/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.15.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:57:54,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:57:54,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:57:54,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:57:54,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:57:54,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:57:54,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:57:54,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:57:54,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:57:54,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:57:54,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:57:54,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:57:54,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:57:54,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:57:54,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:57:54,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:57:54,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:57:54,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:57:54,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:57:54,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:57:54,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:57:54,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:57:54,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:57:54,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:57:54,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:57:54,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:57:54,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:57:54,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:57:54,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:57:54,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:57:54,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:57:54,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:57:54,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:57:54,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:57:54,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:57:54,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:57:54,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:57:54,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:57:54,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:57:54,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:57:54,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:57:54,962 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 20:57:54,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:57:54,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:57:54,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:57:54,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:57:54,986 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:57:54,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:57:54,987 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:57:54,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:57:54,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:57:54,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:57:54,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:57:54,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:57:54,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:57:54,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:57:54,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:57:54,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:57:54,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:57:54,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:57:54,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:57:54,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:57:54,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:57:54,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:57:54,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:57:54,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:57:54,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:57:54,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:57:54,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:57:54,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:57:54,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:57:54,991 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 20:57:55,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:57:55,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:57:55,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:57:55,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:57:55,346 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:57:55,347 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.15.i.cil-2.c [2020-10-12 20:57:55,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02bb6ac36/4e113e3c7b49481b9ae69766dfbd3e05/FLAG99c1d99ca [2020-10-12 20:57:56,064 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:57:56,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.15.i.cil-2.c [2020-10-12 20:57:56,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02bb6ac36/4e113e3c7b49481b9ae69766dfbd3e05/FLAG99c1d99ca [2020-10-12 20:57:56,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02bb6ac36/4e113e3c7b49481b9ae69766dfbd3e05 [2020-10-12 20:57:56,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:57:56,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:57:56,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:57:56,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:57:56,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:57:56,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:57:56" (1/1) ... [2020-10-12 20:57:56,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b0f145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:56, skipping insertion in model container [2020-10-12 20:57:56,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:57:56" (1/1) ... [2020-10-12 20:57:56,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:57:56,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:57:57,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:57:57,070 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:57:57,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:57:57,260 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:57:57,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:57 WrapperNode [2020-10-12 20:57:57,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:57:57,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:57:57,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:57:57,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:57:57,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:57" (1/1) ... [2020-10-12 20:57:57,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:57" (1/1) ... [2020-10-12 20:57:57,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:57" (1/1) ... [2020-10-12 20:57:57,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:57" (1/1) ... [2020-10-12 20:57:57,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:57" (1/1) ... [2020-10-12 20:57:57,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:57" (1/1) ... [2020-10-12 20:57:57,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:57" (1/1) ... [2020-10-12 20:57:57,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:57:57,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:57:57,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:57:57,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:57:57,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:57" (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 20:57:57,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:57:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:57:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:57:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:57:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:57:57,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:57:57,465 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:57:57,465 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:57:57,465 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:57:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:57:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:57:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:57:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:57:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:57:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:57:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:57:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:57:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:57:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:57:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:57:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:57:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:57:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:57:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:57:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:57:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:57:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:57:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:57:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:57:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:57:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:57:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:57:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:57:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:57:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:57:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:57:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:57:58,053 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:57:58,635 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:57:58,635 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:57:58,657 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:57:58,658 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:57:58,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:57:58 BoogieIcfgContainer [2020-10-12 20:57:58,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:57:58,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:57:58,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:57:58,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:57:58,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:57:56" (1/3) ... [2020-10-12 20:57:58,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4438c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:57:58, skipping insertion in model container [2020-10-12 20:57:58,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:57" (2/3) ... [2020-10-12 20:57:58,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4438c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:57:58, skipping insertion in model container [2020-10-12 20:57:58,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:57:58" (3/3) ... [2020-10-12 20:57:58,671 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.15.i.cil-2.c [2020-10-12 20:57:58,682 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:57:58,689 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:57:58,703 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:57:58,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:57:58,729 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:57:58,729 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:57:58,729 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:57:58,729 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:57:58,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:57:58,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:57:58,730 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:57:58,751 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-10-12 20:57:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 20:57:58,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:58,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:58,761 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:58,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:58,766 INFO L82 PathProgramCache]: Analyzing trace with hash -707159307, now seen corresponding path program 1 times [2020-10-12 20:57:58,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:58,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000432044] [2020-10-12 20:57:58,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:59,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:59,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:00,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:00,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 20:58:00,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:00,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-10-12 20:58:00,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:58:00,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:58:00,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:00,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:00,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:00,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:00,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:58:00,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:58:00,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000432044] [2020-10-12 20:58:00,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:00,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:00,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486232696] [2020-10-12 20:58:00,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:00,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:00,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:00,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:00,630 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 5 states. [2020-10-12 20:58:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:01,795 INFO L93 Difference]: Finished difference Result 341 states and 574 transitions. [2020-10-12 20:58:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:01,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-12 20:58:01,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:01,812 INFO L225 Difference]: With dead ends: 341 [2020-10-12 20:58:01,813 INFO L226 Difference]: Without dead ends: 173 [2020-10-12 20:58:01,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-12 20:58:01,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 156. [2020-10-12 20:58:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-12 20:58:01,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 240 transitions. [2020-10-12 20:58:01,876 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 240 transitions. Word has length 50 [2020-10-12 20:58:01,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:01,877 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 240 transitions. [2020-10-12 20:58:01,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 240 transitions. [2020-10-12 20:58:01,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:58:01,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:01,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:01,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:58:01,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:01,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1166441782, now seen corresponding path program 1 times [2020-10-12 20:58:01,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:01,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736069880] [2020-10-12 20:58:01,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:01,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:03,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:03,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:58:03,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:03,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1280 [2020-10-12 20:58:03,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:03,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:03,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:58:03,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:03,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:03,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:03,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:03,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:03,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:03,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:58:03,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:58:03,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736069880] [2020-10-12 20:58:03,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:03,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:03,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907188677] [2020-10-12 20:58:03,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:03,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:03,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:03,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:03,348 INFO L87 Difference]: Start difference. First operand 156 states and 240 transitions. Second operand 5 states. [2020-10-12 20:58:04,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:04,054 INFO L93 Difference]: Finished difference Result 304 states and 465 transitions. [2020-10-12 20:58:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:04,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-12 20:58:04,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:04,061 INFO L225 Difference]: With dead ends: 304 [2020-10-12 20:58:04,061 INFO L226 Difference]: Without dead ends: 173 [2020-10-12 20:58:04,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:04,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-12 20:58:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 156. [2020-10-12 20:58:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-12 20:58:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 239 transitions. [2020-10-12 20:58:04,092 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 239 transitions. Word has length 63 [2020-10-12 20:58:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:04,093 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 239 transitions. [2020-10-12 20:58:04,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 239 transitions. [2020-10-12 20:58:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:58:04,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:04,100 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:04,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:58:04,100 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:04,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1314488346, now seen corresponding path program 1 times [2020-10-12 20:58:04,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:04,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226543230] [2020-10-12 20:58:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:04,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:04,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:06,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:09,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:58:09,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:09,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4951 [2020-10-12 20:58:09,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:58:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:58:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:09,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:09,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:09,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:09,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:09,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:09,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:58:09,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226543230] [2020-10-12 20:58:09,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:09,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:09,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911837346] [2020-10-12 20:58:09,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:09,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:09,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:09,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:09,253 INFO L87 Difference]: Start difference. First operand 156 states and 239 transitions. Second operand 5 states. [2020-10-12 20:58:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:09,979 INFO L93 Difference]: Finished difference Result 304 states and 464 transitions. [2020-10-12 20:58:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:09,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:58:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:09,982 INFO L225 Difference]: With dead ends: 304 [2020-10-12 20:58:09,982 INFO L226 Difference]: Without dead ends: 173 [2020-10-12 20:58:09,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-12 20:58:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 166. [2020-10-12 20:58:10,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-12 20:58:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 251 transitions. [2020-10-12 20:58:10,012 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 251 transitions. Word has length 64 [2020-10-12 20:58:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:10,012 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 251 transitions. [2020-10-12 20:58:10,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 251 transitions. [2020-10-12 20:58:10,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:58:10,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:10,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:10,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:58:10,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:10,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:10,018 INFO L82 PathProgramCache]: Analyzing trace with hash -377855491, now seen corresponding path program 1 times [2020-10-12 20:58:10,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:10,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531332339] [2020-10-12 20:58:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:10,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:10,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:58:10,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 856 [2020-10-12 20:58:10,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:58:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:11,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:11,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:11,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:11,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:11,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:11,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:11,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:58:11,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531332339] [2020-10-12 20:58:11,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:11,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:11,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565575097] [2020-10-12 