/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 --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 interpolation-heuristic=FIRST --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-eb0fd7c [2020-09-21 11:23:30,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:23:30,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:23:30,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:23:30,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:23:30,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:23:30,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:23:30,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:23:30,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:23:30,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:23:30,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:23:30,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:23:30,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:23:30,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:23:30,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:23:30,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:23:30,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:23:30,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:23:30,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:23:30,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:23:30,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:23:30,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:23:30,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:23:30,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:23:30,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:23:30,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:23:30,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:23:30,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:23:30,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:23:30,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:23:30,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:23:30,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:23:30,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:23:30,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:23:30,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:23:30,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:23:30,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:23:30,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:23:30,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:23:30,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:23:30,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:23:30,548 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 [2020-09-21 11:23:30,594 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:23:30,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:23:30,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:23:30,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:23:30,597 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:23:30,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:23:30,598 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:23:30,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:23:30,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:23:30,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:23:30,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:23:30,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:23:30,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:23:30,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:23:30,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:23:30,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:23:30,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:23:30,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:23:30,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:23:30,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:23:30,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:23:30,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:23:30,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:23:30,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:23:30,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:23:30,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:23:30,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:23:30,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:23:30,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:23:30,604 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:23:31,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:23:31,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:23:31,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:23:31,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:23:31,133 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:23:31,134 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-21 11:23:31,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e9189d33/62f53e8d65b64867988ea6243d783556/FLAG30eb4679a [2020-09-21 11:23:31,882 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:23:31,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-21 11:23:31,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e9189d33/62f53e8d65b64867988ea6243d783556/FLAG30eb4679a [2020-09-21 11:23:32,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e9189d33/62f53e8d65b64867988ea6243d783556 [2020-09-21 11:23:32,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:23:32,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:23:32,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:23:32,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:23:32,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:23:32,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:23:32" (1/1) ... [2020-09-21 11:23:32,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d78f5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32, skipping insertion in model container [2020-09-21 11:23:32,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:23:32" (1/1) ... [2020-09-21 11:23:32,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:23:32,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:23:32,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:23:32,793 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:23:32,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:23:32,976 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:23:32,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32 WrapperNode [2020-09-21 11:23:32,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:23:32,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:23:32,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:23:32,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:23:32,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32" (1/1) ... [2020-09-21 11:23:33,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32" (1/1) ... [2020-09-21 11:23:33,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32" (1/1) ... [2020-09-21 11:23:33,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32" (1/1) ... [2020-09-21 11:23:33,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32" (1/1) ... [2020-09-21 11:23:33,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32" (1/1) ... [2020-09-21 11:23:33,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32" (1/1) ... [2020-09-21 11:23:33,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:23:33,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:23:33,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:23:33,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:23:33,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32" (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 [2020-09-21 11:23:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:23:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:23:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-21 11:23:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-09-21 11:23:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-09-21 11:23:33,216 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-21 11:23:33,216 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-09-21 11:23:33,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:23:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:23:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-21 11:23:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-21 11:23:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-21 11:23:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-21 11:23:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-21 11:23:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-21 11:23:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-21 11:23:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-21 11:23:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-21 11:23:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-21 11:23:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-21 11:23:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-21 11:23:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-21 11:23:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-21 11:23:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-21 11:23:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-21 11:23:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-21 11:23:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-21 11:23:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-21 11:23:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-21 11:23:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-21 11:23:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-21 11:23:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-21 11:23:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-21 11:23:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-21 11:23:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-21 11:23:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-21 11:23:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-21 11:23:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-21 11:23:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-21 11:23:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-21 11:23:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-21 11:23:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-21 11:23:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-21 11:23:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-21 11:23:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-21 11:23:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-21 11:23:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-21 11:23:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-21 11:23:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:23:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-21 11:23:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-21 11:23:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-21 11:23:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-21 11:23:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-21 11:23:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-21 11:23:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-21 11:23:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-21 11:23:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-21 11:23:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-21 11:23:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-21 11:23:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-21 11:23:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-21 11:23:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-21 11:23:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-21 11:23:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-21 11:23:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-21 11:23:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-21 11:23:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-21 11:23:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-21 11:23:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-21 11:23:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-21 11:23:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-21 11:23:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-21 11:23:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-21 11:23:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-21 11:23:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-21 11:23:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-21 11:23:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-21 