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:36,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064192193] [2020-10-12 20:52:36,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:36,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:36,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148963681] [2020-10-12 20:52:36,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:36,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:36,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:36,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:36,612 INFO L87 Difference]: Start difference. First operand 596 states and 955 transitions. Second operand 5 states. [2020-10-12 20:52:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:37,276 INFO L93 Difference]: Finished difference Result 1233 states and 1966 transitions. [2020-10-12 20:52:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:37,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 20:52:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:37,280 INFO L225 Difference]: With dead ends: 1233 [2020-10-12 20:52:37,280 INFO L226 Difference]: Without dead ends: 640 [2020-10-12 20:52:37,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-12 20:52:37,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 596. [2020-10-12 20:52:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-10-12 20:52:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 953 transitions. [2020-10-12 20:52:37,295 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 953 transitions. Word has length 106 [2020-10-12 20:52:37,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:37,296 INFO L479 AbstractCegarLoop]: Abstraction has 596 states and 953 transitions. [2020-10-12 20:52:37,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:37,296 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 953 transitions. [2020-10-12 20:52:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:52:37,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:37,298 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, 1, 1, 1] [2020-10-12 20:52:37,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:52:37,298 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:37,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:37,298 INFO L82 PathProgramCache]: Analyzing trace with hash 360095476, now seen corresponding path program 1 times [2020-10-12 20:52:37,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:37,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452976676] [2020-10-12 20:52:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:38,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:38,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:52:38,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1164 [2020-10-12 20:52:38,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:38,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:38,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:38,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:52:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:38,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:38,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:38,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:38,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:38,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:38,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:38,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:38,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:38,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:38,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452976676] [2020-10-12 20:52:38,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:38,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:38,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821997406] [2020-10-12 20:52:38,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:38,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:38,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:38,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:38,544 INFO L87 Difference]: Start difference. First operand 596 states and 953 transitions. Second operand 5 states. [2020-10-12 20:52:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:39,296 INFO L93 Difference]: Finished difference Result 1300 states and 2071 transitions. [2020-10-12 20:52:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:39,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:52:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:39,300 INFO L225 Difference]: With dead ends: 1300 [2020-10-12 20:52:39,300 INFO L226 Difference]: Without dead ends: 727 [2020-10-12 20:52:39,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-10-12 20:52:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 620. [2020-10-12 20:52:39,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-12 20:52:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 992 transitions. [2020-10-12 20:52:39,316 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 992 transitions. Word has length 113 [2020-10-12 20:52:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:39,316 INFO L479 AbstractCegarLoop]: Abstraction has 620 states and 992 transitions. [2020-10-12 20:52:39,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 992 transitions. [2020-10-12 20:52:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:52:39,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:39,318 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, 1, 1, 1] [2020-10-12 20:52:39,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:52:39,319 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:39,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:39,319 INFO L82 PathProgramCache]: Analyzing trace with hash -371871950, now seen corresponding path program 1 times [2020-10-12 20:52:39,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:39,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008329784] [2020-10-12 20:52:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:39,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:39,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:39,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:39,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:39,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:39,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:52:39,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:39,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-12 20:52:39,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:52:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:52:39,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:39,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:39,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:39,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:39,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:39,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:39,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:52:39,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008329784] [2020-10-12 20:52:39,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:39,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:39,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507440066] [2020-10-12 20:52:39,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:39,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:39,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:39,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:39,812 INFO L87 Difference]: Start difference. First operand 620 states and 992 transitions. Second operand 5 states. [2020-10-12 20:52:40,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:40,646 INFO L93 Difference]: Finished difference Result 1152 states and 1831 transitions. [2020-10-12 20:52:40,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:40,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:52:40,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:40,650 INFO L225 Difference]: With dead ends: 1152 [2020-10-12 20:52:40,650 INFO L226 Difference]: Without dead ends: 819 [2020-10-12 20:52:40,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-10-12 20:52:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 650. [2020-10-12 20:52:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-10-12 20:52:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1042 transitions. [2020-10-12 20:52:40,665 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1042 transitions. Word has length 113 [2020-10-12 20:52:40,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:40,666 INFO L479 AbstractCegarLoop]: Abstraction has 650 states and 1042 transitions. [2020-10-12 20:52:40,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1042 transitions. [2020-10-12 20:52:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:52:40,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:40,668 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:40,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:52:40,668 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:40,668 INFO L82 PathProgramCache]: Analyzing trace with hash -769575358, now seen corresponding path program 1 times [2020-10-12 20:52:40,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:40,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175818228] [2020-10-12 20:52:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:40,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:41,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:45,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:45,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:52:45,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:52:45,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-12 20:52:45,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:52:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 20:52:45,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:46,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:46,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:46,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:46,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:52:46,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:46,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:46,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:46,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:46,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 20:52:46,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175818228] [2020-10-12 20:52:46,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:46,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:52:46,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205024459] [2020-10-12 20:52:46,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:52:46,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:46,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:52:46,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:52:46,384 INFO L87 Difference]: Start difference. First operand 650 states and 1042 transitions. Second operand 9 states. [2020-10-12 20:52:48,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:48,284 INFO L93 Difference]: Finished difference Result 1685 states and 2700 transitions. [2020-10-12 20:52:48,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:52:48,284 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 114 [2020-10-12 20:52:48,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:48,291 INFO L225 Difference]: With dead ends: 1685 [2020-10-12 20:52:48,291 INFO L226 Difference]: Without dead ends: 1337 [2020-10-12 20:52:48,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:52:48,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-10-12 20:52:48,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 729. [2020-10-12 20:52:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-12 20:52:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1168 transitions. [2020-10-12 20:52:48,313 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1168 transitions. Word has length 114 [2020-10-12 20:52:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:48,313 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 1168 transitions. [2020-10-12 20:52:48,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:52:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1168 transitions. [2020-10-12 20:52:48,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:52:48,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:48,316 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, 1, 1, 1, 1] [2020-10-12 20:52:48,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:52:48,317 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:48,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1136919630, now seen corresponding path program 1 times [2020-10-12 20:52:48,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:48,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622427567] [2020-10-12 20:52:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:48,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:48,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:49,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:49,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:52:49,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-12 20:52:49,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:52:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:52:49,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:49,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:49,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:49,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:49,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:52:49,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622427567] [2020-10-12 20:52:49,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:49,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:49,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355473838] [2020-10-12 