20:58:11,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:11,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:11,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:11,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:11,048 INFO L87 Difference]: Start difference. First operand 166 states and 251 transitions. Second operand 5 states. [2020-10-12 20:58:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:11,740 INFO L93 Difference]: Finished difference Result 302 states and 461 transitions. [2020-10-12 20:58:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:11,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:58:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:11,742 INFO L225 Difference]: With dead ends: 302 [2020-10-12 20:58:11,743 INFO L226 Difference]: Without dead ends: 171 [2020-10-12 20:58:11,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-12 20:58:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 166. [2020-10-12 20:58:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-12 20:58:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 250 transitions. [2020-10-12 20:58:11,754 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 250 transitions. Word has length 64 [2020-10-12 20:58:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:11,754 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 250 transitions. [2020-10-12 20:58:11,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:11,754 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 250 transitions. [2020-10-12 20:58:11,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:58:11,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:11,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:11,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:58:11,757 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:11,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:11,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1716504540, now seen corresponding path program 1 times [2020-10-12 20:58:11,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:11,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929308483] [2020-10-12 20:58:11,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:11,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:11,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:12,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:12,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:58:12,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-12 20:58:12,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:12,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:58:12,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:12,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:12,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:12,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:12,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:58:12,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:12,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:58:12,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929308483] [2020-10-12 20:58:12,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:12,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:12,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070581164] [2020-10-12 20:58:12,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:12,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:12,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:12,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:12,303 INFO L87 Difference]: Start difference. First operand 166 states and 250 transitions. Second operand 5 states. [2020-10-12 20:58:12,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:12,974 INFO L93 Difference]: Finished difference Result 301 states and 459 transitions. [2020-10-12 20:58:12,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:12,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:58:12,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:12,976 INFO L225 Difference]: With dead ends: 301 [2020-10-12 20:58:12,976 INFO L226 Difference]: Without dead ends: 170 [2020-10-12 20:58:12,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-12 20:58:12,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2020-10-12 20:58:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-12 20:58:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 249 transitions. [2020-10-12 20:58:12,989 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 249 transitions. Word has length 64 [2020-10-12 20:58:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:12,989 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 249 transitions. [2020-10-12 20:58:12,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 249 transitions. [2020-10-12 20:58:12,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:58:12,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:12,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:12,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:58:12,991 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:12,992 INFO L82 PathProgramCache]: Analyzing trace with hash -544679161, now seen corresponding path program 1 times [2020-10-12 20:58:12,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:12,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646101809] [2020-10-12 20:58:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:13,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:13,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:14,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:17,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:18,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:18,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:58:18,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:58:18,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:58:18,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:58:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:58:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:58:18,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:18,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:18,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:18,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:18,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:58:18,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646101809] [2020-10-12 20:58:18,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:58:18,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:58:18,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678248642] [2020-10-12 20:58:18,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:58:18,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:18,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:58:18,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:58:18,234 INFO L87 Difference]: Start difference. First operand 166 states and 249 transitions. Second operand 8 states. [2020-10-12 20:58:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:19,692 INFO L93 Difference]: Finished difference Result 448 states and 685 transitions. [2020-10-12 20:58:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:58:19,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-10-12 20:58:19,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:19,695 INFO L225 Difference]: With dead ends: 448 [2020-10-12 20:58:19,696 INFO L226 Difference]: Without dead ends: 317 [2020-10-12 20:58:19,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:58:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-12 20:58:19,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 268. [2020-10-12 20:58:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-12 20:58:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 413 transitions. [2020-10-12 20:58:19,709 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 413 transitions. Word has length 65 [2020-10-12 20:58:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:19,710 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 413 transitions. [2020-10-12 20:58:19,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:58:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 413 transitions. [2020-10-12 20:58:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:58:19,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:19,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:19,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:58:19,712 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:19,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1220871807, now seen corresponding path program 1 times [2020-10-12 20:58:19,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:19,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074387851] [2020-10-12 20:58:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:19,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:19,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:20,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:20,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:58:20,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:20,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-12 20:58:20,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:58:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:58:20,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:20,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:20,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:20,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:20,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:20,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:20,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:58:20,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:20,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:20,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:58:20,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074387851] [2020-10-12 20:58:20,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:20,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:20,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749183860] [2020-10-12 20:58:20,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:20,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:20,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:20,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:20,411 INFO L87 Difference]: Start difference. First operand 268 states and 413 transitions. Second operand 5 states. [2020-10-12 20:58:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:21,322 INFO L93 Difference]: Finished difference Result 690 states and 1080 transitions. [2020-10-12 20:58:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:21,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-12 20:58:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:21,329 INFO L225 Difference]: With dead ends: 690 [2020-10-12 20:58:21,330 INFO L226 Difference]: Without dead ends: 457 [2020-10-12 20:58:21,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:21,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-12 20:58:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 346. [2020-10-12 20:58:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-12 20:58:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 557 transitions. [2020-10-12 20:58:21,362 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 557 transitions. Word has length 67 [2020-10-12 20:58:21,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:21,363 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 557 transitions. [2020-10-12 20:58:21,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:21,363 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 557 transitions. [2020-10-12 20:58:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:58:21,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:21,364 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:21,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:58:21,370 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:21,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1157873175, now seen corresponding path program 1 times [2020-10-12 20:58:21,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:21,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985258540] [2020-10-12 20:58:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:21,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:58:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-12 20:58:21,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:58:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:58:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:21,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:21,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:21,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:21,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:21,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:21,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:58:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:58:21,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985258540] [2020-10-12 20:58:21,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:21,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:21,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235687956] [2020-10-12 20:58:21,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:21,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:21,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:21,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:21,976 INFO L87 Difference]: Start difference. First operand 346 states and 557 transitions. Second operand 5 states. [2020-10-12 20:58:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:22,743 INFO L93 Difference]: Finished difference Result 663 states and 1055 transitions. [2020-10-12 20:58:22,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:22,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-12 20:58:22,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:22,749 INFO L225 Difference]: With dead ends: 663 [2020-10-12 20:58:22,749 INFO L226 Difference]: Without dead ends: 352 [2020-10-12 20:58:22,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:22,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-12 20:58:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 312. [2020-10-12 20:58:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-12 20:58:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 489 transitions. [2020-10-12 20:58:22,762 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 489 transitions. Word has length 68 [2020-10-12 20:58:22,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:22,763 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 489 transitions. [2020-10-12 20:58:22,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 489 transitions. [2020-10-12 20:58:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:58:22,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:22,764 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:22,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:58:22,765 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:22,765 INFO L82 PathProgramCache]: Analyzing trace with hash 70740580, now seen corresponding path program 1 times [2020-10-12 20:58:22,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:22,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79232864] [2020-10-12 20:58:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:22,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:22,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:27,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:27,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:58:27,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:58:27,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:58:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:58:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:58:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:27,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:27,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:27,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:27,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:27,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:27,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:27,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:27,900 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 20:58:27,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79232864] [2020-10-12 20:58:27,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:27,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:58:27,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992814346] [2020-10-12 20:58:27,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:58:27,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:27,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:58:27,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:27,903 INFO L87 Difference]: Start difference. First operand 312 states and 489 transitions. Second operand 6 states. [2020-10-12 20:58:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:28,741 INFO L93 Difference]: Finished difference Result 512 states and 799 transitions. [2020-10-12 20:58:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:58:28,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-12 20:58:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:28,745 INFO L225 Difference]: With dead ends: 512 [2020-10-12 20:58:28,746 INFO L226 Difference]: Without dead ends: 329 [2020-10-12 20:58:28,747 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 20:58:28,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-12 20:58:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 319. [2020-10-12 20:58:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 20:58:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 497 transitions. [2020-10-12 20:58:28,764 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 497 transitions. Word has length 78 [2020-10-12 20:58:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:28,764 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 497 transitions. [2020-10-12 20:58:28,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:58:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 497 transitions. [2020-10-12 20:58:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:58:28,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:28,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:28,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:58:28,767 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:28,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:28,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2044744528, now seen corresponding path program 1 times [2020-10-12 20:58:28,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:28,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532408262] [2020-10-12 20:58:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:31,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:33,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:58:33,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:33,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:58:33,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:58:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:33,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:33,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:33,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:33,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:33,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:33,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:33,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:33,874 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 20:58:33,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532408262] [2020-10-12 20:58:33,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:33,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:33,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596119726] [2020-10-12 20:58:33,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:33,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:33,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:33,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:33,877 INFO L87 Difference]: Start difference. First operand 319 states and 497 transitions. Second operand 5 states. [2020-10-12 20:58:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:34,564 INFO L93 Difference]: Finished difference Result 514 states and 799 transitions. [2020-10-12 20:58:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:34,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:58:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:34,568 INFO L225 Difference]: With dead ends: 514 [2020-10-12 20:58:34,568 INFO L226 Difference]: Without dead ends: 323 [2020-10-12 20:58:34,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:34,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-12 20:58:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2020-10-12 20:58:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 20:58:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 496 transitions. [2020-10-12 20:58:34,583 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 496 transitions. Word has length 78 [2020-10-12 20:58:34,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:34,584 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 496 transitions. [2020-10-12 20:58:34,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:34,584 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 496 transitions. [2020-10-12 20:58:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:58:34,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:34,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:34,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:58:34,587 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:34,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash 2097010921, now seen corresponding path program 1 times [2020-10-12 20:58:34,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:34,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114043735] [2020-10-12 20:58:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:34,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:34,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:39,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:39,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:58:39,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4913 [2020-10-12 20:58:39,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:58:39,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:39,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:39,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:39,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:39,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:39,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:58:39,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:39,599 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 