11:23:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-21 11:23:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-21 11:23:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-21 11:23:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-21 11:23:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-21 11:23:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-21 11:23:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-21 11:23:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-21 11:23:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-21 11:23:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-21 11:23:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-21 11:23:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-21 11:23:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-21 11:23:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-21 11:23:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-21 11:23:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-21 11:23:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-21 11:23:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-21 11:23:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-21 11:23:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-21 11:23:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-21 11:23:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-21 11:23:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-21 11:23:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-21 11:23:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-21 11:23:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-21 11:23:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-21 11:23:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-21 11:23:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-21 11:23:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-21 11:23:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-21 11:23:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-21 11:23:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-21 11:23:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:23:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:23:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 11:23:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:23:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 11:23:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-09-21 11:23:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 11:23:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-09-21 11:23:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-09-21 11:23:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-09-21 11:23:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-09-21 11:23:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-09-21 11:23:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-09-21 11:23:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-09-21 11:23:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-09-21 11:23:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-09-21 11:23:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-09-21 11:23:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-09-21 11:23:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:23:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-09-21 11:23:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-09-21 11:23:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-21 11:23:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-09-21 11:23:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:23:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:23:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:23:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 11:23:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:23:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:23:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:23:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:23:33,783 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:23:33,783 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:23:33,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:33 BoogieIcfgContainer [2020-09-21 11:23:33,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:23:33,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:23:33,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:23:33,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:23:33,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:23:32" (1/3) ... [2020-09-21 11:23:33,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3085793a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:33, skipping insertion in model container [2020-09-21 11:23:33,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:32" (2/3) ... [2020-09-21 11:23:33,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3085793a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:33, skipping insertion in model container [2020-09-21 11:23:33,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:33" (3/3) ... [2020-09-21 11:23:33,798 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-09-21 11:23:33,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:23:33,820 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:23:33,843 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:23:33,874 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:23:33,874 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:23:33,874 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:23:33,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:23:33,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:23:33,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:23:33,875 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:23:33,875 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:23:33,900 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-09-21 11:23:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:23:33,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:33,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:33,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:33,920 INFO L82 PathProgramCache]: Analyzing trace with hash -573637036, now seen corresponding path program 1 times [2020-09-21 11:23:33,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:33,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54418114] [2020-09-21 11:23:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:34,125 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:34,125 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:34,126 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:34,126 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:34,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:23:34,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:23:34,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:34,292 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:34,292 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:34,292 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:34,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:34,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:34,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:34,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:34,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54418114] [2020-09-21 11:23:34,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:34,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:23:34,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931172386] [2020-09-21 11:23:34,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:23:34,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:34,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:23:34,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:23:34,349 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 7 states. [2020-09-21 11:23:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:34,937 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2020-09-21 11:23:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:23:34,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-09-21 11:23:34,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:34,955 INFO L225 Difference]: With dead ends: 90 [2020-09-21 11:23:34,955 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 11:23:34,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:23:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 11:23:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 11:23:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:23:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-21 11:23:35,028 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2020-09-21 11:23:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:35,029 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-21 11:23:35,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:23:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-21 11:23:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 11:23:35,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:35,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:35,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:23:35,033 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:35,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1917870949, now seen corresponding path program 1 times [2020-09-21 11:23:35,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:35,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480722180] [2020-09-21 11:23:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:35,116 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:35,117 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:35,117 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:35,117 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:35,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 11:23:35,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:35,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:23:35,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:23:35,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-21 11:23:35,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:35,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:35,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:35,215 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:35,215 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:35,215 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:35,216 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:35,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:35,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:35,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:35,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:35,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:23:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:35,240 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:35,241 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:35,241 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:35,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:35,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:35,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:35,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:35,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:35,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:35,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:35,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:35,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:35,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:35,253 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:35,254 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:35,254 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:35,254 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:35,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:35,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:35,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:35,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:35,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:35,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:35,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:35,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:23:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:35,292 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:35,292 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:35,292 