20:52:49,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:49,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:49,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:49,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:49,233 INFO L87 Difference]: Start difference. First operand 729 states and 1168 transitions. Second operand 5 states. [2020-10-12 20:52:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:49,911 INFO L93 Difference]: Finished difference Result 1527 states and 2442 transitions. [2020-10-12 20:52:49,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:49,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 20:52:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:49,915 INFO L225 Difference]: With dead ends: 1527 [2020-10-12 20:52:49,915 INFO L226 Difference]: Without dead ends: 821 [2020-10-12 20:52:49,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-10-12 20:52:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 751. [2020-10-12 20:52:49,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-12 20:52:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1208 transitions. [2020-10-12 20:52:49,937 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1208 transitions. Word has length 114 [2020-10-12 20:52:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:49,937 INFO L479 AbstractCegarLoop]: Abstraction has 751 states and 1208 transitions. [2020-10-12 20:52:49,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1208 transitions. [2020-10-12 20:52:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:49,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:49,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:49,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:52:49,939 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1683995454, now seen corresponding path program 1 times [2020-10-12 20:52:49,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:49,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352901103] [2020-10-12 20:52:49,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:49,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:49,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:50,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:50,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:51,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:51,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1596 [2020-10-12 20:52:51,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:52:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:51,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:51,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:51,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:51,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:52:51,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:51,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352901103] [2020-10-12 20:52:51,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:51,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:51,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594901306] [2020-10-12 20:52:51,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:51,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:51,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:51,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:51,619 INFO L87 Difference]: Start difference. First operand 751 states and 1208 transitions. Second operand 5 states. [2020-10-12 20:52:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:52,383 INFO L93 Difference]: Finished difference Result 1616 states and 2592 transitions. [2020-10-12 20:52:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:52,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:52:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:52,386 INFO L225 Difference]: With dead ends: 1616 [2020-10-12 20:52:52,386 INFO L226 Difference]: Without dead ends: 888 [2020-10-12 20:52:52,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-10-12 20:52:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 759. [2020-10-12 20:52:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-10-12 20:52:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1222 transitions. [2020-10-12 20:52:52,403 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1222 transitions. Word has length 116 [2020-10-12 20:52:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:52,404 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 1222 transitions. [2020-10-12 20:52:52,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1222 transitions. [2020-10-12 20:52:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:52:52,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:52,406 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:52,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:52:52,406 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:52,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:52,407 INFO L82 PathProgramCache]: Analyzing trace with hash -2043615815, now seen corresponding path program 1 times [2020-10-12 20:52:52,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:52,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703182374] [2020-10-12 20:52:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:53,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 20:52:53,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-12 20:52:53,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:52:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:53,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:53,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:53,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:53,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:53,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703182374] [2020-10-12 20:52:53,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:53,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:53,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001772744] [2020-10-12 20:52:53,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:53,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:53,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:53,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:53,635 INFO L87 Difference]: Start difference. First operand 759 states and 1222 transitions. Second operand 5 states. [2020-10-12 20:52:54,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:54,375 INFO L93 Difference]: Finished difference Result 1608 states and 2578 transitions. [2020-10-12 20:52:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:54,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-12 20:52:54,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:54,379 INFO L225 Difference]: With dead ends: 1608 [2020-10-12 20:52:54,379 INFO L226 Difference]: Without dead ends: 872 [2020-10-12 20:52:54,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:54,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-10-12 20:52:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 761. [2020-10-12 20:52:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-10-12 20:52:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1224 transitions. [2020-10-12 20:52:54,399 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1224 transitions. Word has length 117 [2020-10-12 20:52:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:54,399 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 1224 transitions. [2020-10-12 20:52:54,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:54,399 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1224 transitions. [2020-10-12 20:52:54,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:52:54,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:54,401 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:54,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:52:54,401 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:54,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:54,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2063301983, now seen corresponding path program 1 times [2020-10-12 20:52:54,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:54,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792724302] [2020-10-12 20:52:54,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:55,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:55,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:55,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:55,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:52:55,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:55,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1372 [2020-10-12 20:52:55,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:55,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:52:55,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:55,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:55,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:55,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:55,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:55,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:55,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:55,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792724302] [2020-10-12 20:52:55,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:55,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:55,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076967118] [2020-10-12 20:52:55,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:55,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:55,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:55,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:55,867 INFO L87 Difference]: Start difference. First operand 761 states and 1224 transitions. Second operand 5 states. [2020-10-12 20:52:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:56,622 INFO L93 Difference]: Finished difference Result 1610 states and 2578 transitions. [2020-10-12 20:52:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:56,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:52:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:56,627 INFO L225 Difference]: With dead ends: 1610 [2020-10-12 20:52:56,627 INFO L226 Difference]: Without dead ends: 872 [2020-10-12 20:52:56,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:56,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-10-12 20:52:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 761. [2020-10-12 20:52:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-10-12 20:52:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1222 transitions. [2020-10-12 20:52:56,643 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1222 transitions. Word has length 119 [2020-10-12 20:52:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:56,643 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 1222 transitions. [2020-10-12 20:52:56,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1222 transitions. [2020-10-12 20:52:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:52:56,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:56,645 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:56,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:52:56,645 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:56,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:56,646 INFO L82 PathProgramCache]: Analyzing trace with hash -252577368, now seen corresponding path program 1 times [2020-10-12 20:52:56,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:56,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961609706] [2020-10-12 20:52:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:57,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:57,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:52:57,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-12 20:52:57,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:52:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:58,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:58,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:58,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:58,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:58,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:58,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961609706] [2020-10-12 20:52:58,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:58,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:58,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105861308] [2020-10-12 20:52:58,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:58,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:58,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:58,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:58,028 INFO L87 Difference]: Start difference. First operand 761 states and 1222 transitions. Second operand 5 states. [2020-10-12 20:52:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:58,796 INFO L93 Difference]: Finished difference Result 1606 states and 2568 transitions. [2020-10-12 20:52:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:58,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:52:58,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:58,802 INFO L225 Difference]: With dead ends: 1606 [2020-10-12 20:52:58,802 INFO L226 Difference]: Without dead ends: 868 [2020-10-12 20:52:58,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2020-10-12 20:52:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 761. [2020-10-12 20:52:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-10-12 20:52:58,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1220 transitions. [2020-10-12 20:52:58,818 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1220 transitions. Word has length 120 [2020-10-12 20:52:58,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:58,818 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 1220 transitions. [2020-10-12 20:52:58,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:58,818 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1220 transitions. [2020-10-12 20:52:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:52:58,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:58,820 