/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 SingleStatement --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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:43:44,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:43:44,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:43:44,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:43:44,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:43:44,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:43:44,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:43:44,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:43:44,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:43:44,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:43:44,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:43:44,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:43:44,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:43:44,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:43:44,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:43:44,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:43:44,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:43:44,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:43:44,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:43:44,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:43:44,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:43:44,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:43:44,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:43:44,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:43:44,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:43:44,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:43:44,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:43:44,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:43:44,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:43:44,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:43:44,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:43:44,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:43:44,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:43:44,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:43:44,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:43:44,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:43:44,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:43:44,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:43:44,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:43:44,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:43:44,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:43:44,977 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 [2020-09-24 22:43:45,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:43:45,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:43:45,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:43:45,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:43:45,006 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:43:45,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:43:45,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:43:45,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:43:45,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:43:45,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:43:45,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:43:45,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:43:45,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:43:45,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:43:45,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:43:45,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:43:45,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:43:45,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:43:45,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:43:45,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:43:45,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:43:45,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:43:45,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:43:45,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:43:45,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:43:45,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:43:45,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:43:45,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:43:45,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:43:45,012 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 -> SingleStatement 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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:43:45,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:43:45,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:43:45,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:43:45,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:43:45,501 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:43:45,503 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-24 22:43:45,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd0649ce4/0d2d05476ed742539653b149dac59d90/FLAG4d8ee77e8 [2020-09-24 22:43:46,226 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:43:46,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-24 22:43:46,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd0649ce4/0d2d05476ed742539653b149dac59d90/FLAG4d8ee77e8 [2020-09-24 22:43:46,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd0649ce4/0d2d05476ed742539653b149dac59d90 [2020-09-24 22:43:46,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:43:46,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:43:46,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:43:46,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:43:46,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:43:46,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:43:46" (1/1) ... [2020-09-24 22:43:46,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78985504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:46, skipping insertion in model container [2020-09-24 22:43:46,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:43:46" (1/1) ... [2020-09-24 22:43:46,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:43:46,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:43:47,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:43:47,064 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:43:47,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:43:47,228 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:43:47,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:47 WrapperNode [2020-09-24 22:43:47,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:43:47,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:43:47,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:43:47,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:43:47,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:47" (1/1) ... [2020-09-24 22:43:47,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:47" (1/1) ... [2020-09-24 22:43:47,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:47" (1/1) ... [2020-09-24 22:43:47,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:47" (1/1) ... [2020-09-24 22:43:47,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:47" (1/1) ... [2020-09-24 22:43:47,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:47" (1/1) ... [2020-09-24 22:43:47,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:47" (1/1) ... [2020-09-24 22:43:47,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:43:47,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:43:47,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:43:47,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:43:47,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:47" (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 [2020-09-24 22:43:47,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:43:47,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:43:47,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 22:43:47,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-09-24 22:43:47,405 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-09-24 22:43:47,405 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-24 22:43:47,405 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-09-24 22:43:47,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:43:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:43:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 22:43:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-24 22:43:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-24 22:43:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-24 22:43:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-24 22:43:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-24 22:43:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-24 22:43:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-24 22:43:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-24 22:43:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-24 22:43:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-24 22:43:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-24 22:43:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-24 22:43:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-24 22:43:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-24 22:43:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-24 22:43:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-24 22:43:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-24 22:43:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-24 22:43:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-24 22:43:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-24 22:43:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-24 22:43:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-24 22:43:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-24 22:43:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-24 22:43:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-24 22:43:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-24 22:43:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-24 22:43:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-24 22:43:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-24 22:43:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-24 22:43:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-24 22:43:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-24 22:43:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-24 22:43:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-24 22:43:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-24 22:43:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-24 22:43:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-24 22:43:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-24 22:43:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 22:43:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-24 22:43:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-24 22:43:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-24 22:43:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-24 22:43:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-24 22:43:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-24 