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:35,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:35,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:35,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:23:35,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:23:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:35,389 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:35,390 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:35,390 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:35,390 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:35,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:35,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:35,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:23:35,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:23:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 11:23:35,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480722180] [2020-09-21 11:23:35,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:35,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:23:35,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894431840] [2020-09-21 11:23:35,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:23:35,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:35,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:23:35,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:23:35,447 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 9 states. [2020-09-21 11:23:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:35,760 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2020-09-21 11:23:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:23:35,762 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-21 11:23:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:35,764 INFO L225 Difference]: With dead ends: 69 [2020-09-21 11:23:35,765 INFO L226 Difference]: Without dead ends: 49 [2020-09-21 11:23:35,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:23:35,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-21 11:23:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-09-21 11:23:35,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 11:23:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-09-21 11:23:35,792 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 38 [2020-09-21 11:23:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:35,793 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-09-21 11:23:35,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:23:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-09-21 11:23:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 11:23:35,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:35,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:35,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:23:35,796 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:35,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:35,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1624467942, now seen corresponding path program 1 times [2020-09-21 11:23:35,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:35,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506448073] [2020-09-21 11:23:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:35,900 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:35,900 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:35,901 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:35,901 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:35,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 11:23:35,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:23:35,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:23:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:23:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:23:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:35,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:35,972 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:35,973 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:35,973 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:35,973 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:35,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:35,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:35,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:35,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:35,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:23:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:36,009 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:36,010 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:36,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:36,010 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:36,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:36,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:23:36,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:23:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:36,082 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:36,082 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:36,082 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:36,083 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:36,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:36,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:36,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:23:36,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:23:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:36,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:36,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:23:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:36,124 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:36,125 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:36,125 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:36,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:36,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:36,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:36,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:36,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:23:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:36,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:36,136 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:36,136 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:36,136 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:36,136 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:36,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:36,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:36,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:36,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:36,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 11:23:36,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506448073] [2020-09-21 11:23:36,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:23:36,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:23:36,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779676107] [2020-09-21 11:23:36,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:23:36,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:36,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:23:36,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:23:36,148 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 9 states. [2020-09-21 11:23:36,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:36,341 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2020-09-21 11:23:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:23:36,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-21 11:23:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:36,343 INFO L225 Difference]: With dead ends: 71 [2020-09-21 11:23:36,343 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 11:23:36,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:23:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 11:23:36,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 11:23:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:23:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-09-21 11:23:36,353 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 38 [2020-09-21 11:23:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:36,353 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-09-21 11:23:36,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:23:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-09-21 11:23:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 11:23:36,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:36,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:36,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:23:36,355 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:36,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:36,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1655487749, now seen corresponding path program 1 times [2020-09-21 11:23:36,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:36,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430702826] [2020-09-21 11:23:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:36,595 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:36,595 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:36,595 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:36,595 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:36,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 11:23:36,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-21 11:23:36,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 11:23:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:23:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 11:23:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:36,727 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:36,727 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:36,727 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:36,728 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:36,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:36,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:36,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:23:36,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:23:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:23:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:36,794 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:36,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:36,794 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:36,795 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:36,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:36,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:36,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 11:23:36,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:23:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:23:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:36,859 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:36,860 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:36,860 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:36,860 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:36,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:36,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:23:36,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:23:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:36,916 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:36,917 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:36,917 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:36,917 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:36,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:36,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:36,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:23:36,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:23:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:23:36,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:37,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:37,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:37,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:37,037 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:37,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:37,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:37,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:37,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:23:37,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:23:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:37,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 11:23:37,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430702826] [2020-09-21 