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:58,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:52:58,821 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:58,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:58,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1137856109, now seen corresponding path program 1 times [2020-10-12 20:52:58,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:58,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413331287] [2020-10-12 20:52:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:58,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:59,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:59,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:59,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:52:59,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:59,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-12 20:52:59,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:52:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:52:59,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:59,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:59,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:59,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:59,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:52:59,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:59,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413331287] [2020-10-12 20:52:59,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:59,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:59,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034487906] [2020-10-12 20:52:59,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:59,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:59,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:59,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:59,246 INFO L87 Difference]: Start difference. First operand 761 states and 1220 transitions. Second operand 5 states. [2020-10-12 20:52:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:59,977 INFO L93 Difference]: Finished difference Result 1598 states and 2554 transitions. [2020-10-12 20:52:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:59,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:52:59,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:59,982 INFO L225 Difference]: With dead ends: 1598 [2020-10-12 20:52:59,983 INFO L226 Difference]: Without dead ends: 860 [2020-10-12 20:52:59,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:59,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2020-10-12 20:53:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 767. [2020-10-12 20:53:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-10-12 20:53:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1230 transitions. [2020-10-12 20:53:00,004 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1230 transitions. Word has length 121 [2020-10-12 20:53:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:00,004 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 1230 transitions. [2020-10-12 20:53:00,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1230 transitions. [2020-10-12 20:53:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:53:00,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:00,006 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:00,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:53:00,006 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:00,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1831405957, now seen corresponding path program 1 times [2020-10-12 20:53:00,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:00,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114990127] [2020-10-12 20:53:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:00,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:01,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:01,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:53:01,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1179 [2020-10-12 20:53:01,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:53:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:01,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:01,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:01,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:01,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:01,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:53:01,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:01,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:01,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114990127] [2020-10-12 20:53:01,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:01,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:01,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882200661] [2020-10-12 20:53:01,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:01,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:01,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:01,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:01,278 INFO L87 Difference]: Start difference. First operand 767 states and 1230 transitions. Second operand 5 states. [2020-10-12 20:53:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:02,002 INFO L93 Difference]: Finished difference Result 1604 states and 2562 transitions. [2020-10-12 20:53:02,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:02,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:53:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:02,011 INFO L225 Difference]: With dead ends: 1604 [2020-10-12 20:53:02,011 INFO L226 Difference]: Without dead ends: 860 [2020-10-12 20:53:02,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2020-10-12 20:53:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 769. [2020-10-12 20:53:02,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-12 20:53:02,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1232 transitions. [2020-10-12 20:53:02,033 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1232 transitions. Word has length 122 [2020-10-12 20:53:02,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:02,034 INFO L479 AbstractCegarLoop]: Abstraction has 769 states and 1232 transitions. [2020-10-12 20:53:02,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:02,034 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1232 transitions. [2020-10-12 20:53:02,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:53:02,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:02,036 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:02,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:53:02,036 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:02,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:02,036 INFO L82 PathProgramCache]: Analyzing trace with hash -902566644, now seen corresponding path program 1 times [2020-10-12 20:53:02,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:02,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862666554] [2020-10-12 20:53:02,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:02,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:02,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:02,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:07,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:07,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:53:07,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:07,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:53:07,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:07,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:07,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 20:53:07,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:53:07,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:07,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:07,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:07,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:07,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:07,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:07,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:07,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:07,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:07,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:07,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 20:53:07,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862666554] [2020-10-12 20:53:07,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:07,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:07,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846706977] [2020-10-12 20:53:07,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:07,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:07,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:07,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:07,123 INFO L87 Difference]: Start difference. First operand 769 states and 1232 transitions. Second operand 5 states. [2020-10-12 20:53:07,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:07,920 INFO L93 Difference]: Finished difference Result 1634 states and 2604 transitions. [2020-10-12 20:53:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:07,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:53:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:07,924 INFO L225 Difference]: With dead ends: 1634 [2020-10-12 20:53:07,924 INFO L226 Difference]: Without dead ends: 888 [2020-10-12 20:53:07,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-10-12 20:53:07,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 769. [2020-10-12 20:53:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-12 20:53:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1230 transitions. [2020-10-12 20:53:07,942 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1230 transitions. Word has length 123 [2020-10-12 20:53:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:07,942 INFO L479 AbstractCegarLoop]: Abstraction has 769 states and 1230 transitions. [2020-10-12 20:53:07,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1230 transitions. [2020-10-12 20:53:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:53:07,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:07,943 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:07,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:53:07,943 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:07,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:07,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1899261719, now seen corresponding path program 1 times [2020-10-12 20:53:07,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:07,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388399023] [2020-10-12 20:53:07,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:07,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:08,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:53:08,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:08,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-12 20:53:08,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:08,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:08,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:08,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:53:08,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:08,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:08,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:08,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:08,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:08,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:08,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:08,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:08,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:08,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:08,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:08,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388399023] [2020-10-12 20:53:08,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:08,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:08,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949875723] [2020-10-12 20:53:08,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:08,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:08,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:08,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:08,853 INFO L87 Difference]: Start difference. First operand 769 states and 1230 transitions. Second operand 5 states. [2020-10-12 20:53:09,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:09,585 INFO L93 Difference]: Finished difference Result 1606 states and 2558 transitions. [2020-10-12 20:53:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:09,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:53:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:09,590 INFO L225 Difference]: With dead ends: 1606 [2020-10-12 20:53:09,590 INFO L226 Difference]: Without dead ends: 860 [2020-10-12 20:53:09,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2020-10-12 20:53:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 773. [2020-10-12 20:53:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-10-12 20:53:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1236 transitions. [2020-10-12 20:53:09,607 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1236 transitions. Word has length 123 [2020-10-12 20:53:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:09,607 INFO L479 AbstractCegarLoop]: Abstraction has 773 states and 1236 transitions. [2020-10-12 20:53:09,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1236 transitions. [2020-10-12 20:53:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:53:09,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:09,609 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:09,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:53:09,609 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:09,609 INFO L82 PathProgramCache]: Analyzing trace with hash -594361705, now seen corresponding path program 1 times [2020-10-12 20:53:09,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:09,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481979754] [2020-10-12 