20:58:39,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114043735] [2020-10-12 20:58:39,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:39,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:39,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261395166] [2020-10-12 20:58:39,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:39,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:39,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:39,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:39,602 INFO L87 Difference]: Start difference. First operand 319 states and 496 transitions. Second operand 5 states. [2020-10-12 20:58:40,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:40,236 INFO L93 Difference]: Finished difference Result 514 states and 798 transitions. [2020-10-12 20:58:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:40,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:58:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:40,241 INFO L225 Difference]: With dead ends: 514 [2020-10-12 20:58:40,241 INFO L226 Difference]: Without dead ends: 323 [2020-10-12 20:58:40,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:40,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-12 20:58:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2020-10-12 20:58:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 20:58:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 495 transitions. [2020-10-12 20:58:40,255 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 495 transitions. Word has length 79 [2020-10-12 20:58:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:40,257 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 495 transitions. [2020-10-12 20:58:40,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 495 transitions. [2020-10-12 20:58:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:58:40,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:40,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:40,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:58:40,259 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:40,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:40,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1027001205, now seen corresponding path program 1 times [2020-10-12 20:58:40,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:40,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719602687] [2020-10-12 20:58:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:42,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:44,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:44,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:58:44,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3852 [2020-10-12 20:58:44,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:58:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:44,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:44,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:44,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:44,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:44,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:44,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:44,196 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 20:58:44,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719602687] [2020-10-12 20:58:44,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:44,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:44,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701324800] [2020-10-12 20:58:44,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:44,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:44,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:44,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:44,198 INFO L87 Difference]: Start difference. First operand 319 states and 495 transitions. Second operand 5 states. [2020-10-12 20:58:44,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:44,936 INFO L93 Difference]: Finished difference Result 514 states and 797 transitions. [2020-10-12 20:58:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:44,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:58:44,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:44,938 INFO L225 Difference]: With dead ends: 514 [2020-10-12 20:58:44,939 INFO L226 Difference]: Without dead ends: 323 [2020-10-12 20:58:44,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-12 20:58:44,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2020-10-12 20:58:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 20:58:44,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 494 transitions. [2020-10-12 20:58:44,952 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 494 transitions. Word has length 80 [2020-10-12 20:58:44,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:44,953 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 494 transitions. [2020-10-12 20:58:44,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:44,953 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 494 transitions. [2020-10-12 20:58:44,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:58:44,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:44,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:44,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:58:44,955 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:44,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1655725588, now seen corresponding path program 1 times [2020-10-12 20:58:44,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:44,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482231600] [2020-10-12 20:58:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:45,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:58:45,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:45,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-12 20:58:45,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:58:45,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:58:45,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:45,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:45,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:45,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:45,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:45,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:45,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:58:45,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482231600] [2020-10-12 20:58:45,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:45,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:45,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188521903] [2020-10-12 20:58:45,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:45,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:45,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:45,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:45,773 INFO L87 Difference]: Start difference. First operand 319 states and 494 transitions. Second operand 5 states. [2020-10-12 20:58:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:46,858 INFO L93 Difference]: Finished difference Result 562 states and 871 transitions. [2020-10-12 20:58:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:46,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:58:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:46,862 INFO L225 Difference]: With dead ends: 562 [2020-10-12 20:58:46,862 INFO L226 Difference]: Without dead ends: 400 [2020-10-12 20:58:46,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-12 20:58:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 351. [2020-10-12 20:58:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-12 20:58:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 552 transitions. [2020-10-12 20:58:46,876 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 552 transitions. Word has length 80 [2020-10-12 20:58:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:46,876 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 552 transitions. [2020-10-12 20:58:46,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 552 transitions. [2020-10-12 20:58:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:58:46,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:46,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:46,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:58:46,879 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:46,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1392636400, now seen corresponding path program 1 times [2020-10-12 20:58:46,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:46,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106744847] [2020-10-12 20:58:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:46,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:49,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:49,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:51,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:51,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:58:51,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:51,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:58:51,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:58:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:58:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:58:51,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:51,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:51,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:51,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:51,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:51,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:51,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:51,996 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 20:58:51,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106744847] [2020-10-12 20:58:51,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:51,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:51,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173247751] [2020-10-12 20:58:51,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:51,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:51,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:51,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:51,999 INFO L87 Difference]: Start difference. First operand 351 states and 552 transitions. Second operand 5 states. [2020-10-12 20:58:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:52,728 INFO L93 Difference]: Finished difference Result 593 states and 925 transitions. [2020-10-12 20:58:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:52,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:58:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:52,732 INFO L225 Difference]: With dead ends: 593 [2020-10-12 20:58:52,732 INFO L226 Difference]: Without dead ends: 389 [2020-10-12 20:58:52,733 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 20:58:52,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-12 20:58:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 360. [2020-10-12 20:58:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-12 20:58:52,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 561 transitions. [2020-10-12 20:58:52,745 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 561 transitions. Word has length 81 [2020-10-12 20:58:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:52,746 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 561 transitions. [2020-10-12 20:58:52,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:52,746 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 561 transitions. [2020-10-12 20:58:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:58:52,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:52,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:52,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:58:52,748 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:52,748 INFO L82 PathProgramCache]: Analyzing trace with hash 128661990, now seen corresponding path program 1 times [2020-10-12 20:58:52,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:52,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363739713] [2020-10-12 20:58:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:52,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:52,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:53,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:58:53,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-12 20:58:53,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:58:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:58:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:53,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:53,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:53,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:53,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:53,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:53,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:53,224 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 20:58:53,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363739713] [2020-10-12 20:58:53,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:53,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:53,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895682654] [2020-10-12 20:58:53,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:53,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:53,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:53,227 INFO L87 Difference]: Start difference. First operand 360 states and 561 transitions. Second operand 5 states. [2020-10-12 20:58:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:54,159 INFO L93 Difference]: Finished difference Result 894 states and 1404 transitions. [2020-10-12 20:58:54,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:54,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:58:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:54,165 INFO L225 Difference]: With dead ends: 894 [2020-10-12 20:58:54,165 INFO L226 Difference]: Without dead ends: 559 [2020-10-12 20:58:54,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-12 20:58:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 440. [2020-10-12 20:58:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-10-12 20:58:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 707 transitions. [2020-10-12 20:58:54,182 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 707 transitions. Word has length 81 [2020-10-12 20:58:54,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:54,183 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 707 transitions. [2020-10-12 20:58:54,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:54,183 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 707 transitions. [2020-10-12 20:58:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:58:54,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:54,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:54,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:58:54,185 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:54,186 INFO L82 PathProgramCache]: Analyzing trace with hash -656639134, now seen corresponding path program 1 times [2020-10-12 20:58:54,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:54,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541393828] [2020-10-12 20:58:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:54,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:54,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:54,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:54,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:58:54,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-12 20:58:54,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:58:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:58:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:54,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:54,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:54,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:54,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:54,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:54,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:54,611 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 20:58:54,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541393828] [2020-10-12 20:58:54,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:54,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:54,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056127960] [2020-10-12 20:58:54,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:54,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:54,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:54,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:54,613 INFO L87 Difference]: Start difference. First operand 440 states and 707 transitions. Second operand 5 states. [2020-10-12 20:58:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:55,499 INFO L93 Difference]: Finished difference Result 958 states and 1523 transitions. [2020-10-12 20:58:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:55,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:58:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:55,504 INFO L225 Difference]: With dead ends: 958 [2020-10-12 20:58:55,505 INFO L226 Difference]: Without dead ends: 543 [2020-10-12 20:58:55,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:55,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-10-12 20:58:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 440. [2020-10-12 20:58:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-10-12 20:58:55,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 707 transitions. [2020-10-12 20:58:55,521 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 707 transitions. Word has length 82 [2020-10-12 20:58:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:55,522 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 707 transitions. [2020-10-12 20:58:55,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 707 transitions. [2020-10-12 20:58:55,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:58:55,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:55,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:55,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:58:55,524 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:55,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:55,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1628748904, now seen corresponding path program 1 times [2020-10-12 20:58:55,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:55,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709931851] [2020-10-12 20:58:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:56,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:00,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:00,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:59:00,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:59:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:59:00,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:59:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:59:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:59:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:00,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:00,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:00,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:00,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:00,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:59:00,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709931851] [2020-10-12 20:59:00,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:00,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:00,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487823660] [2020-10-12 20:59:00,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:00,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:00,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:00,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:00,646 INFO L87 Difference]: Start difference. First operand 440 states and 707 transitions. Second operand 5 states. [2020-10-12 20:59:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:01,499 INFO L93 Difference]: Finished difference Result 893 states and 1430 transitions. [2020-10-12 20:59:01,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:01,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:59:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:01,503 INFO L225 Difference]: With dead ends: 893 [2020-10-12 20:59:01,504 INFO L226 Difference]: Without dead ends: 639 [2020-10-12 20:59:01,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-10-12 20:59:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 470. [2020-10-12 20:59:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-12 20:59:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 751 transitions. [2020-10-12 20:59:01,525 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 751 transitions. Word has length 82 [2020-10-12 20:59:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:01,525 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 751 transitions. [2020-10-12 20:59:01,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:01,526 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 751 transitions. [2020-10-12 20:59:01,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 20:59:01,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:01,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:01,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:59:01,528 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:01,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:01,528 INFO L82 PathProgramCache]: Analyzing trace with hash -858811095, now seen corresponding path program 1 times [2020-10-12 20:59:01,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:01,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513296338] [2020-10-12 20:59:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:01,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:02,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:06,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:06,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:59:06,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:59:06,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:59:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 20:59:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:06,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:06,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:06,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:06,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:06,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:59:06,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513296338] [2020-10-12 20:59:06,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:06,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:59:06,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697950671] [2020-10-12 