11:23:37,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:23:37,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 11:23:37,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414574033] [2020-09-21 11:23:37,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 11:23:37,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:37,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 11:23:37,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:23:37,076 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 15 states. [2020-09-21 11:23:38,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:38,055 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2020-09-21 11:23:38,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 11:23:38,056 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-09-21 11:23:38,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:38,058 INFO L225 Difference]: With dead ends: 77 [2020-09-21 11:23:38,058 INFO L226 Difference]: Without dead ends: 74 [2020-09-21 11:23:38,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-21 11:23:38,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-21 11:23:38,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2020-09-21 11:23:38,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-21 11:23:38,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-09-21 11:23:38,074 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 38 [2020-09-21 11:23:38,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:38,074 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-09-21 11:23:38,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 11:23:38,074 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-09-21 11:23:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 11:23:38,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:38,076 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 11:23:38,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:23:38,076 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1321471087, now seen corresponding path program 1 times [2020-09-21 11:23:38,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:38,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415182208] [2020-09-21 11:23:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:38,195 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:38,195 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:38,196 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:38,196 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:38,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 11:23:38,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:38,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-21 11:23:38,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 11:23:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:23:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 11:23:38,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:38,292 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:38,292 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:38,292 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:38,292 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:38,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:38,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:38,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:38,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:38,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:23:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:38,325 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:38,326 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:38,326 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:38,326 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:38,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:38,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:38,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:23:38,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:38,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:38,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:38,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:23:38,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:38,371 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:38,372 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:38,372 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:38,372 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:38,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:38,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:38,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:38,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:23:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:38,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:23:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:38,427 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:38,428 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:38,428 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:38,429 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:38,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:38,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:38,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 11:23:38,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:23:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:38,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:23:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:38,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:38,508 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:38,508 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:38,509 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:38,509 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:38,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:38,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:38,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:23:38,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:23:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:38,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:23:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:38,587 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:38,588 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:38,588 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:38,588 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:38,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:38,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:38,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:23:38,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:23:38,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:23:38,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415182208] [2020-09-21 11:23:38,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:23:38,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-21 11:23:38,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338837165] [2020-09-21 11:23:38,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-21 11:23:38,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:38,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-21 11:23:38,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-09-21 11:23:38,640 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 22 states. [2020-09-21 11:23:39,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:39,977 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2020-09-21 11:23:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 11:23:39,977 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-09-21 11:23:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:39,980 INFO L225 Difference]: With dead ends: 80 [2020-09-21 11:23:39,981 INFO L226 Difference]: Without dead ends: 76 [2020-09-21 11:23:39,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 11:23:39,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-21 11:23:39,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-09-21 11:23:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-21 11:23:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2020-09-21 11:23:39,997 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 45 [2020-09-21 11:23:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:39,998 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2020-09-21 11:23:39,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-21 11:23:39,998 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2020-09-21 11:23:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 11:23:39,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:40,000 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 11:23:40,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:23:40,000 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:40,000 INFO L82 PathProgramCache]: Analyzing trace with hash 512124461, now seen corresponding path program 1 times [2020-09-21 11:23:40,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:40,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092057692] [2020-09-21 11:23:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:40,127 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:40,128 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:40,128 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:40,128 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:40,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 11:23:40,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-21 11:23:40,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 11:23:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:23:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 11:23:40,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:40,227 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:40,227 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:40,228 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:40,228 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:40,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:40,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:40,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:23:40,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:23:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:40,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:23:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:40,286 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:40,286 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:40,287 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:40,287 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:40,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:40,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:40,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:23:40,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:23:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:23:40,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:40,348 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:40,348 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:40,348 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:40,348 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:40,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:40,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:23:40,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:23:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:40,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:40,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:23:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:40,393 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:40,393 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:40,394 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:40,394 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:40,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:40,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:40,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:23:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:40,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:40,405 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:40,405 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:40,406 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:40,406 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:40,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:40,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:40,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:40,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:23:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:40,439 