20:53:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:09,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:10,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:10,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:10,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:10,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:53:10,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:10,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-10-12 20:53:10,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:53:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:10,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:10,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:10,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:10,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:10,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:53:10,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:10,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:10,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:10,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481979754] [2020-10-12 20:53:10,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:10,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:10,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677287998] [2020-10-12 20:53:10,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:10,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:10,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:10,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:10,815 INFO L87 Difference]: Start difference. First operand 773 states and 1236 transitions. Second operand 5 states. [2020-10-12 20:53:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:11,536 INFO L93 Difference]: Finished difference Result 1602 states and 2552 transitions. [2020-10-12 20:53:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:11,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:53:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:11,543 INFO L225 Difference]: With dead ends: 1602 [2020-10-12 20:53:11,543 INFO L226 Difference]: Without dead ends: 852 [2020-10-12 20:53:11,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:11,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-10-12 20:53:11,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 773. [2020-10-12 20:53:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-10-12 20:53:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1234 transitions. [2020-10-12 20:53:11,563 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1234 transitions. Word has length 123 [2020-10-12 20:53:11,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:11,563 INFO L479 AbstractCegarLoop]: Abstraction has 773 states and 1234 transitions. [2020-10-12 20:53:11,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:11,564 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1234 transitions. [2020-10-12 20:53:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:53:11,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:11,565 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:11,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:53:11,565 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:11,566 INFO L82 PathProgramCache]: Analyzing trace with hash 705840815, now seen corresponding path program 1 times [2020-10-12 20:53:11,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:11,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031976101] [2020-10-12 20:53:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:16,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:53:16,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:53:16,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 20:53:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:53:16,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:16,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:16,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:16,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:16,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:16,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 20:53:16,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031976101] [2020-10-12 20:53:16,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:16,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:16,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222567620] [2020-10-12 20:53:16,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:16,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:16,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:16,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:16,654 INFO L87 Difference]: Start difference. First operand 773 states and 1234 transitions. Second operand 5 states. [2020-10-12 20:53:17,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:17,448 INFO L93 Difference]: Finished difference Result 1622 states and 2574 transitions. [2020-10-12 20:53:17,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:17,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 20:53:17,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:17,453 INFO L225 Difference]: With dead ends: 1622 [2020-10-12 20:53:17,453 INFO L226 Difference]: Without dead ends: 872 [2020-10-12 20:53:17,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-10-12 20:53:17,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 773. [2020-10-12 20:53:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-10-12 20:53:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1232 transitions. [2020-10-12 20:53:17,471 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1232 transitions. Word has length 124 [2020-10-12 20:53:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:17,472 INFO L479 AbstractCegarLoop]: Abstraction has 773 states and 1232 transitions. [2020-10-12 20:53:17,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1232 transitions. [2020-10-12 20:53:17,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:53:17,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:17,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:17,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:53:17,473 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:17,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1324184905, now seen corresponding path program 1 times [2020-10-12 20:53:17,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:17,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171302723] [2020-10-12 20:53:17,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:18,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:18,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:53:18,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-10-12 20:53:18,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:53:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:18,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:18,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:18,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:18,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:18,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:18,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:53:18,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:18,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:18,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171302723] [2020-10-12 20:53:18,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:18,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:18,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105759245] [2020-10-12 20:53:18,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:18,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:18,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:18,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:18,566 INFO L87 Difference]: Start difference. First operand 773 states and 1232 transitions. Second operand 5 states. [2020-10-12 20:53:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:19,283 INFO L93 Difference]: Finished difference Result 1598 states and 2540 transitions. [2020-10-12 20:53:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:19,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 20:53:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:19,286 INFO L225 Difference]: With dead ends: 1598 [2020-10-12 20:53:19,286 INFO L226 Difference]: Without dead ends: 848 [2020-10-12 20:53:19,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-12 20:53:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 775. [2020-10-12 20:53:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-10-12 20:53:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1234 transitions. [2020-10-12 20:53:19,302 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1234 transitions. Word has length 124 [2020-10-12 20:53:19,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:19,302 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1234 transitions. [2020-10-12 20:53:19,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1234 transitions. [2020-10-12 20:53:19,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:53:19,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:19,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:19,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:53:19,304 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:19,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1980727310, now seen corresponding path program 1 times [2020-10-12 20:53:19,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:19,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416887405] [2020-10-12 20:53:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:20,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:53:20,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:20,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-10-12 20:53:20,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:53:20,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:20,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:20,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:20,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:20,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:20,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:20,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:20,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:20,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416887405] [2020-10-12 20:53:20,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:20,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:20,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169482952] [2020-10-12 20:53:20,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:20,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:20,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:20,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:20,396 INFO L87 Difference]: Start difference. First operand 775 states and 1234 transitions. Second operand 5 states. [2020-10-12 20:53:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:21,115 INFO L93 Difference]: Finished difference Result 1600 states and 2540 transitions. [2020-10-12 20:53:21,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:21,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 20:53:21,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:21,121 INFO L225 Difference]: With dead ends: 1600 [2020-10-12 20:53:21,121 INFO L226 Difference]: Without dead ends: 848 [2020-10-12 20:53:21,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-12 20:53:21,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 777. [2020-10-12 20:53:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-10-12 20:53:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1236 transitions. [2020-10-12 20:53:21,136 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1236 transitions. Word has length 125 [2020-10-12 20:53:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:21,136 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 1236 transitions. [2020-10-12 20:53:21,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1236 transitions. [2020-10-12 20:53:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:53:21,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:21,138 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:21,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:53:21,138 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:21,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1408730923, now seen corresponding path program 1 times [2020-10-12 20:53:21,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:21,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575840302] [2020-10-12 20:53:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:21,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:26,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:26,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 20:53:26,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:53:26,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:53:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:53:26,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:26,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:26,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:26,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:26,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:26,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:26,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:26,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-12 20:53:26,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575840302] [2020-10-12 20:53:26,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:26,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:26,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427633337] [2020-10-12 20:53:26,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:26,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:26,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:26,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:26,220 