20:59:06,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:59:06,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:06,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:59:06,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:59:06,797 INFO L87 Difference]: Start difference. First operand 470 states and 751 transitions. Second operand 9 states. [2020-10-12 20:59:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:08,380 INFO L93 Difference]: Finished difference Result 984 states and 1564 transitions. [2020-10-12 20:59:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:59:08,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-10-12 20:59:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:08,386 INFO L225 Difference]: With dead ends: 984 [2020-10-12 20:59:08,386 INFO L226 Difference]: Without dead ends: 725 [2020-10-12 20:59:08,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:59:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-12 20:59:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 479. [2020-10-12 20:59:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-10-12 20:59:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 762 transitions. [2020-10-12 20:59:08,406 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 762 transitions. Word has length 83 [2020-10-12 20:59:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:08,406 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 762 transitions. [2020-10-12 20:59:08,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:59:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 762 transitions. [2020-10-12 20:59:08,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:59:08,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:08,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:08,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:59:08,409 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:08,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:08,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1874706857, now seen corresponding path program 1 times [2020-10-12 20:59:08,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:08,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463044354] [2020-10-12 20:59:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:08,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:08,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:08,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:59:08,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:59:08,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-12 20:59:08,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:59:08,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:08,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:08,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:08,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:08,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:08,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:08,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:08,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:08,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463044354] [2020-10-12 20:59:08,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:08,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:08,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823100838] [2020-10-12 20:59:08,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:08,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:08,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:08,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:08,909 INFO L87 Difference]: Start difference. First operand 479 states and 762 transitions. Second operand 5 states. [2020-10-12 20:59:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:09,924 INFO L93 Difference]: Finished difference Result 1123 states and 1791 transitions. [2020-10-12 20:59:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:09,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:59:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:09,928 INFO L225 Difference]: With dead ends: 1123 [2020-10-12 20:59:09,928 INFO L226 Difference]: Without dead ends: 668 [2020-10-12 20:59:09,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:09,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-10-12 20:59:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 559. [2020-10-12 20:59:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-12 20:59:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 906 transitions. [2020-10-12 20:59:09,949 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 906 transitions. Word has length 89 [2020-10-12 20:59:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:09,950 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 906 transitions. [2020-10-12 20:59:09,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 906 transitions. [2020-10-12 20:59:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:59:09,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:09,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:09,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:59:09,952 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:09,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1626560363, now seen corresponding path program 1 times [2020-10-12 20:59:09,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:09,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982273075] [2020-10-12 20:59:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:10,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:59:10,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:10,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-12 20:59:10,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:59:10,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:10,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:10,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:10,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:10,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:10,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:10,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982273075] [2020-10-12 20:59:10,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:10,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:10,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245785905] [2020-10-12 20:59:10,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:10,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:10,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:10,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:10,720 INFO L87 Difference]: Start difference. First operand 559 states and 906 transitions. Second operand 5 states. [2020-10-12 20:59:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:11,474 INFO L93 Difference]: Finished difference Result 1188 states and 1926 transitions. [2020-10-12 20:59:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:11,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:59:11,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:11,477 INFO L225 Difference]: With dead ends: 1188 [2020-10-12 20:59:11,477 INFO L226 Difference]: Without dead ends: 653 [2020-10-12 20:59:11,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:11,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-12 20:59:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 607. [2020-10-12 20:59:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-10-12 20:59:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 988 transitions. [2020-10-12 20:59:11,501 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 988 transitions. Word has length 89 [2020-10-12 20:59:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:11,501 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 988 transitions. [2020-10-12 20:59:11,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 988 transitions. [2020-10-12 20:59:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:59:11,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:11,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:11,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:59:11,504 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1663436049, now seen corresponding path program 1 times [2020-10-12 20:59:11,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:11,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774097531] [2020-10-12 20:59:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:11,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:11,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 20:59:11,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:59:11,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-12 20:59:11,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:59:11,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:11,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:11,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:11,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:11,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:11,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:11,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:11,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774097531] [2020-10-12 20:59:11,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:11,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:11,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379526226] [2020-10-12 20:59:11,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:11,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:11,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:11,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:11,833 INFO L87 Difference]: Start difference. First operand 607 states and 988 transitions. Second operand 5 states. [2020-10-12 20:59:12,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:12,780 INFO L93 Difference]: Finished difference Result 1283 states and 2072 transitions. [2020-10-12 20:59:12,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:12,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-12 20:59:12,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:12,783 INFO L225 Difference]: With dead ends: 1283 [2020-10-12 20:59:12,783 INFO L226 Difference]: Without dead ends: 700 [2020-10-12 20:59:12,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:12,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-12 20:59:12,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 527. [2020-10-12 20:59:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-10-12 20:59:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 844 transitions. [2020-10-12 20:59:12,801 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 844 transitions. Word has length 90 [2020-10-12 20:59:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:12,801 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 844 transitions. [2020-10-12 20:59:12,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 844 transitions. [2020-10-12 20:59:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:59:12,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:12,804 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:12,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:59:12,804 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:12,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1103745340, now seen corresponding path program 1 times [2020-10-12 20:59:12,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:12,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412679117] [2020-10-12 20:59:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:12,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:17,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:17,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:59:17,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:59:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:59:17,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:59:17,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:17,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:59:17,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:18,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:18,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:18,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:18,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:18,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:18,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:59:18,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412679117] [2020-10-12 20:59:18,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:18,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:59:18,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423798611] [2020-10-12 20:59:18,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:59:18,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:18,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:59:18,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:59:18,277 INFO L87 Difference]: Start difference. First operand 527 states and 844 transitions. Second operand 9 states. [2020-10-12 20:59:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:20,485 INFO L93 Difference]: Finished difference Result 1380 states and 2204 transitions. [2020-10-12 20:59:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:59:20,488 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-12 20:59:20,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:20,493 INFO L225 Difference]: With dead ends: 1380 [2020-10-12 20:59:20,493 INFO L226 Difference]: Without dead ends: 1097 [2020-10-12 20:59:20,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 7 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 20:59:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2020-10-12 20:59:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 599. [2020-10-12 20:59:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-10-12 20:59:20,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 962 transitions. [2020-10-12 20:59:20,520 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 962 transitions. Word has length 95 [2020-10-12 20:59:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:20,521 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 962 transitions. [2020-10-12 20:59:20,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:59:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 962 transitions. [2020-10-12 20:59:20,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:59:20,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:20,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:20,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:59:20,524 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:20,525 INFO L82 PathProgramCache]: Analyzing trace with hash 325378288, now seen corresponding path program 1 times [2020-10-12 20:59:20,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:20,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218780675] [2020-10-12 20:59:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:21,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:23,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:23,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:59:23,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:23,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2801 [2020-10-12 20:59:23,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-12 20:59:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:59:23,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:23,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:23,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:23,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:23,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 20:59:23,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218780675] [2020-10-12 20:59:23,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:23,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:23,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327525291] [2020-10-12 20:59:23,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:23,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:23,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:23,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:23,412 INFO L87 Difference]: Start difference. First operand 599 states and 962 transitions. Second operand 5 states. [2020-10-12 20:59:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:24,124 INFO L93 Difference]: Finished difference Result 1278 states and 2054 transitions. [2020-10-12 20:59:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:24,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:59:24,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:24,127 INFO L225 Difference]: With dead ends: 1278 [2020-10-12 20:59:24,127 INFO L226 Difference]: Without dead ends: 703 [2020-10-12 20:59:24,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:24,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-12 20:59:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 651. [2020-10-12 20:59:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-10-12 20:59:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1052 transitions. [2020-10-12 20:59:24,153 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1052 transitions. Word has length 102 [2020-10-12 20:59:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:24,153 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 1052 transitions. [2020-10-12 20:59:24,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1052 transitions. [2020-10-12 20:59:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:59:24,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:24,155 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:24,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:59:24,156 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:24,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1856134884, now seen corresponding path program 1 times [2020-10-12 20:59:24,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:24,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760105049] [2020-10-12 20:59:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:24,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:26,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:26,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:59:26,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2285 [2020-10-12 20:59:26,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:59:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:59:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:26,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:26,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:26,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:26,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:26,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:59:26,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:26,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:59:26,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760105049] [2020-10-12 20:59:26,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:26,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:26,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108833038] [2020-10-12 20:59:26,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:26,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:26,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:26,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:26,528 INFO L87 Difference]: Start difference. First operand 651 states and 1052 transitions. Second operand 5 states. [2020-10-12 20:59:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:27,288 INFO L93 Difference]: Finished difference Result 1356 states and 2180 transitions. [2020-10-12 20:59:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:27,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:59:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:27,293 INFO L225 Difference]: With dead ends: 1356 [2020-10-12 20:59:27,293 INFO L226 Difference]: Without dead ends: 729 [2020-10-12 20:59:27,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-10-12 20:59:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 651. [2020-10-12 20:59:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-10-12 20:59:27,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1050 transitions. [2020-10-12 20:59:27,315 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1050 transitions. Word has length 105 [2020-10-12 20:59:27,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:27,315 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 1050 transitions. [2020-10-12 20:59:27,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1050 transitions. [2020-10-12 20:59:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 20:59:27,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:27,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:27,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:59:27,318 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:27,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:27,318 INFO L82 PathProgramCache]: Analyzing trace with hash 796119665, now seen corresponding path program 1 times [2020-10-12 20:59:27,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:27,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326738899] [2020-10-12 20:59:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:27,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:27,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:28,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:29,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:29,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 20:59:29,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:29,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2321 [2020-10-12 20:59:29,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:59:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:59:29,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:29,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:29,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:29,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:29,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:29,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:29,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:59:29,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326738899] [2020-10-12 20:59:29,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:29,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:29,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821158407] [2020-10-12 20:59:29,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:29,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:29,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:29,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:29,722 INFO L87 Difference]: Start difference. First operand 651 states and 1050 transitions. Second operand 5 states. [2020-10-12 20:59:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:30,458 INFO L93 Difference]: Finished difference Result 1340 states and 2150 transitions. [2020-10-12 