/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 enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:35:44,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:35:44,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:35:44,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:35:44,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:35:44,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:35:44,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:35:44,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:35:44,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:35:44,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:35:44,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:35:44,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:35:44,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:35:44,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:35:44,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:35:44,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:35:44,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:35:44,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:35:44,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:35:44,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:35:44,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:35:44,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:35:44,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:35:44,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:35:44,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:35:44,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:35:44,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:35:44,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:35:44,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:35:44,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:35:44,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:35:44,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:35:44,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:35:44,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:35:44,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:35:44,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:35:44,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:35:44,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:35:44,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:35:44,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:35:44,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:35:44,314 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 12:35:44,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:35:44,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:35:44,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:35:44,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:35:44,360 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:35:44,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:35:44,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:35:44,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:35:44,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:35:44,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:35:44,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:35:44,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:35:44,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:35:44,363 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:35:44,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:35:44,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:35:44,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:35:44,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:35:44,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:35:44,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:35:44,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:35:44,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:35:44,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:35:44,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:35:44,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:35:44,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:35:44,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:35:44,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:35:44,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:35:44,367 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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:35:44,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:35:44,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:35:44,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:35:44,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:35:44,844 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:35:44,845 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-21 12:35:44,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bd9501b1/30826f17b3a24f1c8ad0f5b3d76b6f0f/FLAGa2bd928ba [2020-09-21 12:35:45,529 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:35:45,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-21 12:35:45,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bd9501b1/30826f17b3a24f1c8ad0f5b3d76b6f0f/FLAGa2bd928ba [2020-09-21 12:35:45,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bd9501b1/30826f17b3a24f1c8ad0f5b3d76b6f0f [2020-09-21 12:35:45,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:35:45,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:35:45,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:35:45,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:35:45,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:35:45,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:35:45" (1/1) ... [2020-09-21 12:35:45,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd36ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:45, skipping insertion in model container [2020-09-21 12:35:45,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:35:45" (1/1) ... [2020-09-21 12:35:45,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:35:45,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:35:46,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:35:46,166 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:35:46,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:35:46,326 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:35:46,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:46 WrapperNode [2020-09-21 12:35:46,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:35:46,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:35:46,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:35:46,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:35:46,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:46" (1/1) ... [2020-09-21 12:35:46,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:46" (1/1) ... [2020-09-21 12:35:46,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:46" (1/1) ... [2020-09-21 12:35:46,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:46" (1/1) ... [2020-09-21 12:35:46,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:46" (1/1) ... [2020-09-21 12:35:46,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:46" (1/1) ... [2020-09-21 12:35:46,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:46" (1/1) ... [2020-09-21 12:35:46,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:35:46,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:35:46,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:35:46,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:35:46,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:46" (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 12:35:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:35:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:35:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:35:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-21 12:35:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-21 12:35:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:35:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:35:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:35:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-21 12:35:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-21 12:35:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-21 12:35:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-21 12:35:46,470 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-21 12:35:46,470 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-21 12:35:46,470 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-21 12:35:46,470 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-21 12:35:46,470 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-21 12:35:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-21 12:35:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-21 12:35:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-21 12:35:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-21 12:35:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-21 12:35:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-21 12:35:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-21 12:35:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-21 12:35:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-21 12:35:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-21 12:35:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-21 12:35:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-21 12:35:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-21 12:35:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-21 12:35:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-21 12:35:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-21 12:35:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-21 12:35:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:35:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:35:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:35:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:35:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:35:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:35:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:35:46,921 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:35:46,921 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-21 12:35:46,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:35:46 BoogieIcfgContainer [2020-09-21 12:35:46,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:35:46,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:35:46,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:35:46,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:35:46,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:35:45" (1/3) ... [2020-09-21 12:35:46,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abcc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:35:46, skipping insertion in model container [2020-09-21 12:35:46,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:46" (2/3) ... [2020-09-21 12:35:46,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abcc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:35:46, skipping insertion in model container [2020-09-21 12:35:46,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:35:46" (3/3) ... [2020-09-21 12:35:46,937 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-21 12:35:46,950 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:35:46,961 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:35:46,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:35:47,019 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:35:47,020 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:35:47,020 