INFO L87 Difference]: Start difference. First operand 777 states and 1236 transitions. Second operand 5 states. [2020-10-12 20:53:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:26,936 INFO L93 Difference]: Finished difference Result 1673 states and 2662 transitions. [2020-10-12 20:53:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:26,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-12 20:53:26,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:26,939 INFO L225 Difference]: With dead ends: 1673 [2020-10-12 20:53:26,939 INFO L226 Difference]: Without dead ends: 919 [2020-10-12 20:53:26,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2020-10-12 20:53:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 833. [2020-10-12 20:53:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-10-12 20:53:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1334 transitions. [2020-10-12 20:53:26,954 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1334 transitions. Word has length 126 [2020-10-12 20:53:26,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:26,955 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 1334 transitions. [2020-10-12 20:53:26,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1334 transitions. [2020-10-12 20:53:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:53:26,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:26,956 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:26,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:53:26,956 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:26,957 INFO L82 PathProgramCache]: Analyzing trace with hash -956772612, now seen corresponding path program 1 times [2020-10-12 20:53:26,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:26,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585280651] [2020-10-12 20:53:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:26,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:27,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 20:53:27,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-12 20:53:27,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:53:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:28,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:28,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:28,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:28,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:53:28,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:28,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:28,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585280651] [2020-10-12 20:53:28,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:28,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:28,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032086735] [2020-10-12 20:53:28,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:28,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:28,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:28,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:28,046 INFO L87 Difference]: Start difference. First operand 833 states and 1334 transitions. Second operand 5 states. [2020-10-12 20:53:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:28,755 INFO L93 Difference]: Finished difference Result 1710 states and 2732 transitions. [2020-10-12 20:53:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:28,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-12 20:53:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:28,758 INFO L225 Difference]: With dead ends: 1710 [2020-10-12 20:53:28,758 INFO L226 Difference]: Without dead ends: 900 [2020-10-12 20:53:28,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2020-10-12 20:53:28,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 835. [2020-10-12 20:53:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-12 20:53:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1336 transitions. [2020-10-12 20:53:28,774 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1336 transitions. Word has length 126 [2020-10-12 20:53:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:28,774 INFO L479 AbstractCegarLoop]: Abstraction has 835 states and 1336 transitions. [2020-10-12 20:53:28,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1336 transitions. [2020-10-12 20:53:28,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 20:53:28,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:28,775 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:28,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:53:28,776 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:28,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1703822435, now seen corresponding path program 1 times [2020-10-12 20:53:28,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:28,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756217782] [2020-10-12 20:53:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:32,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:33,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 20:53:33,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:33,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:53:33,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:53:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 20:53:33,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:34,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:34,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:34,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:34,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:34,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:34,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:34,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:34,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:34,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:34,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:34,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 15 proven. 85 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 20:53:34,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756217782] [2020-10-12 20:53:34,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:34,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:53:34,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432760160] [2020-10-12 20:53:34,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:53:34,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:34,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:53:34,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:53:34,281 INFO L87 Difference]: Start difference. First operand 835 states and 1336 transitions. Second operand 10 states. [2020-10-12 20:53:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:36,742 INFO L93 Difference]: Finished difference Result 2073 states and 3322 transitions. [2020-10-12 20:53:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:53:36,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-10-12 20:53:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:36,745 INFO L225 Difference]: With dead ends: 2073 [2020-10-12 20:53:36,745 INFO L226 Difference]: Without dead ends: 1261 [2020-10-12 20:53:36,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:53:36,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2020-10-12 20:53:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1211. [2020-10-12 20:53:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-10-12 20:53:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1948 transitions. [2020-10-12 20:53:36,777 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1948 transitions. Word has length 128 [2020-10-12 20:53:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:36,778 INFO L479 AbstractCegarLoop]: Abstraction has 1211 states and 1948 transitions. [2020-10-12 20:53:36,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:53:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1948 transitions. [2020-10-12 20:53:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 20:53:36,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:36,780 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:36,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:53:36,780 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:36,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1077957106, now seen corresponding path program 1 times [2020-10-12 20:53:36,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:36,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9743645] [2020-10-12 20:53:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:36,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:37,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:41,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 20:53:41,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:53:41,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:53:41,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:53:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:53:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:53:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:41,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:41,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:41,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:41,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:41,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:53:41,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9743645] [2020-10-12 20:53:41,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:41,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:41,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980837187] [2020-10-12 20:53:41,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:41,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:41,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:41,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:41,885 INFO L87 Difference]: Start difference. First operand 1211 states and 1948 transitions. Second operand 5 states. [2020-10-12 20:53:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:42,646 INFO L93 Difference]: Finished difference Result 2502 states and 4003 transitions. [2020-10-12 20:53:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:42,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 20:53:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:42,649 INFO L225 Difference]: With dead ends: 2502 [2020-10-12 20:53:42,650 INFO L226 Difference]: Without dead ends: 1284 [2020-10-12 20:53:42,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:42,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2020-10-12 20:53:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1211. [2020-10-12 20:53:42,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-10-12 20:53:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1945 transitions. [2020-10-12 20:53:42,690 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1945 transitions. Word has length 128 [2020-10-12 20:53:42,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:42,690 INFO L479 AbstractCegarLoop]: Abstraction has 1211 states and 1945 transitions. [2020-10-12 20:53:42,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1945 transitions. [2020-10-12 20:53:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:53:42,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:42,693 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:42,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:53:42,693 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:42,694 INFO L82 PathProgramCache]: Analyzing trace with hash -2098474417, now seen corresponding path program 1 times [2020-10-12 20:53:42,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:42,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379739605] [2020-10-12 20:53:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:47,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:47,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 20:53:47,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:53:47,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 20:53:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:53:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:47,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:47,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:47,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:47,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:53:47,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:47,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 20:53:47,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379739605] [2020-10-12 20:53:47,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:47,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:47,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900338697] [2020-10-12 20:53:47,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:47,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:47,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:47,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:47,795 INFO L87 Difference]: Start difference. First operand 1211 states and 1945 transitions. Second operand 5 states. [2020-10-12 20:53:48,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:48,579 INFO L93 Difference]: Finished difference Result 2533 states and 4038 transitions. [2020-10-12 20:53:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:48,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-12 20:53:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:48,582 INFO L225 Difference]: With dead ends: 2533 [2020-10-12 20:53:48,582 INFO L226 Difference]: Without dead ends: 1345 [2020-10-12 20:53:48,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:48,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-10-12 20:53:48,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1211. [2020-10-12 20:53:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-10-12 20:53:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1942 transitions. [2020-10-12 20:53:48,617 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1942 transitions. Word has length 129 [2020-10-12 