20:59:30,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:30,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 20:59:30,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:30,465 INFO L225 Difference]: With dead ends: 1340 [2020-10-12 20:59:30,465 INFO L226 Difference]: Without dead ends: 713 [2020-10-12 20:59:30,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-10-12 20:59:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 651. [2020-10-12 20:59:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-10-12 20:59:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1048 transitions. [2020-10-12 20:59:30,491 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1048 transitions. Word has length 106 [2020-10-12 20:59:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:30,491 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 1048 transitions. [2020-10-12 20:59:30,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1048 transitions. [2020-10-12 20:59:30,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 20:59:30,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:30,493 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:30,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:59:30,495 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:30,496 INFO L82 PathProgramCache]: Analyzing trace with hash -240839070, now seen corresponding path program 1 times [2020-10-12 20:59:30,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:30,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19552892] [2020-10-12 20:59:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:30,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:32,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 20:59:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2087 [2020-10-12 20:59:32,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 20:59:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:59:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:32,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:32,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:32,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:32,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:32,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:32,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:32,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:32,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 20:59:32,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19552892] [2020-10-12 20:59:32,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:32,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:32,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073337058] [2020-10-12 20:59:32,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:32,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:32,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:32,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:32,667 INFO L87 Difference]: Start difference. First operand 651 states and 1048 transitions. Second operand 5 states. [2020-10-12 20:59:33,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:33,585 INFO L93 Difference]: Finished difference Result 1489 states and 2398 transitions. [2020-10-12 20:59:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:33,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 20:59:33,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:33,591 INFO L225 Difference]: With dead ends: 1489 [2020-10-12 20:59:33,591 INFO L226 Difference]: Without dead ends: 862 [2020-10-12 20:59:33,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2020-10-12 20:59:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 729. [2020-10-12 20:59:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-12 20:59:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1190 transitions. [2020-10-12 20:59:33,622 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1190 transitions. Word has length 106 [2020-10-12 20:59:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:33,623 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 1190 transitions. [2020-10-12 20:59:33,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1190 transitions. [2020-10-12 20:59:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 20:59:33,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:33,625 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:33,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:59:33,625 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:33,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:33,625 INFO L82 PathProgramCache]: Analyzing trace with hash 773729894, now seen corresponding path program 1 times [2020-10-12 20:59:33,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:33,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813785948] [2020-10-12 20:59:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:34,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:34,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:35,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:35,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 20:59:35,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2246 [2020-10-12 20:59:35,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:59:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:59:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:35,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:35,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:35,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:35,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:35,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 20:59:35,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813785948] [2020-10-12 20:59:35,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:35,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:35,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707111432] [2020-10-12 20:59:35,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:35,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:35,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:35,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:35,947 INFO L87 Difference]: Start difference. First operand 729 states and 1190 transitions. Second operand 5 states. [2020-10-12 20:59:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:36,607 INFO L93 Difference]: Finished difference Result 1472 states and 2400 transitions. [2020-10-12 20:59:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:36,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-12 20:59:36,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:36,614 INFO L225 Difference]: With dead ends: 1472 [2020-10-12 20:59:36,614 INFO L226 Difference]: Without dead ends: 767 [2020-10-12 20:59:36,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-10-12 20:59:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 729. [2020-10-12 20:59:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-12 20:59:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1188 transitions. [2020-10-12 20:59:36,635 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1188 transitions. Word has length 107 [2020-10-12 20:59:36,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:36,636 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 1188 transitions. [2020-10-12 20:59:36,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:36,636 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1188 transitions. [2020-10-12 20:59:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:59:36,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:36,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:36,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:59:36,638 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:36,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1330644517, now seen corresponding path program 1 times [2020-10-12 20:59:36,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:36,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410580498] [2020-10-12 20:59:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:37,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:39,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:39,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:59:39,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2960 [2020-10-12 20:59:39,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 20:59:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:59:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:39,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:39,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:39,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:39,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:39,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:39,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 20:59:39,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410580498] [2020-10-12 20:59:39,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:39,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:39,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807656395] [2020-10-12 20:59:39,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:39,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:39,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:39,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:39,704 INFO L87 Difference]: Start difference. First operand 729 states and 1188 transitions. Second operand 5 states. [2020-10-12 20:59:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:40,474 INFO L93 Difference]: Finished difference Result 1558 states and 2540 transitions. [2020-10-12 20:59:40,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:40,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:59:40,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:40,481 INFO L225 Difference]: With dead ends: 1558 [2020-10-12 20:59:40,481 INFO L226 Difference]: Without dead ends: 853 [2020-10-12 20:59:40,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-10-12 20:59:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 785. [2020-10-12 20:59:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-10-12 20:59:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1286 transitions. [2020-10-12 20:59:40,502 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1286 transitions. Word has length 108 [2020-10-12 20:59:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:40,502 INFO L479 AbstractCegarLoop]: Abstraction has 785 states and 1286 transitions. [2020-10-12 20:59:40,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1286 transitions. [2020-10-12 20:59:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:59:40,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:40,505 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:40,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:59:40,505 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:40,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1011301902, now seen corresponding path program 1 times [2020-10-12 20:59:40,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:40,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723084678] [2020-10-12 20:59:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:40,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:45,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:45,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:59:45,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:59:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:59:45,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:59:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:59:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:45,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:45,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:45,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:45,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:45,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:45,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:45,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-12 20:59:45,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723084678] [2020-10-12 20:59:45,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:45,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:45,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341743574] [2020-10-12 20:59:45,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:45,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:45,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:45,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:45,594 INFO L87 Difference]: Start difference. First operand 785 states and 1286 transitions. Second operand 5 states. [2020-10-12 20:59:46,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:46,151 INFO L93 Difference]: Finished difference Result 1550 states and 2549 transitions. [2020-10-12 20:59:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:46,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:59:46,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:46,156 INFO L225 Difference]: With dead ends: 1550 [2020-10-12 20:59:46,156 INFO L226 Difference]: Without dead ends: 789 [2020-10-12 20:59:46,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:46,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-10-12 20:59:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 785. [2020-10-12 20:59:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-10-12 20:59:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1285 transitions. [2020-10-12 20:59:46,178 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1285 transitions. Word has length 108 [2020-10-12 20:59:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:46,179 INFO L479 AbstractCegarLoop]: Abstraction has 785 states and 1285 transitions. [2020-10-12 20:59:46,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1285 transitions. [2020-10-12 20:59:46,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:59:46,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:46,180 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:46,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:59:46,181 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:46,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1356781916, now seen corresponding path program 1 times [2020-10-12 20:59:46,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:46,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751012960] [2020-10-12 20:59:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:46,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:49,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:49,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:59:49,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:59:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3381 [2020-10-12 20:59:49,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:59:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 20:59:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:49,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:49,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:49,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:49,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:49,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:49,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:49,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 15 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:59:49,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751012960] [2020-10-12 20:59:49,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:49,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:59:49,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624527749] [2020-10-12 20:59:49,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:59:49,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:49,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:59:49,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:59:49,739 INFO L87 Difference]: Start difference. First operand 785 states and 1285 transitions. Second operand 9 states. [2020-10-12 20:59:51,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:51,853 INFO L93 Difference]: Finished difference Result 2291 states and 3771 transitions. [2020-10-12 20:59:51,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:59:51,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-12 20:59:51,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:51,860 INFO L225 Difference]: With dead ends: 2291 [2020-10-12 20:59:51,860 INFO L226 Difference]: Without dead ends: 1530 [2020-10-12 20:59:51,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:59:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-10-12 20:59:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1443. [2020-10-12 20:59:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-10-12 20:59:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2405 transitions. [2020-10-12 20:59:51,897 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2405 transitions. Word has length 109 [2020-10-12 20:59:51,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:51,898 INFO L479 AbstractCegarLoop]: Abstraction has 1443 states and 2405 transitions. [2020-10-12 20:59:51,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:59:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2405 transitions. [2020-10-12 20:59:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:59:51,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:51,901 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:51,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:59:51,901 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:51,902 INFO L82 PathProgramCache]: Analyzing trace with hash 687904663, now seen corresponding path program 1 times [2020-10-12 20:59:51,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:51,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518374762] [2020-10-12 20:59:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:51,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:51,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:53,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:53,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:59:53,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:59:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-12 20:59:53,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:59:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:53,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:53,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:53,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:53,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:53,392 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 20:59:53,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518374762] [2020-10-12 20:59:53,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:53,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:53,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272621083] [2020-10-12 20:59:53,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:53,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:53,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:53,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:53,393 INFO L87 Difference]: Start difference. First operand 1443 states and 2405 transitions. Second operand 5 states. [2020-10-12 20:59:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:54,340 INFO L93 Difference]: Finished difference Result 3217 states and 5339 transitions. [2020-10-12 20:59:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:54,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-12 20:59:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:54,349 INFO L225 Difference]: With dead ends: 3217 [2020-10-12 20:59:54,349 INFO L226 Difference]: Without dead ends: 1799 [2020-10-12 20:59:54,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2020-10-12 20:59:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1559. [2020-10-12 20:59:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-10-12 20:59:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2605 transitions. [2020-10-12 20:59:54,392 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2605 transitions. Word has length 115 [2020-10-12 20:59:54,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:54,392 INFO L479 AbstractCegarLoop]: Abstraction has 1559 states and 2605 transitions. [2020-10-12 20:59:54,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:54,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2605 transitions. [2020-10-12 20:59:54,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:59:54,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:54,396 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:54,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:59:54,396 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2010180844, now seen corresponding path program 1 times [2020-10-12 20:59:54,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:54,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616267468] [2020-10-12 20:59:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:54,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:54,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:55,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:55,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:55,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:59:55,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:59:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-12 20:59:55,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:59:55,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:55,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:55,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:55,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:55,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:55,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:55,644 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 20:59:55,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616267468] [2020-10-12 20:59:55,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:55,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:55,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88484154] [2020-10-12 20:59:55,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:55,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:55,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:55,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:55,646 INFO L87 Difference]: Start difference. First operand 1559 states and 2605 transitions. Second operand 5 states. [2020-10-12 20:59:56,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:56,574 INFO L93 Difference]: Finished difference Result 3302 states and 5484 transitions. [2020-10-12 20:59:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:56,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:59:56,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:56,581 INFO L225 Difference]: With dead ends: 3302 [2020-10-12 20:59:56,581 INFO L226 Difference]: Without dead ends: 1768 [2020-10-12 