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:40,439 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:40,440 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:40,440 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:40,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:40,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:40,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:40,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:23:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:23:40,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092057692] [2020-09-21 11:23:40,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:23:40,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 11:23:40,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628631815] [2020-09-21 11:23:40,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 11:23:40,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:40,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 11:23:40,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-09-21 11:23:40,470 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand 16 states. [2020-09-21 11:23:41,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:41,129 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-21 11:23:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 11:23:41,129 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-09-21 11:23:41,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:41,131 INFO L225 Difference]: With dead ends: 90 [2020-09-21 11:23:41,131 INFO L226 Difference]: Without dead ends: 79 [2020-09-21 11:23:41,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2020-09-21 11:23:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-21 11:23:41,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2020-09-21 11:23:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-21 11:23:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2020-09-21 11:23:41,163 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 45 [2020-09-21 11:23:41,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:41,166 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2020-09-21 11:23:41,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 11:23:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2020-09-21 11:23:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:23:41,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:41,168 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:41,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:23:41,169 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:41,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1069126843, now seen corresponding path program 1 times [2020-09-21 11:23:41,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:41,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118591545] [2020-09-21 11:23:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:41,330 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:41,331 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:41,331 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:41,331 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:41,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 11:23:41,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:41,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-21 11:23:41,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 11:23:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:23:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 11:23:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:41,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:41,465 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:41,465 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:41,465 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:41,466 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:41,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:41,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:41,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:41,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:41,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:23:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:41,502 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:41,502 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:41,502 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:41,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:41,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:41,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:41,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:23:41,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:41,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:41,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:23:41,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:41,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:41,552 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:41,553 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:41,553 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:41,554 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:41,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:41,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:41,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:23:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:41,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:23:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:41,612 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:41,612 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:41,612 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:41,613 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:41,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:41,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:23:41,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:41,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:23:41,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:41,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:23:41,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:41,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:41,710 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:41,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:41,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:41,711 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:41,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:41,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:23:41,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:23:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:41,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:23:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:41,817 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:41,817 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:41,817 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:41,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:41,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:41,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:41,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:41,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:41,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:41,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:23:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:41,835 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:41,836 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:41,836 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:41,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:41,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:41,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:41,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:23:41,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:23:41,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:41,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:23:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:41,895 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:41,896 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:41,896 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:41,896 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:41,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:23:41,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:41,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:41,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:23:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:23:41,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 11:23:41,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118591545] [2020-09-21 11:23:41,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:23:41,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-21 11:23:41,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886753938] [2020-09-21 11:23:41,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-21 11:23:41,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:41,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-21 11:23:41,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-09-21 11:23:41,937 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand 23 states. [2020-09-21 11:23:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:43,032 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2020-09-21 11:23:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 11:23:43,033 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-09-21 11:23:43,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:43,034 INFO L225 Difference]: With dead ends: 85 [2020-09-21 11:23:43,034 INFO L226 Difference]: Without dead ends: 82 [2020-09-21 11:23:43,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2020-09-21 11:23:43,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-21 11:23:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-09-21 11:23:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-21 11:23:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-09-21 11:23:43,049 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 57 [2020-09-21 11:23:43,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:43,049 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-09-21 11:23:43,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-21 11:23:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-09-21 11:23:43,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:23:43,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:43,051 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:43,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:23:43,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:43,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:43,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1878473469, now seen corresponding path program 1 times [2020-09-21 11:23:43,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:43,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929370995] [2020-09-21 11:23:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:43,160 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:43,161 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:43,161 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:43,161 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:43,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 11:23:43,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:43,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-21 11:23:43,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 11:23:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:23:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-21 11:23:43,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:43,237 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:43,237 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:43,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:43,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:43,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:43,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:43,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:43,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:23:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:43,263 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:43,263 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:43,264 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:43,264 