22:43:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-24 22:43:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-24 22:43:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-24 22:43:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-24 22:43:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-24 22:43:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-24 22:43:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-24 22:43:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-24 22:43:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-24 22:43:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-24 22:43:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-24 22:43:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-24 22:43:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-24 22:43:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-24 22:43:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-24 22:43:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-24 22:43:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-24 22:43:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-24 22:43:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-24 22:43:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-24 22:43:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-24 22:43:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-24 22:43:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-24 22:43:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-24 22:43:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-24 22:43:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-24 22:43:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-24 22:43:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-24 22:43:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-24 22:43:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-24 22:43:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-24 22:43:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-24 22:43:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-24 22:43:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-24 22:43:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-24 22:43:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-24 22:43:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-24 22:43:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-24 22:43:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-24 22:43:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-24 22:43:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-24 22:43:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-24 22:43:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-24 22:43:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-24 22:43:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-24 22:43:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-24 22:43:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-24 22:43:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-24 22:43:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-24 22:43:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-24 22:43:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-24 22:43:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-24 22:43:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-24 22:43:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-24 22:43:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-24 22:43:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-24 22:43:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:43:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 22:43:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 22:43:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:43:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 22:43:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-09-24 22:43:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 22:43:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-09-24 22:43:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-09-24 22:43:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-09-24 22:43:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-09-24 22:43:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-09-24 22:43:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-09-24 22:43:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-09-24 22:43:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-09-24 22:43:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-09-24 22:43:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-09-24 22:43:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-09-24 22:43:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:43:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-09-24 22:43:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-09-24 22:43:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-24 22:43:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-09-24 22:43:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:43:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:43:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:43:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 22:43:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:43:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:43:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:43:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:43:48,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:43:48,048 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:43:48,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:43:48 BoogieIcfgContainer [2020-09-24 22:43:48,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:43:48,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:43:48,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:43:48,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:43:48,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:43:46" (1/3) ... [2020-09-24 22:43:48,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b884588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:43:48, skipping insertion in model container [2020-09-24 22:43:48,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:47" (2/3) ... [2020-09-24 22:43:48,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b884588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:43:48, skipping insertion in model container [2020-09-24 22:43:48,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:43:48" (3/3) ... [2020-09-24 22:43:48,068 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-09-24 22:43:48,082 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:43:48,093 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:43:48,120 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:43:48,158 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:43:48,158 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:43:48,159 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:43:48,159 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:43:48,159 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:43:48,159 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:43:48,159 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:43:48,159 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:43:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-09-24 22:43:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 22:43:48,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:48,196 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] [2020-09-24 22:43:48,196 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:48,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:48,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1490968618, now seen corresponding path program 1 times [2020-09-24 22:43:48,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:48,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015714047] [2020-09-24 22:43:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:48,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:48,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:48,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:43:48,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:48,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-24 22:43:48,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:43:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:43:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:43:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:43:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:48,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:48,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:48,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 22:43:48,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 22:43:48,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:48,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015714047] [2020-09-24 22:43:48,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:43:48,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:43:49,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700835617] [2020-09-24 22:43:49,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:43:49,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:49,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:43:49,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:43:49,032 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 7 states. [2020-09-24 22:43:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:49,576 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2020-09-24 22:43:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:43:49,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-09-24 22:43:49,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:49,595 INFO L225 Difference]: With dead ends: 128 [2020-09-24 22:43:49,595 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 22:43:49,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:43:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 22:43:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-09-24 22:43:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 22:43:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-24 22:43:49,668 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 21 [2020-09-24 22:43:49,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:49,669 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-24 22:43:49,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:43:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-24 22:43:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 22:43:49,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:49,673 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:43:49,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:43:49,674 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:49,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:49,675 INFO L82 PathProgramCache]: Analyzing trace with hash -114203518, now seen corresponding path program 1 times [2020-09-24 22:43:49,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:49,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059988281] [2020-09-24 