20:59:56,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:56,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2020-10-12 20:59:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1563. [2020-10-12 20:59:56,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-10-12 20:59:56,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2609 transitions. [2020-10-12 20:59:56,632 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2609 transitions. Word has length 116 [2020-10-12 20:59:56,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:56,632 INFO L479 AbstractCegarLoop]: Abstraction has 1563 states and 2609 transitions. [2020-10-12 20:59:56,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:56,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2609 transitions. [2020-10-12 20:59:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 20:59:56,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:56,636 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:56,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:59:56,636 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:56,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:56,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1171274215, now seen corresponding path program 1 times [2020-10-12 20:59:56,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:56,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886866099] [2020-10-12 20:59:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:56,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:57,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 20:59:57,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:59:57,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-12 20:59:57,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:57,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:57,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:57,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:59:57,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:57,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:57,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:57,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:57,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:57,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:57,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:59:57,116 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 20:59:57,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886866099] [2020-10-12 20:59:57,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:57,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:57,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770650023] [2020-10-12 20:59:57,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:57,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:57,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:57,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:57,118 INFO L87 Difference]: Start difference. First operand 1563 states and 2609 transitions. Second operand 5 states. [2020-10-12 20:59:58,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:58,032 INFO L93 Difference]: Finished difference Result 3294 states and 5468 transitions. [2020-10-12 20:59:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:58,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-12 20:59:58,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:58,038 INFO L225 Difference]: With dead ends: 3294 [2020-10-12 20:59:58,039 INFO L226 Difference]: Without dead ends: 1756 [2020-10-12 20:59:58,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2020-10-12 20:59:58,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1575. [2020-10-12 20:59:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-10-12 20:59:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2629 transitions. [2020-10-12 20:59:58,080 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2629 transitions. Word has length 118 [2020-10-12 20:59:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:58,080 INFO L479 AbstractCegarLoop]: Abstraction has 1575 states and 2629 transitions. [2020-10-12 20:59:58,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2629 transitions. [2020-10-12 20:59:58,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:59:58,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:58,083 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:58,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:59:58,084 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:58,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1964762925, now seen corresponding path program 1 times [2020-10-12 20:59:58,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:58,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870479069] [2020-10-12 20:59:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:58,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:03,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 21:00:03,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:00:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:00:03,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 21:00:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:00:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:03,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:03,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:03,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:03,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:03,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:03,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:03,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-12 21:00:03,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870479069] [2020-10-12 21:00:03,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:03,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:03,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771608324] [2020-10-12 21:00:03,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:03,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:03,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:03,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:03,164 INFO L87 Difference]: Start difference. First operand 1575 states and 2629 transitions. Second operand 5 states. [2020-10-12 21:00:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:04,107 INFO L93 Difference]: Finished difference Result 3349 states and 5551 transitions. [2020-10-12 21:00:04,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:04,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 21:00:04,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:04,115 INFO L225 Difference]: With dead ends: 3349 [2020-10-12 21:00:04,115 INFO L226 Difference]: Without dead ends: 1799 [2020-10-12 21:00:04,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:04,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2020-10-12 21:00:04,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1575. [2020-10-12 21:00:04,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-10-12 21:00:04,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2625 transitions. [2020-10-12 21:00:04,167 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2625 transitions. Word has length 120 [2020-10-12 21:00:04,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:04,167 INFO L479 AbstractCegarLoop]: Abstraction has 1575 states and 2625 transitions. [2020-10-12 21:00:04,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2625 transitions. [2020-10-12 21:00:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 21:00:04,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:04,171 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] [2020-10-12 21:00:04,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 21:00:04,171 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:04,171 INFO L82 PathProgramCache]: Analyzing trace with hash -811866057, now seen corresponding path program 1 times [2020-10-12 21:00:04,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:04,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282695217] [2020-10-12 21:00:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:05,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:05,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 21:00:05,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:05,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1481 [2020-10-12 21:00:05,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 21:00:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:05,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:05,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:05,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:05,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:05,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:05,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:05,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:05,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:00:05,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282695217] [2020-10-12 21:00:05,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:05,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:05,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174597544] [2020-10-12 21:00:05,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:05,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:05,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:05,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:05,769 INFO L87 Difference]: Start difference. First operand 1575 states and 2625 transitions. Second operand 5 states. [2020-10-12 21:00:06,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:06,651 INFO L93 Difference]: Finished difference Result 3306 states and 5476 transitions. [2020-10-12 21:00:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:06,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 21:00:06,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:06,658 INFO L225 Difference]: With dead ends: 3306 [2020-10-12 21:00:06,659 INFO L226 Difference]: Without dead ends: 1756 [2020-10-12 21:00:06,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2020-10-12 21:00:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1579. [2020-10-12 21:00:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-10-12 21:00:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2629 transitions. [2020-10-12 21:00:06,706 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2629 transitions. Word has length 120 [2020-10-12 21:00:06,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:06,707 INFO L479 AbstractCegarLoop]: Abstraction has 1579 states and 2629 transitions. [2020-10-12 21:00:06,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2629 transitions. [2020-10-12 21:00:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 21:00:06,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:06,710 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:06,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 21:00:06,710 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:06,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:06,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1381864240, now seen corresponding path program 1 times [2020-10-12 21:00:06,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:06,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063397188] [2020-10-12 21:00:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:11,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:11,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 21:00:11,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:00:11,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 21:00:11,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 21:00:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 21:00:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:11,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:11,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:11,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:11,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:11,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:11,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:11,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 21:00:11,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063397188] [2020-10-12 21:00:11,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:11,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:11,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101630859] [2020-10-12 21:00:11,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:11,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:11,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:11,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:11,807 INFO L87 Difference]: Start difference. First operand 1579 states and 2629 transitions. Second operand 5 states. [2020-10-12 21:00:12,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:12,588 INFO L93 Difference]: Finished difference Result 3229 states and 5354 transitions. [2020-10-12 21:00:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:12,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 21:00:12,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:12,598 INFO L225 Difference]: With dead ends: 3229 [2020-10-12 21:00:12,598 INFO L226 Difference]: Without dead ends: 1675 [2020-10-12 21:00:12,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:12,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2020-10-12 21:00:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1579. [2020-10-12 21:00:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-10-12 21:00:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2625 transitions. [2020-10-12 21:00:12,642 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2625 transitions. Word has length 121 [2020-10-12 21:00:12,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:12,642 INFO L479 AbstractCegarLoop]: Abstraction has 1579 states and 2625 transitions. [2020-10-12 21:00:12,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2625 transitions. [2020-10-12 21:00:12,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 21:00:12,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:12,644 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] [2020-10-12 21:00:12,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 21:00:12,645 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:12,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:12,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1741428396, now seen corresponding path program 1 times [2020-10-12 21:00:12,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:12,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952398505] [2020-10-12 21:00:12,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:12,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:12,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:13,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:13,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 21:00:13,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-10-12 21:00:13,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 21:00:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:13,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:13,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:13,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:13,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:13,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:13,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:00:13,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952398505] [2020-10-12 21:00:13,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:13,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:13,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196104452] [2020-10-12 21:00:13,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:13,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:13,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:13,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:13,756 INFO L87 Difference]: Start difference. First operand 1579 states and 2625 transitions. Second operand 5 states. [2020-10-12 21:00:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:14,657 INFO L93 Difference]: Finished difference Result 3310 states and 5468 transitions. [2020-10-12 21:00:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:14,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 21:00:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:14,661 INFO L225 Difference]: With dead ends: 3310 [2020-10-12 21:00:14,662 INFO L226 Difference]: Without dead ends: 1756 [2020-10-12 21:00:14,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2020-10-12 21:00:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1587. [2020-10-12 21:00:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-10-12 21:00:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2637 transitions. [2020-10-12 21:00:14,702 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2637 transitions. Word has length 121 [2020-10-12 21:00:14,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:14,703 INFO L479 AbstractCegarLoop]: Abstraction has 1587 states and 2637 transitions. [2020-10-12 21:00:14,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2637 transitions. [2020-10-12 21:00:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 21:00:14,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:14,706 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] [2020-10-12 21:00:14,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 21:00:14,706 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:14,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1087100899, now seen corresponding path program 1 times [2020-10-12 21:00:14,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:14,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643772441] [2020-10-12 21:00:14,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:14,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:14,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:14,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:15,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:16,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:16,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 21:00:16,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:16,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1274 [2020-10-12 21:00:16,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:00:16,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:16,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:16,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:16,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:16,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:16,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:16,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:16,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:00:16,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643772441] [2020-10-12 21:00:16,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:16,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:16,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507429101] [2020-10-12 21:00:16,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:16,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:16,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:16,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:16,092 INFO L87 Difference]: Start difference. First operand 1587 states and 2637 transitions. Second operand 5 states. [2020-10-12 21:00:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:17,029 INFO L93 Difference]: Finished difference Result 3302 states and 5456 transitions. [2020-10-12 21:00:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:17,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 21:00:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:17,033 INFO L225 Difference]: With dead ends: 3302 [2020-10-12 21:00:17,033 INFO L226 Difference]: Without dead ends: 1740 [2020-10-12 21:00:17,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2020-10-12 21:00:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1587. [2020-10-12 21:00:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-10-12 21:00:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2633 transitions. [2020-10-12 21:00:17,077 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2633 transitions. Word has length 121 [2020-10-12 21:00:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:17,077 INFO L479 AbstractCegarLoop]: Abstraction has 1587 states and 2633 transitions. [2020-10-12 21:00:17,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2633 transitions. [2020-10-12 21:00:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 21:00:17,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:17,079 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] [2020-10-12 21:00:17,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 21:00:17,079 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:17,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1272902618, now seen corresponding path program 1 times [2020-10-12 21:00:17,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:17,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995081340] [2020-10-12 21:00:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:18,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:18,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 21:00:18,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-10-12 21:00:18,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 21:00:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:18,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:18,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:18,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:18,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:18,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:00:18,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995081340] [2020-10-12 21:00:18,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:18,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:18,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434748808] [2020-10-12 21:00:18,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:18,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:18,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:18,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:18,256 INFO L87 Difference]: Start difference. First operand 1587 states and 2633 transitions. Second operand 5 states. [2020-10-12 21:00:19,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:19,145 INFO L93 Difference]: Finished difference Result 3294 states and 5440 transitions. [2020-10-12 21:00:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:19,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 21:00:19,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:19,150 INFO L225 Difference]: With dead ends: 3294 [2020-10-12 21:00:19,150 INFO L226 Difference]: Without dead ends: 1732 [2020-10-12 21:00:19,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:19,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-10-12 