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:43,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:43,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:23:43,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:23:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:43,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:43,296 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:43,296 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:43,296 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:43,297 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:43,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:43,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:43,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:43,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:23:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:43,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:43,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:23:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:43,335 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:43,335 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:43,335 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:43,336 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:43,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:43,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:23:43,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:23:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:23:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:43,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:43,424 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:43,424 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:43,424 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:43,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:43,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:43,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:23:43,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:23:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:43,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:23:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:43,484 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:43,484 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:43,484 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:43,485 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:43,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:43,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:43,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:43,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:43,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:23:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:43,497 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:43,498 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:43,498 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:43,498 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:43,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:43,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:23:43,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:23:43,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:43,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:23:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:43,550 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:43,550 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:43,551 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:43,551 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:43,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:23:43,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:43,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:23:43,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:43,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:23:43,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:43,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:23:43,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 11:23:43,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929370995] [2020-09-21 11:23:43,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:23:43,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-21 11:23:43,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022275524] [2020-09-21 11:23:43,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-21 11:23:43,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:43,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-21 11:23:43,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-09-21 11:23:43,604 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 22 states. [2020-09-21 11:23:44,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:44,647 INFO L93 Difference]: Finished difference Result 95 states and 107 transitions. [2020-09-21 11:23:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 11:23:44,649 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2020-09-21 11:23:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:44,651 INFO L225 Difference]: With dead ends: 95 [2020-09-21 11:23:44,651 INFO L226 Difference]: Without dead ends: 82 [2020-09-21 11:23:44,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 11:23:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-21 11:23:44,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-09-21 11:23:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-21 11:23:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-09-21 11:23:44,665 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 57 [2020-09-21 11:23:44,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:44,666 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-09-21 11:23:44,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-21 11:23:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-09-21 11:23:44,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:23:44,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:44,667 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:44,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:23:44,668 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:44,668 INFO L82 PathProgramCache]: Analyzing trace with hash 482320829, now seen corresponding path program 1 times [2020-09-21 11:23:44,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:44,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106097453] [2020-09-21 11:23:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:44,707 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:44,708 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:44,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:44,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 11:23:44,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:23:44,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:23:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-21 11:23:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 11:23:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:44,792 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:44,792 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:44,793 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:44,793 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:44,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:44,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:44,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:44,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:44,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:44,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:23:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:44,811 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:44,811 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:44,811 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:44,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:44,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:44,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:44,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:44,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:44,819 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:44,820 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:44,820 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:44,820 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:44,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:44,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:44,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:44,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:44,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:23:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:44,827 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:44,827 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:44,827 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:44,828 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:44,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:44,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:44,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:44,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:44,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:44,834 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:44,835 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:44,835 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:44,835 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:44,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:44,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:44,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:44,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:44,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:23:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:44,861 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:44,861 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:44,861 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:44,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:44,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:44,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:23:44,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:23:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:23:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:44,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:23:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:44,902 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:44,903 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:44,903 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:44,903 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:44,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:44,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:23:44,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:23:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:23:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:44,932 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:44,933 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:44,933 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:44,933 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:44,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:23:44,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:23:44,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:23:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:23:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 11:23:44,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106097453] [2020-09-21 11:23:44,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:23:44,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:23:44,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129958139] [2020-09-21 11:23:44,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:23:44,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:44,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:23:44,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:23:44,995 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 10 states. [2020-09-21 11:23:45,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:45,480 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-09-21 11:23:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:23:45,480 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-09-21 11:23:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:45,482 INFO L225 Difference]: With dead ends: 92 [2020-09-21 11:23:45,482 INFO L226 Difference]: Without dead