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:35:47,020 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:35:47,020 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:35:47,020 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:35:47,020 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:35:47,021 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:35:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-21 12:35:47,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 12:35:47,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:47,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:47,055 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:47,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:47,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-09-21 12:35:47,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:47,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556134418] [2020-09-21 12:35:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:47,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:48,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:48,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:35:48,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:35:48,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-21 12:35:48,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 12:35:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:48,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:35:48,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:48,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:48,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:48,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:48,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:35:48,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:48,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:48,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:35:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:48,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:48,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:48,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:48,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:35:48,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:35:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:48,388 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 12:35:48,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556134418] [2020-09-21 12:35:48,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:48,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:35:48,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173133950] [2020-09-21 12:35:48,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:35:48,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:48,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:35:48,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:35:48,423 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-09-21 12:35:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:48,608 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-09-21 12:35:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:35:48,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-21 12:35:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:48,626 INFO L225 Difference]: With dead ends: 93 [2020-09-21 12:35:48,627 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 12:35:48,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:35:48,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 12:35:48,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-21 12:35:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 12:35:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-09-21 12:35:48,678 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-09-21 12:35:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:48,679 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-09-21 12:35:48,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:35:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-09-21 12:35:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:35:48,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:48,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:48,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:35:48,682 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:48,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:48,682 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-09-21 12:35:48,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:48,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841852221] [2020-09-21 12:35:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:48,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:49,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:49,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:49,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:35:49,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:35:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:35:49,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:35:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:35:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:49,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:49,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:49,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:49,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:49,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:35:49,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:49,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:49,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:49,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:49,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-21 12:35:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:49,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:49,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:49,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:35:49,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:35:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:49,804 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 12:35:49,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841852221] [2020-09-21 12:35:49,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:49,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:35:49,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534503460] [2020-09-21 12:35:49,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:35:49,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:49,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:35:49,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:35:49,811 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2020-09-21 12:35:49,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:49,958 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-09-21 12:35:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:35:49,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-21 12:35:49,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:49,960 INFO L225 Difference]: With dead ends: 78 [2020-09-21 12:35:49,960 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 12:35:49,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:35:49,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 12:35:49,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-21 12:35:49,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 12:35:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-09-21 12:35:49,971 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-09-21 12:35:49,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:49,972 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-09-21 12:35:49,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:35:49,972 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-09-21 12:35:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:35:49,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:49,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:49,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:35:49,974 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:49,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:49,974 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-09-21 12:35:49,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:49,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986014359] [2020-09-21 12:35:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:50,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:50,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:51,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:51,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:35:51,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:35:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:35:51,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:35:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 12:35:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:35:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:51,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:51,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:51,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:51,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:35:51,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:51,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:51,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-21 12:35:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:51,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:51,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:51,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:51,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:35:51,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:35:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:51,078 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 12:35:51,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986014359] [2020-09-21 12:35:51,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:51,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:35:51,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523007910] [2020-09-21 12:35:51,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:35:51,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:35:51,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:35:51,081 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-09-21 12:35:51,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:51,298 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2020-09-21 12:35:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:35:51,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-21 12:35:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:51,303 INFO L225 Difference]: With dead ends: 106 [2020-09-21 12:35:51,303 INFO L226 Difference]: Without dead ends: 71 [2020-09-21 12:35:51,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:35:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-21 12:35:51,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2020-09-21 12:35:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-21 12:35:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-21 12:35:51,320 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 33 [2020-09-21 12:35:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:51,320 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-21 12:35:51,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:35:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-21 