22:43:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:49,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:50,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:54,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 22:43:54,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:43:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4308 [2020-09-24 22:43:54,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:43:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-24 22:43:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:43:54,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:43:54,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:54,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:54,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:54,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 22:43:54,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 22:43:54,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:54,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:43:54,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:43:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:54,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:54,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:43:54,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:43:54,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:54,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 22:43:54,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:43:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:54,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:54,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:43:54,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:54,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:43:54,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:54,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 22:43:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:54,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:54,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:54,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:43:54,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:54,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 22:43:54,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:43:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 22:43:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:54,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:43:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:54,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:54,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:54,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:43:54,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 22:43:54,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:43:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:43:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:43:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 22:43:54,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059988281] [2020-09-24 22:43:54,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:43:54,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:43:54,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938834060] [2020-09-24 22:43:54,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:43:54,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:54,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:43:54,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:43:54,585 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 9 states. [2020-09-24 22:43:55,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:55,030 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-09-24 22:43:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:43:55,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-24 22:43:55,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:55,034 INFO L225 Difference]: With dead ends: 99 [2020-09-24 22:43:55,034 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 22:43:55,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:43:55,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 22:43:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-09-24 22:43:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 22:43:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-09-24 22:43:55,052 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 61 [2020-09-24 22:43:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:55,052 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-09-24 22:43:55,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:43:55,053 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-09-24 22:43:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 22:43:55,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:55,055 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:43:55,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:43:55,056 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:55,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:55,057 INFO L82 PathProgramCache]: Analyzing trace with hash -577094017, now seen corresponding path program 1 times [2020-09-24 22:43:55,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:55,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670242448] [2020-09-24 22:43:55,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:55,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:57,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:57,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 22:43:57,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:43:57,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2828 [2020-09-24 22:43:57,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:57,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:43:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 22:43:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 22:43:57,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:43:57,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:57,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:58,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:58,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 22:43:58,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:58,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:43:58,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:43:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:58,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:58,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:43:58,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 22:43:58,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:43:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 22:43:58,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:43:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:58,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:58,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:43:58,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:58,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 22:43:58,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:43:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:43:58,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:58,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 22:43:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:58,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:58,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:58,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:43:58,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 22:43:58,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:43:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:43:58,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:58,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:43:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:58,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:58,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:43:58,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:58,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:43:58,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:58,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:58,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:58,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:58,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 22:43:58,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670242448] [2020-09-24 22:43:58,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:58,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:43:58,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736410933] [2020-09-24 22:43:58,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:43:58,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:58,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:43:58,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:43:58,318 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 9 states. [2020-09-24 22:43:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:58,619 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-09-24 22:43:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:43:58,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-24 22:43:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:58,621 INFO L225 Difference]: With dead ends: 102 [2020-09-24 22:43:58,621 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 22:43:58,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:43:58,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 22:43:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-09-24 22:43:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 22:43:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-09-24 22:43:58,633 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 61 [2020-09-24 22:43:58,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:58,633 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-09-24 22:43:58,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:43:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-09-24 22:43:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 22:43:58,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:58,635 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:43:58,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:43:58,635 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:58,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:58,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1723385860, now seen corresponding path program 1 times [2020-09-24 22:43:58,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:58,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967286100] [2020-09-24 22:43:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:58,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:59,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:59,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 22:43:59,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:43:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-09-24 22:43:59,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:43:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 