20:53:48,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:48,618 INFO L479 AbstractCegarLoop]: Abstraction has 1211 states and 1942 transitions. [2020-10-12 20:53:48,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:48,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1942 transitions. [2020-10-12 20:53:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:53:48,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:48,620 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:48,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:53:48,621 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:48,621 INFO L82 PathProgramCache]: Analyzing trace with hash 828498271, now seen corresponding path program 1 times [2020-10-12 20:53:48,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:48,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910782092] [2020-10-12 20:53:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:53,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:53:53,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:53,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:53:53,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:53:53,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:53,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:53,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:53,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:53,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:53,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:53,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:53,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:53,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-12 20:53:53,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910782092] [2020-10-12 20:53:53,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:53,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:53,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857822005] [2020-10-12 20:53:53,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:53,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:53,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:53,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:53,766 INFO L87 Difference]: Start difference. First operand 1211 states and 1942 transitions. Second operand 5 states. [2020-10-12 20:53:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:54,470 INFO L93 Difference]: Finished difference Result 3570 states and 5728 transitions. [2020-10-12 20:53:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:54,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-12 20:53:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:54,478 INFO L225 Difference]: With dead ends: 3570 [2020-10-12 20:53:54,478 INFO L226 Difference]: Without dead ends: 2382 [2020-10-12 20:53:54,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:54,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2020-10-12 20:53:54,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2380. [2020-10-12 20:53:54,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2380 states. [2020-10-12 20:53:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3771 transitions. [2020-10-12 20:53:54,555 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3771 transitions. Word has length 130 [2020-10-12 20:53:54,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:54,555 INFO L479 AbstractCegarLoop]: Abstraction has 2380 states and 3771 transitions. [2020-10-12 20:53:54,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:54,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3771 transitions. [2020-10-12 20:53:54,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:53:54,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:54,560 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:54,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:53:54,560 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:54,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:54,561 INFO L82 PathProgramCache]: Analyzing trace with hash -522886947, now seen corresponding path program 1 times [2020-10-12 20:53:54,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:54,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278447443] [2020-10-12 20:53:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:59,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:59,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:53:59,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:53:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:53:59,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 20:53:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:53:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:59,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:59,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:59,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:59,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:59,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 20:53:59,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278447443] [2020-10-12 20:53:59,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:59,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:59,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117994068] [2020-10-12 20:53:59,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:59,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:59,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:59,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:59,682 INFO L87 Difference]: Start difference. First operand 2380 states and 3771 transitions. Second operand 5 states. [2020-10-12 20:54:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:00,533 INFO L93 Difference]: Finished difference Result 4991 states and 7845 transitions. [2020-10-12 20:54:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:00,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-12 20:54:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:00,536 INFO L225 Difference]: With dead ends: 4991 [2020-10-12 20:54:00,537 INFO L226 Difference]: Without dead ends: 2648 [2020-10-12 20:54:00,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2020-10-12 20:54:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2380. [2020-10-12 20:54:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2380 states. [2020-10-12 20:54:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3765 transitions. [2020-10-12 20:54:00,618 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3765 transitions. Word has length 130 [2020-10-12 20:54:00,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:00,619 INFO L479 AbstractCegarLoop]: Abstraction has 2380 states and 3765 transitions. [2020-10-12 20:54:00,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:00,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3765 transitions. [2020-10-12 20:54:00,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:54:00,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:00,623 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:00,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:54:00,624 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:00,624 INFO L82 PathProgramCache]: Analyzing trace with hash 782013067, now seen corresponding path program 1 times [2020-10-12 20:54:00,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:00,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176104344] [2020-10-12 20:54:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:05,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:05,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:54:05,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:54:05,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 20:54:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:54:05,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:05,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:05,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:05,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:05,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:05,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:05,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-12 20:54:05,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176104344] [2020-10-12 20:54:05,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:05,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:05,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475545931] [2020-10-12 20:54:05,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:05,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:05,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:05,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:05,714 INFO L87 Difference]: Start difference. First operand 2380 states and 3765 transitions. Second operand 5 states. [2020-10-12 20:54:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:06,407 INFO L93 Difference]: Finished difference Result 4992 states and 7871 transitions. [2020-10-12 20:54:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:06,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-12 20:54:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:06,411 INFO L225 Difference]: With dead ends: 4992 [2020-10-12 20:54:06,411 INFO L226 Difference]: Without dead ends: 2649 [2020-10-12 20:54:06,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2020-10-12 20:54:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2503. [2020-10-12 20:54:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2503 states. [2020-10-12 20:54:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3966 transitions. [2020-10-12 20:54:06,487 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3966 transitions. Word has length 130 [2020-10-12 20:54:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:06,487 INFO L479 AbstractCegarLoop]: Abstraction has 2503 states and 3966 transitions. [2020-10-12 20:54:06,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3966 transitions. [2020-10-12 20:54:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 20:54:06,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:06,491 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:06,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 20:54:06,491 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:06,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1606239933, now seen corresponding path program 1 times [2020-10-12 20:54:06,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:06,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72918569] [2020-10-12 20:54:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:08,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:08,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:11,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 20:54:11,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:54:11,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:54:11,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:54:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:54:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:11,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:11,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:11,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:11,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 20:54:11,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72918569] [2020-10-12 20:54:11,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:11,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:11,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292145812] [2020-10-12 20:54:11,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:11,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:11,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:11,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:11,586 INFO L87 Difference]: Start difference. First operand 2503 states and 3966 transitions. Second operand 5 states. [2020-10-12 20:54:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:12,396 INFO L93 Difference]: Finished difference Result 5668 states and 8956 transitions. [2020-10-12 20:54:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:12,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-12 20:54:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:12,400 INFO L225 Difference]: With dead ends: 5668 [2020-10-12 20:54:12,400 INFO L226 Difference]: Without dead ends: 3202 [2020-10-12 20:54:12,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2020-10-12 20:54:12,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 2596. [2020-10-12 20:54:12,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2596 states. [2020-10-12 20:54:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 4067 transitions. [2020-10-12 20:54:12,468 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 4067 transitions. Word has length 131 [2020-10-12 20:54:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:12,468 INFO L479 AbstractCegarLoop]: Abstraction has 2596 states and 4067 transitions. [2020-10-12 20:54:12,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 4067 transitions. [2020-10-12 20:54:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 20:54:12,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:12,471 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:12,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 20:54:12,471 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1747214529, now seen corresponding path program 1 times [2020-10-12 20:54:12,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:12,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597508524] [2020-10-12 20:54:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:13,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 20:54:13,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-12 20:54:13,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-12 