21:00:19,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1591. [2020-10-12 21:00:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-10-12 21:00:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2637 transitions. [2020-10-12 21:00:19,203 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2637 transitions. Word has length 122 [2020-10-12 21:00:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:19,203 INFO L479 AbstractCegarLoop]: Abstraction has 1591 states and 2637 transitions. [2020-10-12 21:00:19,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:19,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2637 transitions. [2020-10-12 21:00:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 21:00:19,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:19,207 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:19,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 21:00:19,207 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:19,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1297880853, now seen corresponding path program 1 times [2020-10-12 21:00:19,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:19,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591700398] [2020-10-12 21:00:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:19,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:19,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:19,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:20,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:24,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:24,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 21:00:24,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 21:00:24,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-12 21:00:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 21:00:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:24,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:24,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:24,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:24,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:24,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:24,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-12 21:00:24,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591700398] [2020-10-12 21:00:24,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:24,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:24,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490270809] [2020-10-12 21:00:24,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:24,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:24,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:24,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:24,313 INFO L87 Difference]: Start difference. First operand 1591 states and 2637 transitions. Second operand 5 states. [2020-10-12 21:00:25,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:25,168 INFO L93 Difference]: Finished difference Result 3240 states and 5341 transitions. [2020-10-12 21:00:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:25,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 21:00:25,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:25,173 INFO L225 Difference]: With dead ends: 3240 [2020-10-12 21:00:25,173 INFO L226 Difference]: Without dead ends: 1674 [2020-10-12 21:00:25,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-10-12 21:00:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1554. [2020-10-12 21:00:25,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-12 21:00:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2564 transitions. [2020-10-12 21:00:25,225 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2564 transitions. Word has length 123 [2020-10-12 21:00:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:25,225 INFO L479 AbstractCegarLoop]: Abstraction has 1554 states and 2564 transitions. [2020-10-12 21:00:25,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2564 transitions. [2020-10-12 21:00:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 21:00:25,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:25,229 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-10-12 21:00:25,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 21:00:25,229 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:25,229 INFO L82 PathProgramCache]: Analyzing trace with hash -765694635, now seen corresponding path program 1 times [2020-10-12 21:00:25,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:25,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865076518] [2020-10-12 21:00:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:25,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:25,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:30,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:30,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 21:00:30,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:00:30,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 21:00:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 21:00:30,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:30,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:30,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:30,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:30,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:30,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:00:30,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:30,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:30,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:30,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:30,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 37 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 21:00:30,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865076518] [2020-10-12 21:00:30,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:00:30,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 21:00:30,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926066378] [2020-10-12 21:00:30,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 21:00:30,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:30,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 21:00:30,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:00:30,522 INFO L87 Difference]: Start difference. First operand 1554 states and 2564 transitions. Second operand 9 states. [2020-10-12 21:00:33,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:33,239 INFO L93 Difference]: Finished difference Result 2753 states and 4483 transitions. [2020-10-12 21:00:33,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:00:33,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-10-12 21:00:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:33,244 INFO L225 Difference]: With dead ends: 2753 [2020-10-12 21:00:33,244 INFO L226 Difference]: Without dead ends: 1926 [2020-10-12 21:00:33,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 21:00:33,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2020-10-12 21:00:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1554. [2020-10-12 21:00:33,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-12 21:00:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2563 transitions. [2020-10-12 21:00:33,297 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2563 transitions. Word has length 123 [2020-10-12 21:00:33,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:33,297 INFO L479 AbstractCegarLoop]: Abstraction has 1554 states and 2563 transitions. [2020-10-12 21:00:33,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 21:00:33,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2563 transitions. [2020-10-12 21:00:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 21:00:33,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:33,300 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] [2020-10-12 21:00:33,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 21:00:33,301 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:33,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:33,301 INFO L82 PathProgramCache]: Analyzing trace with hash 2027393169, now seen corresponding path program 1 times [2020-10-12 21:00:33,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:33,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327482055] [2020-10-12 21:00:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:33,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 21:00:33,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:00:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-12 21:00:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 21:00:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:33,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:33,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:33,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:33,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:33,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:33,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:33,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:33,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:00:33,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327482055] [2020-10-12 21:00:33,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:33,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:33,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831202824] [2020-10-12 21:00:33,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:33,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:33,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:33,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:33,803 INFO L87 Difference]: Start difference. First operand 1554 states and 2563 transitions. Second operand 5 states. [2020-10-12 21:00:34,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:34,717 INFO L93 Difference]: Finished difference Result 3224 states and 5292 transitions. [2020-10-12 21:00:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:34,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 21:00:34,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:34,720 INFO L225 Difference]: With dead ends: 3224 [2020-10-12 21:00:34,721 INFO L226 Difference]: Without dead ends: 1695 [2020-10-12 21:00:34,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2020-10-12 21:00:34,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1558. [2020-10-12 21:00:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-10-12 21:00:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2567 transitions. [2020-10-12 21:00:34,772 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2567 transitions. Word has length 123 [2020-10-12 21:00:34,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:34,773 INFO L479 AbstractCegarLoop]: Abstraction has 1558 states and 2567 transitions. [2020-10-12 21:00:34,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2567 transitions. [2020-10-12 21:00:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 21:00:34,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:34,776 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] [2020-10-12 21:00:34,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 21:00:34,776 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:34,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:34,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1701147786, now seen corresponding path program 1 times [2020-10-12 21:00:34,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:34,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974044990] [2020-10-12 21:00:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:39,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:39,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 21:00:39,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:39,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 21:00:39,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 21:00:39,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:39,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 21:00:39,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:40,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:40,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:40,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:40,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:40,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:40,048 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 21:00:40,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974044990] [2020-10-12 21:00:40,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:00:40,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 21:00:40,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754225345] [2020-10-12 21:00:40,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:00:40,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:40,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:00:40,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:00:40,050 INFO L87 Difference]: Start difference. First operand 1558 states and 2567 transitions. Second operand 10 states. [2020-10-12 21:00:42,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:42,594 INFO L93 Difference]: Finished difference Result 2816 states and 4610 transitions. [2020-10-12 21:00:42,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:00:42,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-12 21:00:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:42,600 INFO L225 Difference]: With dead ends: 2816 [2020-10-12 21:00:42,600 INFO L226 Difference]: Without dead ends: 1997 [2020-10-12 21:00:42,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:00:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-10-12 21:00:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1906. [2020-10-12 21:00:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2020-10-12 21:00:42,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 3155 transitions. [2020-10-12 21:00:42,673 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 3155 transitions. Word has length 124 [2020-10-12 21:00:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:42,676 INFO L479 AbstractCegarLoop]: Abstraction has 1906 states and 3155 transitions. [2020-10-12 21:00:42,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:00:42,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 3155 transitions. [2020-10-12 21:00:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 21:00:42,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:42,680 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] [2020-10-12 21:00:42,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 21:00:42,680 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1286228011, now seen corresponding path program 1 times [2020-10-12 21:00:42,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:42,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904830435] [2020-10-12 21:00:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:42,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:42,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:43,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:43,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 21:00:43,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:00:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-12 21:00:43,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 21:00:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:43,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:43,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:43,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:43,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:00:43,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:43,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:00:43,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904830435] [2020-10-12 21:00:43,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:43,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:43,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096893410] [2020-10-12 21:00:43,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:43,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:43,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:43,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:43,096 INFO L87 Difference]: Start difference. First operand 1906 states and 3155 transitions. Second operand 5 states. [2020-10-12 21:00:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:44,090 INFO L93 Difference]: Finished difference Result 3931 states and 6481 transitions. [2020-10-12 21:00:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:44,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 21:00:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:44,093 INFO L225 Difference]: With dead ends: 3931 [2020-10-12 21:00:44,094 INFO L226 Difference]: Without dead ends: 2050 [2020-10-12 21:00:44,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2020-10-12 21:00:44,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1889. [2020-10-12 21:00:44,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2020-10-12 21:00:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 3134 transitions. [2020-10-12 21:00:44,146 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 3134 transitions. Word has length 124 [2020-10-12 21:00:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:44,147 INFO L479 AbstractCegarLoop]: Abstraction has 1889 states and 3134 transitions. [2020-10-12 21:00:44,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 3134 transitions. [2020-10-12 21:00:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 21:00:44,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:44,150 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:44,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 21:00:44,150 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:44,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:44,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1942765992, now seen corresponding path program 1 times [2020-10-12 21:00:44,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:44,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405155854] [2020-10-12 21:00:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:44,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:44,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:46,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:49,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:49,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 21:00:49,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:49,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 21:00:49,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 21:00:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 21:00:49,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:49,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:49,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:49,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:49,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:49,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:49,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-12 21:00:49,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405155854] [2020-10-12 21:00:49,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:49,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:49,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614583869] [2020-10-12 21:00:49,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:49,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:49,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:49,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:49,271 INFO L87 Difference]: Start difference. First operand 1889 states and 3134 transitions. Second operand 5 states. [2020-10-12 21:00:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:49,975 INFO L93 Difference]: Finished difference Result 3109 states and 5132 transitions. [2020-10-12 21:00:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:49,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 21:00:49,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:49,978 INFO L225 Difference]: With dead ends: 3109 [2020-10-12 21:00:49,978 INFO L226 Difference]: Without dead ends: 1950 [2020-10-12 21:00:49,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2020-10-12 21:00:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1889. [2020-10-12 21:00:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2020-10-12 21:00:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 3129 transitions. [2020-10-12 21:00:50,018 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 3129 transitions. Word has length 125 [2020-10-12 21:00:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:50,018 INFO L479 AbstractCegarLoop]: Abstraction has 1889 states and 3129 transitions. [2020-10-12 21:00:50,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:50,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 3129 transitions. [2020-10-12 21:00:50,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 21:00:50,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:50,021 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:50,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 21:00:50,021 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:50,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:50,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1513848157, now seen corresponding path program 1 times [2020-10-12 21:00:50,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:50,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912592934] [2020-10-12 21:00:50,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:50,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:55,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:55,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 21:00:55,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:55,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 21:00:55,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:55,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:55,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-12 21:00:55,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 21:00:55,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:55,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:55,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:55,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:55,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:55,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:55,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:55,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:55,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 21:00:55,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912592934] [2020-10-12 21:00:55,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:55,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:55,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167533526] [2020-10-12 21:00:55,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:55,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:55,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:55,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:55,137 