12:35:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:35:51,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:51,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:51,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:35:51,323 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:51,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1210151716, now seen corresponding path program 1 times [2020-09-21 12:35:51,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:51,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690476446] [2020-09-21 12:35:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:51,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:51,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:51,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:52,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:52,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:35:52,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:35:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:35:52,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:35:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:35:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:35:52,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:52,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:52,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:52,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:52,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:52,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:52,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:35:52,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:52,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:52,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-21 12:35:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:52,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:52,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:52,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:35:52,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:35:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:52,437 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 12:35:52,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690476446] [2020-09-21 12:35:52,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:52,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:35:52,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727837130] [2020-09-21 12:35:52,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:35:52,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:52,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:35:52,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:35:52,440 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-21 12:35:52,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:52,736 INFO L93 Difference]: Finished difference Result 160 states and 211 transitions. [2020-09-21 12:35:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:35:52,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-21 12:35:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:52,740 INFO L225 Difference]: With dead ends: 160 [2020-09-21 12:35:52,742 INFO L226 Difference]: Without dead ends: 108 [2020-09-21 12:35:52,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:35:52,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-21 12:35:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 74. [2020-09-21 12:35:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-21 12:35:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2020-09-21 12:35:52,769 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 95 transitions. Word has length 33 [2020-09-21 12:35:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:52,770 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 95 transitions. [2020-09-21 12:35:52,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:35:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 95 transitions. [2020-09-21 12:35:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:35:52,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:52,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:52,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:35:52,774 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:52,775 INFO L82 PathProgramCache]: Analyzing trace with hash -783992990, now seen corresponding path program 1 times [2020-09-21 12:35:52,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:52,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831616837] [2020-09-21 12:35:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:52,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:52,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:52,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:53,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:53,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:53,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:35:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:35:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:35:53,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:53,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:35:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:35:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:35:53,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:53,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:53,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:53,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:53,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:35:53,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:53,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-21 12:35:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:53,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:53,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:53,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:53,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:35:53,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:35:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:53,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:53,863 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 12:35:53,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831616837] [2020-09-21 12:35:53,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:53,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:35:53,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591451522] [2020-09-21 12:35:53,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:35:53,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:53,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:35:53,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:35:53,866 INFO L87 Difference]: Start difference. First operand 74 states and 95 transitions. Second operand 6 states. [2020-09-21 12:35:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:54,121 INFO L93 Difference]: Finished difference Result 200 states and 265 transitions. [2020-09-21 12:35:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:35:54,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-21 12:35:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:54,123 INFO L225 Difference]: With dead ends: 200 [2020-09-21 12:35:54,123 INFO L226 Difference]: Without dead ends: 90 [2020-09-21 12:35:54,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:35:54,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-21 12:35:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2020-09-21 12:35:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-21 12:35:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2020-09-21 12:35:54,134 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 33 [2020-09-21 12:35:54,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:54,134 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2020-09-21 12:35:54,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:35:54,134 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2020-09-21 12:35:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 12:35:54,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:54,137 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:54,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:35:54,137 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:54,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1568987085, now seen corresponding path program 1 times [2020-09-21 12:35:54,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:54,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097576369] [2020-09-21 12:35:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:54,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:54,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:54,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:55,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-21 12:35:55,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:35:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:35:55,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:35:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:35:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:35:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:55,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:55,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:55,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:35:55,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:55,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:55,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:55,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:55,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:55,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 12:35:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:55,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:35:55,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:35:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:35:55,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097576369] [2020-09-21 12:35:55,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:55,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:35:55,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849556207] [2020-09-21 12:35:55,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:35:55,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:55,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:35:55,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:35:55,300 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand 8 states. [2020-09-21 12:35:55,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:55,636 INFO L93 Difference]: Finished difference Result 116 states and 148 transitions. [2020-09-21 12:35:55,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:35:55,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-21 12:35:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:55,639 INFO L225 Difference]: With dead ends: 116 [2020-09-21 12:35:55,639 INFO L226 Difference]: Without dead ends: 114 [2020-09-21 12:35:55,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:35:55,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-21 12:35:55,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 105. [2020-09-21 12:35:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-21 12:35:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2020-09-21 12:35:55,650 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 134 transitions. Word has length 38 [2020-09-21 12:35:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:55,650 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 134 transitions. [2020-09-21 12:35:55,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:35:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 