20:54:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:54:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:13,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:13,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:13,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:13,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:13,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:13,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:13,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:13,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:54:13,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597508524] [2020-10-12 20:54:13,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:13,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:13,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422469633] [2020-10-12 20:54:13,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:13,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:13,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:13,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:13,584 INFO L87 Difference]: Start difference. First operand 2596 states and 4067 transitions. Second operand 5 states. [2020-10-12 20:54:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:14,557 INFO L93 Difference]: Finished difference Result 5457 states and 8487 transitions. [2020-10-12 20:54:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:14,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-12 20:54:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:14,561 INFO L225 Difference]: With dead ends: 5457 [2020-10-12 20:54:14,561 INFO L226 Difference]: Without dead ends: 2890 [2020-10-12 20:54:14,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:14,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-10-12 20:54:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2554. [2020-10-12 20:54:14,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2554 states. [2020-10-12 20:54:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 3987 transitions. [2020-10-12 20:54:14,622 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 3987 transitions. Word has length 131 [2020-10-12 20:54:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:14,623 INFO L479 AbstractCegarLoop]: Abstraction has 2554 states and 3987 transitions. [2020-10-12 20:54:14,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 3987 transitions. [2020-10-12 20:54:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 20:54:14,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:14,626 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:14,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 20:54:14,626 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:14,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:14,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1008238428, now seen corresponding path program 1 times [2020-10-12 20:54:14,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:14,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281365073] [2020-10-12 20:54:14,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:16,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:16,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:19,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 20:54:19,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:54:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:54:19,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:54:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:54:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:19,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:19,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:19,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:19,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:19,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:19,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 20:54:19,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281365073] [2020-10-12 20:54:19,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:19,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:19,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603894132] [2020-10-12 20:54:19,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:19,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:19,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:19,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:19,729 INFO L87 Difference]: Start difference. First operand 2554 states and 3987 transitions. Second operand 5 states. [2020-10-12 20:54:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:20,720 INFO L93 Difference]: Finished difference Result 5700 states and 8880 transitions. [2020-10-12 20:54:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:20,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-12 20:54:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:20,724 INFO L225 Difference]: With dead ends: 5700 [2020-10-12 20:54:20,724 INFO L226 Difference]: Without dead ends: 3183 [2020-10-12 20:54:20,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2020-10-12 20:54:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 2803. [2020-10-12 20:54:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2803 states. [2020-10-12 20:54:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 4436 transitions. [2020-10-12 20:54:20,777 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 4436 transitions. Word has length 132 [2020-10-12 20:54:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:20,778 INFO L479 AbstractCegarLoop]: Abstraction has 2803 states and 4436 transitions. [2020-10-12 20:54:20,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 4436 transitions. [2020-10-12 20:54:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 20:54:20,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:20,781 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:20,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 20:54:20,781 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:20,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1315625052, now seen corresponding path program 1 times [2020-10-12 20:54:20,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:20,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751609453] [2020-10-12 20:54:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:20,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:25,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 20:54:25,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:54:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:54:25,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:54:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:54:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:25,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:25,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:25,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:25,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 20:54:25,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751609453] [2020-10-12 20:54:25,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:25,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:25,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528949815] [2020-10-12 20:54:25,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:25,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:25,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:25,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:25,873 INFO L87 Difference]: Start difference. First operand 2803 states and 4436 transitions. Second operand 5 states. [2020-10-12 20:54:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:26,663 INFO L93 Difference]: Finished difference Result 6025 states and 9501 transitions. [2020-10-12 20:54:26,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:26,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-12 20:54:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:26,667 INFO L225 Difference]: With dead ends: 6025 [2020-10-12 20:54:26,667 INFO L226 Difference]: Without dead ends: 3259 [2020-10-12 20:54:26,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:26,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2020-10-12 20:54:26,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 2799. [2020-10-12 20:54:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2799 states. [2020-10-12 20:54:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4374 transitions. [2020-10-12 20:54:26,726 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4374 transitions. Word has length 132 [2020-10-12 20:54:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:26,726 INFO L479 AbstractCegarLoop]: Abstraction has 2799 states and 4374 transitions. [2020-10-12 20:54:26,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4374 transitions. [2020-10-12 20:54:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 20:54:26,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:26,729 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:26,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 20:54:26,730 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:26,730 INFO L82 PathProgramCache]: Analyzing trace with hash -386671414, now seen corresponding path program 1 times [2020-10-12 20:54:26,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:26,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893194984] [2020-10-12 20:54:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:26,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:26,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:26,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 20:54:26,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:26,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-12 20:54:26,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:54:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 20:54:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 20:54:26,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:27,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:27,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:27,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:27,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:54:27,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893194984] [2020-10-12 20:54:27,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:27,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:54:27,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782583613] [2020-10-12 20:54:27,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:54:27,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:27,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:54:27,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:54:27,036 INFO L87 Difference]: Start difference. First operand 2799 states and 4374 transitions. Second operand 4 states. [2020-10-12 20:54:27,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:27,557 INFO L93 Difference]: Finished difference Result 8329 states and 13045 transitions. [2020-10-12 20:54:27,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:54:27,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-12 20:54:27,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:27,563 INFO L225 Difference]: With dead ends: 8329 [2020-10-12 20:54:27,563 INFO L226 Difference]: Without dead ends: 5563 [2020-10-12 20:54:27,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:54:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2020-10-12 20:54:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5563. [2020-10-12 20:54:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5563 states. [2020-10-12 20:54:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5563 states to 5563 states and 8693 transitions. [2020-10-12 20:54:27,673 INFO L78 Accepts]: Start accepts. Automaton has 5563 states and 8693 transitions. Word has length 132 [2020-10-12 20:54:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:27,673 INFO L479 AbstractCegarLoop]: Abstraction has 5563 states and 8693 transitions. [2020-10-12 20:54:27,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:54:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5563 states and 8693 transitions. [2020-10-12 20:54:27,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 20:54:27,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:27,677 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:27,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 20:54:27,677 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:27,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:27,678 INFO L82 PathProgramCache]: Analyzing trace with hash 199604808, now seen corresponding path program 1 times [2020-10-12 20:54:27,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:27,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502556391] [2020-10-12 20:54:27,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:27,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 20:54:27,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 20:54:27,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:54:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 20:54:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 20:54:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:27,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:27,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:27,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:54:27,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502556391] [2020-10-12 20:54:27,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:27,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:54:27,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752127210] [2020-10-12 20:54:27,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:54:27,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:27,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:54:27,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:54:27,858 INFO L87 Difference]: Start difference. First operand 5563 states and 8693 transitions. Second operand 4 states. [2020-10-12 20:54:28,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:28,435 INFO L93 Difference]: Finished difference Result 13857 states and 21683 transitions. [2020-10-12 20:54:28,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:54:28,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-12 20:54:28,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:28,443 