INFO L87 Difference]: Start difference. First operand 1889 states and 3129 transitions. Second operand 5 states. [2020-10-12 21:00:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:56,133 INFO L93 Difference]: Finished difference Result 3970 states and 6527 transitions. [2020-10-12 21:00:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:56,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-12 21:00:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:56,136 INFO L225 Difference]: With dead ends: 3970 [2020-10-12 21:00:56,136 INFO L226 Difference]: Without dead ends: 2106 [2020-10-12 21:00:56,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:00:56,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-10-12 21:00:56,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1889. [2020-10-12 21:00:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2020-10-12 21:00:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 3124 transitions. [2020-10-12 21:00:56,179 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 3124 transitions. Word has length 126 [2020-10-12 21:00:56,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:56,179 INFO L479 AbstractCegarLoop]: Abstraction has 1889 states and 3124 transitions. [2020-10-12 21:00:56,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 3124 transitions. [2020-10-12 21:00:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 21:00:56,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:56,181 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:56,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 21:00:56,182 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:56,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:56,182 INFO L82 PathProgramCache]: Analyzing trace with hash 887059713, now seen corresponding path program 1 times [2020-10-12 21:00:56,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:56,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443908254] [2020-10-12 21:00:56,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:56,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:56,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:57,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:01,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:01,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 21:01:01,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:01,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 21:01:01,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 21:01:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 21:01:01,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:01,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:01,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:01,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:01:01,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 21:01:01,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443908254] [2020-10-12 21:01:01,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:01,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 21:01:01,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069998533] [2020-10-12 21:01:01,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:01:01,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:01,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:01:01,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:01:01,495 INFO L87 Difference]: Start difference. First operand 1889 states and 3124 transitions. Second operand 10 states. [2020-10-12 21:01:04,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:04,062 INFO L93 Difference]: Finished difference Result 3996 states and 6586 transitions. [2020-10-12 21:01:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:01:04,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-10-12 21:01:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:04,067 INFO L225 Difference]: With dead ends: 3996 [2020-10-12 21:01:04,067 INFO L226 Difference]: Without dead ends: 2132 [2020-10-12 21:01:04,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:01:04,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-10-12 21:01:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1947. [2020-10-12 21:01:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1947 states. [2020-10-12 21:01:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 3228 transitions. [2020-10-12 21:01:04,113 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 3228 transitions. Word has length 128 [2020-10-12 21:01:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:04,113 INFO L479 AbstractCegarLoop]: Abstraction has 1947 states and 3228 transitions. [2020-10-12 21:01:04,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:01:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 3228 transitions. [2020-10-12 21:01:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 21:01:04,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:04,116 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:04,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 21:01:04,117 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:04,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:04,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1684611461, now seen corresponding path program 1 times [2020-10-12 21:01:04,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:04,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689871397] [2020-10-12 21:01:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:04,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:04,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:09,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:09,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 21:01:09,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 21:01:09,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 21:01:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 21:01:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:09,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:09,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:09,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 21:01:09,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-12 21:01:09,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689871397] [2020-10-12 21:01:09,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:09,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:09,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350001112] [2020-10-12 21:01:09,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:09,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:09,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:09,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:09,275 INFO L87 Difference]: Start difference. First operand 1947 states and 3228 transitions. Second operand 5 states. [2020-10-12 21:01:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:10,174 INFO L93 Difference]: Finished difference Result 5754 states and 9540 transitions. [2020-10-12 21:01:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:10,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 21:01:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:10,181 INFO L225 Difference]: With dead ends: 5754 [2020-10-12 21:01:10,181 INFO L226 Difference]: Without dead ends: 3832 [2020-10-12 21:01:10,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2020-10-12 21:01:10,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3830. [2020-10-12 21:01:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3830 states. [2020-10-12 21:01:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 6280 transitions. [2020-10-12 21:01:10,386 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 6280 transitions. Word has length 128 [2020-10-12 21:01:10,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:10,387 INFO L479 AbstractCegarLoop]: Abstraction has 3830 states and 6280 transitions. [2020-10-12 21:01:10,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 6280 transitions. [2020-10-12 21:01:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 21:01:10,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:10,397 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:10,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 21:01:10,397 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:10,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1656111171, now seen corresponding path program 1 times [2020-10-12 21:01:10,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:10,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169684594] [2020-10-12 21:01:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:10,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:15,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 21:01:15,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:01:15,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 21:01:15,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 21:01:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 21:01:15,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:15,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:15,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:15,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:01:15,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 21:01:15,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169684594] [2020-10-12 21:01:15,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:15,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:15,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468814144] [2020-10-12 21:01:15,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:15,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:15,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:15,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:15,576 INFO L87 Difference]: Start difference. First operand 3830 states and 6280 transitions. Second operand 5 states. [2020-10-12 21:01:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:16,902 INFO L93 Difference]: Finished difference Result 8185 states and 13418 transitions. [2020-10-12 21:01:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:16,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 21:01:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:16,910 INFO L225 Difference]: With dead ends: 8185 [2020-10-12 21:01:16,910 INFO L226 Difference]: Without dead ends: 4396 [2020-10-12 21:01:16,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:16,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2020-10-12 21:01:17,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 3100. [2020-10-12 21:01:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3100 states. [2020-10-12 21:01:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 5012 transitions. [2020-10-12 21:01:17,049 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 5012 transitions. Word has length 128 [2020-10-12 21:01:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:17,050 INFO L479 AbstractCegarLoop]: Abstraction has 3100 states and 5012 transitions. [2020-10-12 21:01:17,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:17,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 5012 transitions. [2020-10-12 21:01:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 21:01:17,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:17,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:17,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 21:01:17,056 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:17,056 INFO L82 PathProgramCache]: Analyzing trace with hash -232991733, now seen corresponding path program 1 times [2020-10-12 21:01:17,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:17,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172330587] [2020-10-12 21:01:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:17,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:17,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:17,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 21:01:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:01:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-12 21:01:17,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 21:01:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 21:01:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:17,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:17,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:17,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:17,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:17,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:17,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:17,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 21:01:17,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172330587] [2020-10-12 21:01:17,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:17,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:17,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581965246] [2020-10-12 21:01:17,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:17,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:17,686 INFO L87 Difference]: Start difference. First operand 3100 states and 5012 transitions. Second operand 5 states. [2020-10-12 21:01:18,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:18,817 INFO L93 Difference]: Finished difference Result 4115 states and 6619 transitions. [2020-10-12 21:01:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:18,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-12 21:01:18,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:18,821 INFO L225 Difference]: With dead ends: 4115 [2020-10-12 21:01:18,821 INFO L226 Difference]: Without dead ends: 3309 [2020-10-12 21:01:18,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:18,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2020-10-12 21:01:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 3177. [2020-10-12 21:01:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3177 states. [2020-10-12 21:01:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5149 transitions. [2020-10-12 21:01:18,926 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5149 transitions. Word has length 130 [2020-10-12 21:01:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:18,927 INFO L479 AbstractCegarLoop]: Abstraction has 3177 states and 5149 transitions. [2020-10-12 21:01:18,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5149 transitions. [2020-10-12 21:01:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 21:01:18,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:18,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:18,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 21:01:18,931 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:18,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1016997341, now seen corresponding path program 1 times [2020-10-12 21:01:18,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:18,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206338023] [2020-10-12 21:01:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:19,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 21:01:19,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:01:19,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 21:01:19,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 21:01:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 21:01:19,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:19,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:19,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:19,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:19,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:19,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:19,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:19,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:19,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:19,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 21:01:19,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206338023] [2020-10-12 21:01:19,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:19,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:19,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898388493] [2020-10-12 21:01:19,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:19,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:19,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:19,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:19,292 INFO L87 Difference]: Start difference. First operand 3177 states and 5149 transitions. Second operand 5 states. [2020-10-12 21:01:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:20,431 INFO L93 Difference]: Finished difference Result 4176 states and 6729 transitions. [2020-10-12 21:01:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:01:20,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-12 21:01:20,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:20,436 INFO L225 Difference]: With dead ends: 4176 [2020-10-12 21:01:20,436 INFO L226 Difference]: Without dead ends: 3293 [2020-10-12 21:01:20,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:20,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2020-10-12 21:01:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3163. [2020-10-12 21:01:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-10-12 21:01:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 5123 transitions. [2020-10-12 21:01:20,515 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 5123 transitions. Word has length 131 [2020-10-12 21:01:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:20,516 INFO L479 AbstractCegarLoop]: Abstraction has 3163 states and 5123 transitions. [2020-10-12 21:01:20,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:20,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 5123 transitions. [2020-10-12 21:01:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-12 21:01:20,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:20,520 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:20,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 21:01:20,520 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:20,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:20,521 INFO L82 PathProgramCache]: Analyzing trace with hash -88741106, now seen corresponding path program 1 times [2020-10-12 21:01:20,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:20,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720094994] [2020-10-12 21:01:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:20,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:25,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 21:01:25,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 21:01:25,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 21:01:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 21:01:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:25,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:25,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:25,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:25,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:25,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:25,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:25,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 21:01:25,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720094994] [2020-10-12 21:01:25,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:25,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 21:01:25,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346400787] [2020-10-12 21:01:25,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:01:25,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:25,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:01:25,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:01:25,843 INFO L87 Difference]: Start difference. First operand 3163 states and 5123 transitions. Second operand 10 states. [2020-10-12 21:01:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:29,334 INFO L93 Difference]: Finished difference Result 7317 states and 11821 transitions. [2020-10-12 21:01:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:01:29,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2020-10-12 21:01:29,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:29,339 INFO L225 Difference]: With dead ends: 7317 [2020-10-12 21:01:29,339 INFO L226 Difference]: Without dead ends: 4195 [2020-10-12 21:01:29,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:01:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2020-10-12 21:01:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 3497. [2020-10-12 21:01:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3497 states. [2020-10-12 21:01:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 5701 transitions. [2020-10-12 21:01:29,430 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 5701 transitions. Word has length 136 [2020-10-12 21:01:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:29,430 INFO L479 AbstractCegarLoop]: Abstraction has 3497 states and 5701 transitions. [2020-10-12 21:01:29,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:01:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 5701 transitions. [2020-10-12 21:01:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-12 21:01:29,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:29,434 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:29,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 21:01:29,435 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:29,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1193799482, now seen corresponding path program 1 times [2020-10-12 21:01:29,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:29,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319008842] [2020-10-12 21:01:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:34,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 21:01:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:01:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 21:01:34,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 21:01:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 21:01:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:34,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:34,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:34,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:34,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:01:34,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 21:01:34,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319008842] [2020-10-12 21:01:34,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:34,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 21:01:34,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494390507] [2020-10-12 21:01:34,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 21:01:34,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:34,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 21:01:34,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:01:34,694 INFO L87 Difference]: Start difference. First operand 3497 states and 5701 transitions. Second operand 9 states.