134 transitions. [2020-09-21 12:35:55,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:35:55,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:55,657 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:55,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:35:55,657 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:55,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:55,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1909797290, now seen corresponding path program 1 times [2020-09-21 12:35:55,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:55,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473081884] [2020-09-21 12:35:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:55,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:56,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:56,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 12:35:56,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:35:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:35:56,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:35:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 12:35:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:35:56,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:56,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:56,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:56,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:35:56,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:56,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:56,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 12:35:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:56,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:56,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:56,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:35:56,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:35:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:35:56,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473081884] [2020-09-21 12:35:56,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:56,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:35:56,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590511538] [2020-09-21 12:35:56,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:35:56,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:56,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:35:56,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:35:56,733 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. Second operand 5 states. [2020-09-21 12:35:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:56,844 INFO L93 Difference]: Finished difference Result 176 states and 224 transitions. [2020-09-21 12:35:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:35:56,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-09-21 12:35:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:56,847 INFO L225 Difference]: With dead ends: 176 [2020-09-21 12:35:56,848 INFO L226 Difference]: Without dead ends: 115 [2020-09-21 12:35:56,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:35:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-21 12:35:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-09-21 12:35:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-21 12:35:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 144 transitions. [2020-09-21 12:35:56,857 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 144 transitions. Word has length 40 [2020-09-21 12:35:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:56,858 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 144 transitions. [2020-09-21 12:35:56,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:35:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 144 transitions. [2020-09-21 12:35:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:35:56,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:56,860 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:56,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:35:56,860 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:56,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:56,860 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-09-21 12:35:56,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:56,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800011347] [2020-09-21 12:35:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:56,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:57,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:57,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:57,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 12:35:57,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:35:57,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:35:57,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:35:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:35:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:35:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:57,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:57,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:57,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:57,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:57,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:57,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:35:57,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:57,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 12:35:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:57,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:57,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:57,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:57,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:35:57,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:35:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:35:57,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800011347] [2020-09-21 12:35:57,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:57,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:35:57,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50933715] [2020-09-21 12:35:57,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:35:57,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:57,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:35:57,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:35:57,965 INFO L87 Difference]: Start difference. First operand 115 states and 144 transitions. Second operand 8 states. [2020-09-21 12:35:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:58,212 INFO L93 Difference]: Finished difference Result 238 states and 301 transitions. [2020-09-21 12:35:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:35:58,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-09-21 12:35:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:58,214 INFO L225 Difference]: With dead ends: 238 [2020-09-21 12:35:58,214 INFO L226 Difference]: Without dead ends: 186 [2020-09-21 12:35:58,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:35:58,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-21 12:35:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 140. [2020-09-21 12:35:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-21 12:35:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 178 transitions. [2020-09-21 12:35:58,225 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 178 transitions. Word has length 40 [2020-09-21 12:35:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:58,226 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 178 transitions. [2020-09-21 12:35:58,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:35:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 178 transitions. [2020-09-21 12:35:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 12:35:58,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:58,228 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:58,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:35:58,228 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:58,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:58,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-09-21 12:35:58,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:58,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383541741] [2020-09-21 12:35:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:58,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:58,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:58,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:35:58,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:35:58,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-09-21 12:35:58,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:35:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:35:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:35:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:58,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:58,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:58,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:58,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:35:58,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:35:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:58,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:58,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:58,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:58,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:35:58,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:35:58,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:58,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:35:58,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383541741] [2020-09-21 12:35:58,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:58,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:35:58,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971668710] [2020-09-21 12:35:58,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:35:58,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:58,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:35:58,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:35:58,932 INFO L87 Difference]: Start difference. First operand 140 states and 178 transitions. Second operand 9 states. [2020-09-21 12:35:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:59,376 INFO L93 Difference]: Finished difference Result 494 states and 648 transitions. [2020-09-21 12:35:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:35:59,376 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-21 12:35:59,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:59,378 INFO L225 Difference]: With dead ends: 494 [2020-09-21 12:35:59,378 INFO L226 Difference]: Without dead ends: 261 [2020-09-21 12:35:59,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:35:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-09-21 12:35:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 185. [2020-09-21 12:35:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-21 12:35:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 228 transitions. [2020-09-21 12:35:59,390 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 228 transitions. Word has length 45 [2020-09-21 12:35:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:59,391 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 228 transitions. [2020-09-21 12:35:59,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:35:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 228 transitions. [2020-09-21 12:35:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 12:35:59,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:59,393 