22:43:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 22:43:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:00,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:00,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:00,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 22:44:00,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 22:44:00,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:44:00,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:44:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:00,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:00,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:44:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 22:44:00,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:44:00,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:44:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:00,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:00,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:00,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:44:00,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:44:00,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:00,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:00,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:00,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:00,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 22:44:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:00,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:00,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:00,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:44:00,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:00,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 22:44:00,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:44:00,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:00,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:44:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:00,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:00,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:44:00,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:44:00,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 22:44:00,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967286100] [2020-09-24 22:44:00,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:00,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 22:44:00,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94107348] [2020-09-24 22:44:00,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:44:00,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:00,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:44:00,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:44:00,219 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 8 states. [2020-09-24 22:44:00,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:00,831 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2020-09-24 22:44:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:44:00,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-09-24 22:44:00,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:00,834 INFO L225 Difference]: With dead ends: 102 [2020-09-24 22:44:00,834 INFO L226 Difference]: Without dead ends: 99 [2020-09-24 22:44:00,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:44:00,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-24 22:44:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2020-09-24 22:44:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 22:44:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2020-09-24 22:44:00,850 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 61 [2020-09-24 22:44:00,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:00,851 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2020-09-24 22:44:00,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:44:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2020-09-24 22:44:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 22:44:00,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:00,852 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:44:00,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:44:00,853 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1814582916, now seen corresponding path program 1 times [2020-09-24 22:44:00,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:00,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683512219] [2020-09-24 22:44:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:01,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:02,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:02,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 22:44:02,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:44:02,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1261 [2020-09-24 22:44:02,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:44:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 22:44:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 22:44:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:02,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:02,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:02,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:02,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 22:44:02,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 22:44:02,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:44:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:02,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:44:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:02,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:02,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:02,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:44:02,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:02,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 22:44:02,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:02,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:02,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:02,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:44:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:44:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:02,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:02,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:02,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:44:02,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:44:02,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 22:44:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:02,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:02,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:44:02,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:44:02,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:02,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:02,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:02,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:44:02,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:02,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:44:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:02,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:02,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:02,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:44:02,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:02,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:44:02,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:02,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:02,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 22:44:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:02,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:02,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:02,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:44:02,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:02,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 22:44:02,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:44:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:44:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 22:44:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 22:44:02,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683512219] [2020-09-24 22:44:02,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:44:02,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:44:02,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117576964] [2020-09-24 22:44:02,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:44:02,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:02,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:44:02,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:44:02,520 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand 9 states. [2020-09-24 22:44:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:03,213 INFO L93 Difference]: Finished difference Result 110 states and 124 transitions. [2020-09-24 22:44:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:44:03,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-24 22:44:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:03,215 INFO L225 Difference]: With dead ends: 110 [2020-09-24 22:44:03,215 INFO L226 Difference]: Without dead ends: 106 [2020-09-24 22:44:03,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:44:03,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-24 22:44:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2020-09-24 22:44:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-24 22:44:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2020-09-24 22:44:03,231 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 70 [2020-09-24 22:44:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:03,231 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2020-09-24 22:44:03,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:44:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2020-09-24 22:44:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 22:44:03,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:03,233 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:44:03,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:44:03,233 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:03,233 INFO L82 PathProgramCache]: Analyzing trace with hash 983151375, now seen corresponding path program 1 times [2020-09-24 22:44:03,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:03,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581507339] [2020-09-24 22:44:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:03,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:04,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:04,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 22:44:04,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-09-24 22:44:04,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:04,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 22:44:04,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 22:44:04,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:44:04,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:44:04,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:04,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 