INFO L225 Difference]: With dead ends: 13857 [2020-10-12 20:54:28,443 INFO L226 Difference]: Without dead ends: 8327 [2020-10-12 20:54:28,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:54:28,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8327 states. [2020-10-12 20:54:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8327 to 8327. [2020-10-12 20:54:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8327 states. [2020-10-12 20:54:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8327 states to 8327 states and 13020 transitions. [2020-10-12 20:54:28,610 INFO L78 Accepts]: Start accepts. Automaton has 8327 states and 13020 transitions. Word has length 132 [2020-10-12 20:54:28,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:28,611 INFO L479 AbstractCegarLoop]: Abstraction has 8327 states and 13020 transitions. [2020-10-12 20:54:28,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:54:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8327 states and 13020 transitions. [2020-10-12 20:54:28,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 20:54:28,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:28,618 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:28,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 20:54:28,619 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:28,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:28,619 INFO L82 PathProgramCache]: Analyzing trace with hash 462086894, now seen corresponding path program 1 times [2020-10-12 20:54:28,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:28,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171689989] [2020-10-12 20:54:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:33,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:33,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 20:54:33,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:54:33,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:54:33,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:33,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:33,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:33,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:54:33,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:33,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:33,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:33,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:33,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:33,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:33,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 20:54:33,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171689989] [2020-10-12 20:54:33,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:33,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:33,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480199830] [2020-10-12 20:54:33,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:33,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:33,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:33,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:33,727 INFO L87 Difference]: Start difference. First operand 8327 states and 13020 transitions. Second operand 5 states. [2020-10-12 20:54:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:34,618 INFO L93 Difference]: Finished difference Result 17149 states and 26701 transitions. [2020-10-12 20:54:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:34,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-12 20:54:34,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:34,627 INFO L225 Difference]: With dead ends: 17149 [2020-10-12 20:54:34,627 INFO L226 Difference]: Without dead ends: 8855 [2020-10-12 20:54:34,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:34,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8855 states. [2020-10-12 20:54:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8855 to 8345. [2020-10-12 20:54:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8345 states. [2020-10-12 20:54:34,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8345 states to 8345 states and 13038 transitions. [2020-10-12 20:54:34,809 INFO L78 Accepts]: Start accepts. Automaton has 8345 states and 13038 transitions. Word has length 155 [2020-10-12 20:54:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:34,809 INFO L479 AbstractCegarLoop]: Abstraction has 8345 states and 13038 transitions. [2020-10-12 20:54:34,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:34,809 INFO L276 IsEmpty]: Start isEmpty. Operand 8345 states and 13038 transitions. [2020-10-12 20:54:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 20:54:34,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:34,817 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:34,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 20:54:34,818 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:34,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:34,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1454976184, now seen corresponding path program 1 times [2020-10-12 20:54:34,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:34,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550387295] [2020-10-12 20:54:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:39,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:39,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 20:54:39,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:54:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:54:39,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 20:54:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:54:39,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:39,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:39,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:39,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:39,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:39,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:39,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:39,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:39,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:39,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:54:39,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550387295] [2020-10-12 20:54:39,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:39,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:39,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637260075] [2020-10-12 20:54:39,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:39,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:39,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:39,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:39,923 INFO L87 Difference]: Start difference. First operand 8345 states and 13038 transitions. Second operand 5 states. [2020-10-12 20:54:40,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:40,988 INFO L93 Difference]: Finished difference Result 17629 states and 27379 transitions. [2020-10-12 20:54:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:40,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-12 20:54:40,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:40,997 INFO L225 Difference]: With dead ends: 17629 [2020-10-12 20:54:40,997 INFO L226 Difference]: Without dead ends: 9317 [2020-10-12 20:54:41,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9317 states. [2020-10-12 20:54:41,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9317 to 8345. [2020-10-12 20:54:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8345 states. [2020-10-12 20:54:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8345 states to 8345 states and 13020 transitions. [2020-10-12 20:54:41,202 INFO L78 Accepts]: Start accepts. Automaton has 8345 states and 13020 transitions. Word has length 156 [2020-10-12 20:54:41,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:41,203 INFO L479 AbstractCegarLoop]: Abstraction has 8345 states and 13020 transitions. [2020-10-12 20:54:41,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:41,203 INFO L276 IsEmpty]: Start isEmpty. Operand 8345 states and 13020 transitions. [2020-10-12 20:54:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 20:54:41,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:41,214 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:41,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-12 20:54:41,214 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:41,215 INFO L82 PathProgramCache]: Analyzing trace with hash 775224451, now seen corresponding path program 1 times [2020-10-12 20:54:41,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:41,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270801405] [2020-10-12 20:54:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:41,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:43,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:43,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:46,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 20:54:46,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:54:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:54:46,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:46,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 20:54:46,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:54:46,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:46,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:46,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:46,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:46,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:46,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:46,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:46,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:54:46,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270801405] [2020-10-12 20:54:46,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:46,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:46,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541539274] [2020-10-12 20:54:46,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:46,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:46,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:46,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:46,331 INFO L87 Difference]: Start difference. First operand 8345 states and 13020 transitions. Second operand 5 states. [2020-10-12 20:54:47,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:47,438 INFO L93 Difference]: Finished difference Result 17491 states and 27115 transitions. [2020-10-12 20:54:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:47,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-12 20:54:47,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:47,447 INFO L225 Difference]: With dead ends: 17491 [2020-10-12 20:54:47,447 INFO L226 Difference]: Without dead ends: 9179 [2020-10-12 20:54:47,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:47,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9179 states. [2020-10-12 20:54:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9179 to 8345. [2020-10-12 20:54:47,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8345 states. [2020-10-12 20:54:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8345 states to 8345 states and 13002 transitions. [2020-10-12 20:54:47,642 INFO L78 Accepts]: Start accepts. Automaton has 8345 states and 13002 transitions. Word has length 157 [2020-10-12 20:54:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:47,642 INFO L479 AbstractCegarLoop]: Abstraction has 8345 states and 13002 transitions. [2020-10-12 20:54:47,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 8345 states and 13002 transitions. [2020-10-12 20:54:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-12 20:54:47,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:47,651 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:47,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-12 20:54:47,651 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:47,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:47,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1963331529, now seen corresponding path program 1 times [2020-10-12 20:54:47,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:47,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140118486] [2020-10-12 20:54:47,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:49,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:49,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 20:54:49,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-10-12 20:54:49,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 20:54:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:54:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:49,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:49,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:49,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:54:49,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140118486] [2020-10-12 20:54:49,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:49,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:49,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773100961] [2020-10-12 20:54:49,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:49,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:49,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:49,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:49,081 INFO L87 Difference]: Start difference. First operand 8345 states and 13002 transitions. Second operand 5 states. [2020-10-12 20:54:50,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:50,105 INFO L93 Difference]: Finished difference Result 17419 states and 26989 transitions. [2020-10-12 20:54:50,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:50,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-12 20:54:50,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:50,114 INFO L225 Difference]: With dead ends: 17419 [2020-10-12 20:54:50,114 INFO L226 Difference]: Without dead ends: 9107 [2020-10-12 20:54:50,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states.