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:59,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:35:59,393 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:59,394 INFO L82 PathProgramCache]: Analyzing trace with hash -2066975713, now seen corresponding path program 1 times [2020-09-21 12:35:59,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:59,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732216374] [2020-09-21 12:35:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:59,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:59,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:59,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:35:59,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-21 12:35:59,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:59,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:35:59,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:35:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-21 12:35:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:59,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:59,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:59,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:59,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:59,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:35:59,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:59,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:35:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:59,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:59,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:59,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:59,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:35:59,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:35:59,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:35:59,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732216374] [2020-09-21 12:35:59,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:59,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:35:59,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490444581] [2020-09-21 12:35:59,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:35:59,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:59,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:35:59,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:35:59,863 INFO L87 Difference]: Start difference. First operand 185 states and 228 transitions. Second operand 10 states. [2020-09-21 12:36:00,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:00,239 INFO L93 Difference]: Finished difference Result 270 states and 334 transitions. [2020-09-21 12:36:00,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:36:00,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-09-21 12:36:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:00,244 INFO L225 Difference]: With dead ends: 270 [2020-09-21 12:36:00,244 INFO L226 Difference]: Without dead ends: 268 [2020-09-21 12:36:00,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:36:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-21 12:36:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 179. [2020-09-21 12:36:00,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-21 12:36:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 221 transitions. [2020-09-21 12:36:00,261 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 221 transitions. Word has length 45 [2020-09-21 12:36:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:00,262 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 221 transitions. [2020-09-21 12:36:00,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:36:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 221 transitions. [2020-09-21 12:36:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 12:36:00,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:00,265 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:00,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:36:00,266 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:00,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:00,266 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-09-21 12:36:00,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:00,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172829975] [2020-09-21 12:36:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:00,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:00,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:36:00,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:00,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-21 12:36:00,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:36:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:36:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-21 12:36:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:00,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:00,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:36:00,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:36:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:00,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:00,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:00,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:00,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:36:00,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:36:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:00,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172829975] [2020-09-21 12:36:00,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:00,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:36:00,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950042252] [2020-09-21 12:36:00,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:36:00,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:00,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:36:00,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:36:00,812 INFO L87 Difference]: Start difference. First operand 179 states and 221 transitions. Second operand 11 states. [2020-09-21 12:36:01,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:01,465 INFO L93 Difference]: Finished difference Result 294 states and 370 transitions. [2020-09-21 12:36:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:36:01,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-09-21 12:36:01,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:01,468 INFO L225 Difference]: With dead ends: 294 [2020-09-21 12:36:01,470 INFO L226 Difference]: Without dead ends: 292 [2020-09-21 12:36:01,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:36:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-09-21 12:36:01,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 207. [2020-09-21 12:36:01,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-21 12:36:01,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 264 transitions. [2020-09-21 12:36:01,484 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 264 transitions. Word has length 45 [2020-09-21 12:36:01,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:01,484 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 264 transitions. [2020-09-21 12:36:01,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:36:01,484 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 264 transitions. [2020-09-21 12:36:01,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 12:36:01,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:01,485 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:01,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:36:01,486 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:01,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:01,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-09-21 12:36:01,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:01,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667590659] [2020-09-21 12:36:01,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:36:01,507 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:36:01,507 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:36:01,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:36:01,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:36:01 BoogieIcfgContainer [2020-09-21 12:36:01,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:36:01,545 INFO L168 Benchmark]: Toolchain (without parser) took 15738.99 ms. Allocated memory was 141.0 MB in the beginning and 355.5 MB in the end (delta: 214.4 MB). Free memory was 103.0 MB in the beginning and 315.1 MB in the end (delta: -212.1 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:01,550 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:36:01,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.24 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 179.2 MB in the end (delta: -76.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:01,552 INFO L168 Benchmark]: Boogie Preprocessor took 57.87 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 177.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:01,553 INFO L168 Benchmark]: RCFGBuilder took 541.48 ms. Allocated memory is still 202.9 MB. Free memory was 177.3 MB in the beginning and 149.3 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:01,555 INFO L168 Benchmark]: TraceAbstraction took 14612.89 ms. Allocated memory was 202.9 MB in the beginning and 355.5 MB in the end (delta: 152.6 MB). Free memory was 148.6 MB in the beginning and 315.1 MB in the end (delta: -166.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:36:01,568 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 517.24 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 179.2 MB in the end (delta: -76.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.87 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 177.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 541.48 ms. Allocated memory is still 202.9 MB. Free memory was 177.3 MB in the beginning and 149.3 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14612.89 ms. Allocated memory was 202.9 MB in the beginning and 355.5 MB in the end (delta: 152.6 MB). Free memory was 148.6 MB in the beginning and 315.1 MB in the end (delta: -166.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] char A [2 + 2 + 4 +1]; [L75] A[2 + 2 + 4] = 0 [L76] CALL parse_expression_list (A) [L48] int start=0, i=-1, j=-1; [L49] char str2[2]; [L50] COND FALSE !(!str) [L52] i++ [L53] str[i] [L54] case 0: [L69] EXPR str[i] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: [L69] EXPR str[i] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L56] EXPR str[start] [L56] COND FALSE !(str[start] == '"') [L57] j = i-1 [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L58] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L59] (0 < j) && (str[j] == '"') [L59] EXPR str[j] [L59] (0 < j) && (str[j] == '"') [L59] COND FALSE !((0 < j) && (str[j] == '"')) [L60] COND TRUE start<=j [L61] CALL r_strncpy(str2, str+start, j-start+1) [L30] return strncpy(dest,src,n); [L61] RET r_strncpy(str2, str+start, j-start+1) [L62] CALL __VERIFIER_assert(j - start + 1 < 2) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.4s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 499 SDtfs, 1026 SDslu, 1162 SDs, 0 SdLazy, 1723 SolverSat, 291 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 367 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 459 NumberOfCodeBlocks, 459 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 403 ConstructedInterpolants, 0 QuantifiedInterpolants, 38987 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 4/33 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...