ends: 80 [2020-09-21 11:23:45,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:23:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-21 11:23:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-21 11:23:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-21 11:23:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-09-21 11:23:45,495 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 57 [2020-09-21 11:23:45,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:45,495 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-09-21 11:23:45,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:23:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-09-21 11:23:45,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:23:45,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:45,497 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:45,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:23:45,498 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:45,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:45,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1291667455, now seen corresponding path program 1 times [2020-09-21 11:23:45,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:45,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315426775] [2020-09-21 11:23:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:45,673 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:45,673 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:45,674 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:45,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:45,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 11:23:45,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-21 11:23:45,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 11:23:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:23:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-21 11:23:45,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:45,787 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:45,787 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:45,787 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:45,787 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:45,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:45,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:45,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:23:45,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:45,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:45,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:23:45,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:45,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:23:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:45,820 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:45,821 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:45,821 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:45,821 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:45,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:45,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:45,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:23:45,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:23:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:45,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:23:45,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:45,862 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:45,862 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:45,863 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:45,863 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:45,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:45,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:45,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:23:45,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:23:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:45,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:23:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:45,893 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:45,894 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:45,894 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:45,894 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:45,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:23:45,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:23:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:23:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:23:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:23:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:45,944 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:45,944 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:45,944 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:45,945 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:45,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:23:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:23:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:23:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:45,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:23:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:45,997 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:45,997 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:45,997 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:45,997 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:45,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:45,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:45,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:45,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:45,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:45,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:45,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:45,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:46,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:23:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:46,005 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:46,006 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:46,006 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:46,006 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:46,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:23:46,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:46,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:46,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:23:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:46,020 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:46,021 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:46,021 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:46,021 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:46,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:23:46,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:46,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:46,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:23:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:46,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 11:23:46,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315426775] [2020-09-21 11:23:46,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:23:46,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 11:23:46,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610029551] [2020-09-21 11:23:46,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 11:23:46,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:46,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 11:23:46,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:23:46,055 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 18 states. [2020-09-21 11:23:47,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:47,100 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2020-09-21 11:23:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 11:23:47,101 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-09-21 11:23:47,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:47,102 INFO L225 Difference]: With dead ends: 104 [2020-09-21 11:23:47,102 INFO L226 Difference]: Without dead ends: 93 [2020-09-21 11:23:47,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2020-09-21 11:23:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-21 11:23:47,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 72. [2020-09-21 11:23:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-21 11:23:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2020-09-21 11:23:47,128 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 57 [2020-09-21 11:23:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:47,129 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2020-09-21 11:23:47,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 11:23:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2020-09-21 11:23:47,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-21 11:23:47,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:47,135 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:47,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:23:47,136 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:47,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:47,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1118751113, now seen corresponding path program 1 times [2020-09-21 11:23:47,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:47,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964985066] [2020-09-21 11:23:47,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:23:47,169 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:23:47,169 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:23:47,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:23:47,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:23:47 BoogieIcfgContainer [2020-09-21 11:23:47,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:23:47,210 INFO L168 Benchmark]: Toolchain (without parser) took 15046.97 ms. Allocated memory was 146.3 MB in the beginning and 391.1 MB in the end (delta: 244.8 MB). Free memory was 100.1 MB in the beginning and 267.2 MB in the end (delta: -167.1 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:47,211 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:23:47,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.79 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.5 MB in the beginning and 169.1 MB in the end (delta: -69.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:47,217 INFO L168 Benchmark]: Boogie Preprocessor took 125.03 ms. Allocated memory is still 203.9 MB. Free memory was 169.1 MB in the beginning and 165.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:47,217 INFO L168 Benchmark]: RCFGBuilder took 683.87 ms. Allocated memory is still 203.9 MB. Free memory was 165.7 MB in the beginning and 120.2 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:47,218 INFO L168 Benchmark]: TraceAbstraction took 13414.85 ms. Allocated memory was 203.9 MB in the beginning and 391.1 MB in the end (delta: 187.2 MB). Free memory was 119.5 MB in the beginning and 267.2 MB in the end (delta: -147.7 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:47,231 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 813.79 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.5 MB in the beginning and 169.1 MB in the end (delta: -69.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.03 ms. Allocated memory is still 203.9 MB. Free memory was 169.1 MB in the beginning and 165.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 683.87 ms. Allocated memory is still 203.9 MB. Free memory was 165.7 MB in the beginning and 120.2 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13414.85 ms. Allocated memory was 203.9 MB in the beginning and 391.1 MB in the end (delta: 187.2 MB). Free memory was 119.5 MB in the beginning and 267.2 MB in the end (delta: -147.7 MB). Peak memory consumption was 39.5 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 TRUE __VERIFIER_nondet_int() [L892] elem = new [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, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.3s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 387 SDtfs, 514 SDslu, 1160 SDs, 0 SdLazy, 5205 SolverSat, 484 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 335 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 509 NumberOfCodeBlocks, 509 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 85057 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 90/143 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...