22:44:04,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:44:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:04,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:04,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:44:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:04,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:04,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:44:04,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:04,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 22:44:04,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:44:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 22:44:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:44:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:04,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:04,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:44:04,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 22:44:04,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:44:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:44:04,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:04,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 22:44:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:04,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:04,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:44:04,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:04,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 22:44:04,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:44:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:44:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:44:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:04,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:44:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:04,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:04,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:44:04,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 22:44:04,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:44:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:44:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 22:44:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:04,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 22:44:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:04,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:04,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:44:04,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 22:44:04,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:44:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:44:04,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 22:44:04,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581507339] [2020-09-24 22:44:04,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:44:04,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 22:44:04,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526529948] [2020-09-24 22:44:04,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 22:44:04,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:04,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 22:44:04,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-09-24 22:44:04,891 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 23 states. [2020-09-24 22:44:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:06,553 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2020-09-24 22:44:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 22:44:06,554 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-09-24 22:44:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:06,557 INFO L225 Difference]: With dead ends: 118 [2020-09-24 22:44:06,557 INFO L226 Difference]: Without dead ends: 101 [2020-09-24 22:44:06,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=188, Invalid=1618, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 22:44:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-24 22:44:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2020-09-24 22:44:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-24 22:44:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-09-24 22:44:06,581 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 71 [2020-09-24 22:44:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:06,581 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-09-24 22:44:06,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 22:44:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-09-24 22:44:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 22:44:06,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:06,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:44:06,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:44:06,584 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:06,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1660138148, now seen corresponding path program 1 times [2020-09-24 22:44:06,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:06,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151335503] [2020-09-24 22:44:06,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:09,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:09,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 22:44:09,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:44:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2699 [2020-09-24 22:44:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:44:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 22:44:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:44:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:09,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:09,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:09,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:09,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 22:44:09,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:44:09,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:09,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:44:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:09,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:44:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:44:09,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:09,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:09,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:09,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:09,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:44:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:09,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:09,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:09,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:44:09,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:09,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:44:09,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:09,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:09,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 22:44:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:09,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:09,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:09,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:44:09,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:09,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:44:09,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:09,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:09,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:44:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:09,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:09,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:09,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:44:09,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:09,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:44:09,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:09,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:09,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 22:44:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:09,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:09,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:44:09,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:44:09,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:09,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:09,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 22:44:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:09,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:09,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:09,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:44:09,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:44:09,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:09,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 22:44:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:09,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:09,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:09,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:44:09,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:09,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:44:09,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:44:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:44:09,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 22:44:09,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151335503] [2020-09-24 22:44:09,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:44:09,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:44:09,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630058709] [2020-09-24 22:44:09,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:44:09,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:09,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:44:09,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:44:09,668 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 10 states. [2020-09-24 22:44:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:10,176 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-09-24 22:44:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:44:10,176 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-24 22:44:10,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:10,180 INFO L225 Difference]: With dead ends: 104 [2020-09-24 22:44:10,180 INFO L226 Difference]: Without dead ends: 98 [2020-09-24 22:44:10,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:44:10,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-24 22:44:10,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-09-24 22:44:10,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-24 22:44:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2020-09-24 22:44:10,204 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 85 [2020-09-24 22:44:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:10,206 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2020-09-24 22:44:10,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:44:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2020-09-24 22:44:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 22:44:10,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:10,212 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:44:10,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:44:10,212 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:10,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2046230471, now seen corresponding path program 1 times [2020-09-24 22:44:10,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:10,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401590632] [2020-09-24 22:44:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:10,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:15,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:15,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 22:44:15,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:44:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:44:15,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:44:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 22:44:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:44:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:15,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:15,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 22:44:15,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:15,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:44:15,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:15,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:15,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:15,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:44:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:15,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:15,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:15,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:44:15,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:44:15,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:15,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:44:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:15,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:15,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:44:15,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:15,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:44:15,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:15,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 22:44:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:15,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:15,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:44:15,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:44:15,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:15,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:15,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:44:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:15,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:15,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:44:15,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:15,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:44:15,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:15,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:15,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:15,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:15,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:15,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 22:44:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:15,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:15,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:44:15,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:44:15,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:44:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 22:44:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:15,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:15,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:44:15,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:44:15,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:44:15,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:15,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 22:44:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:15,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:15,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:15,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:44:15,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:44:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:15,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:44:15,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 22:44:15,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401590632] [2020-09-24 22:44:15,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:44:15,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:44:15,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012334225] [2020-09-24 22:44:15,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:44:15,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:15,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:44:15,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:44:15,677 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 10 states. [2020-09-24 22:44:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:16,526 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2020-09-24 22:44:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:44:16,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-09-24 22:44:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:16,528 INFO L225 Difference]: With dead ends: 124 [2020-09-24 22:44:16,529 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 22:44:16,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:44:16,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 22:44:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2020-09-24 22:44:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 22:44:16,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2020-09-24 22:44:16,556 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 86 [2020-09-24 22:44:16,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:16,557 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2020-09-24 22:44:16,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:44:16,557 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2020-09-24 22:44:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 22:44:16,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:16,566 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1] [2020-09-24 22:44:16,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:44:16,568 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:16,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:16,568 INFO L82 PathProgramCache]: Analyzing trace with hash -416868516, now seen corresponding path program 1 times [2020-09-24 22:44:16,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:16,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577043349] [2020-09-24 22:44:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:44:16,607 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:44:16,607 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:44:16,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:44:16,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:44:16 BoogieIcfgContainer [2020-09-24 22:44:16,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:44:16,660 INFO L168 Benchmark]: Toolchain (without parser) took 30142.91 ms. Allocated memory was 141.0 MB in the beginning and 433.1 MB in the end (delta: 292.0 MB). Free memory was 102.9 MB in the beginning and 175.2 MB in the end (delta: -72.3 MB). Peak memory consumption was 219.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:44:16,661 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:44:16,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.33 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 169.1 MB in the end (delta: -66.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:44:16,663 INFO L168 Benchmark]: Boogie Preprocessor took 80.13 ms. Allocated memory is still 204.5 MB. Free memory was 169.1 MB in the beginning and 166.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:44:16,664 INFO L168 Benchmark]: RCFGBuilder took 744.16 ms. Allocated memory is still 204.5 MB. Free memory was 166.5 MB in the beginning and 119.2 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:44:16,667 INFO L168 Benchmark]: TraceAbstraction took 28593.97 ms. Allocated memory was 204.5 MB in the beginning and 433.1 MB in the end (delta: 228.6 MB). Free memory was 119.2 MB in the beginning and 175.2 MB in the end (delta: -56.0 MB). Peak memory consumption was 172.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:44:16,680 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.33 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 169.1 MB in the end (delta: -66.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.13 ms. Allocated memory is still 204.5 MB. Free memory was 169.1 MB in the beginning and 166.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 744.16 ms. Allocated memory is still 204.5 MB. Free memory was 166.5 MB in the beginning and 119.2 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28593.97 ms. Allocated memory was 204.5 MB in the beginning and 433.1 MB in the end (delta: 228.6 MB). Free memory was 119.2 MB in the beginning and 175.2 MB in the end (delta: -56.0 MB). Peak memory consumption was 172.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; [L903] struct list_head *dev1, *dev2; [L904] CALL, EXPR my_malloc(sizeof(*dev1)) [L879] CALL, EXPR __getMemory(size) [L871] (size > 0) ? (0) : __blast_assert () [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; [L879] RET, EXPR __getMemory(size) [L879] return __getMemory(size); [L904] RET, EXPR my_malloc(sizeof(*dev1)) [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) [L879] CALL, EXPR __getMemory(size) [L871] (size > 0) ? (0) : __blast_assert () [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; [L879] RET, EXPR __getMemory(size) [L879] return __getMemory(size); [L905] RET, EXPR my_malloc(sizeof(*dev2)) [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L907] CALL list_add(dev2, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND FALSE !(__VERIFIER_nondet_int()) [L907] RET list_add(dev2, &head) [L908] CALL list_add(dev1, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new [L908] RET list_add(dev1, &head) [L909] CALL list_del(dev2) [L896] COND FALSE !(entry==elem) [L909] RET list_del(dev2) [L910] CALL list_add(dev2, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND FALSE !(__VERIFIER_nondet_int()) [L910] RET list_add(dev2, &head) [L913] CALL list_add(dev1, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L890] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.4s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 494 SDtfs, 706 SDslu, 1330 SDs, 0 SdLazy, 2901 SolverSat, 275 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 51 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 610 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 127493 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 127/149 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...